';•;'■■: f v^ I ' I /■ *.> y- ^^s- THE EDINBURGH NEW PHILOSOPHICAL JOURNAL, EXHIBITING A VIEW OF THE PROGRESSIVE DISCOVERIES AND IMPROVEMENTS IN THE SCIENCES AND THE ARTS.''" CONDUCTED BY ^^^.^ .- ROBERT Jameson; REOIUS PROFESSOR OF NATURAL HISTORY, LECTURER ON MINERALOGY, AND KEEPER OF THE MUSEUM IN THE UNIVERSITY OF EDINBURGH J Fellow of the Royal Societies of London and Edinburgh; of the Antiquarian and Wemerian Societies of Edinburgh ; Honorary Member of the Royal Irish Academy, and of the Royal Dublin Society ; Fellow of the Linnean and Geological Societies of London ; Honorary Member of the Asiatic So- ciety of Calcutta ; of the Royal Geological Society of Cornwall, and of the Cambridge Philosophi- cal Society ; of the York, Bristol, Cambrian, Northern, and Cork Institutions ; of the Royal So- ciety of Sciences of Denmark ; of the Royal Academy of Sciences of Berlin ; of the Royal Academy of Naples ; of the Imperial Natural History Society of Moscow ; of the Imperial Pharmaceutical Society of Petersburgh ; of the Natural History Society of Wetterau ; of the Mineralogical Society of Jena ; of the Royal Mineralogical Society of Dresden ; of the Natural History Society of Paris ; of the Philomathic Society of Paris ; of the Natural History Society of Calvados ; of the Senken- berg Society of Natural History ; Honorary Member of the Literary and Philosophical Society of New York ; of the New York Historical Society ; of the American Antiquarian Society ; of the Academy of Natural Sciences of Philadelphia ; of the Lyceum of Natural History of New York, APRIL... OCTOBER 1827. TO BE CONTINUED QUARTERLY, EDINBURGH: PRINTED FOR ADAM BLACK, NORTH BRIDGE, EDINBURGH ; AND LONGMAN, RE^ES, ORME, BROWN, & GREEN, LONDON. 1827. %:M. P. Neill, Printer, Edinhirgh, CONTENTS Page Art. I. Biographical Memoir of Michel Adanson. Read to the Institute of France by Baron Cuvier, - ] II. Notes on the Rattlesnake (Crotalus horridus). In a Letter addressed to Thomas Stuart Traill, M. D. &c. By John J. Audubon, F. R. S. E. M. W. S. &c. Communicated by the Author, - » 21 III. On the Rein-deer. 1. Its Naturalization in Scotland. 2. Its Food. 3, Rein-deer Milk, and preparations made from it. 4. Speed of the Rein-deer. 5. Rein- deer eats the Lemming. 6. On the Furia inferna- lis, - - - - - - 30 IV. Account of a simple Apparatus for collecting the Gases evolved from Liquids submitted to Galvanic Action. By the Rev. Mr A. Robertson jun. Inver- keithing. Communicated by the Author, - 44 V. Account of an Ascent to the Crater of the Great Vol- cano of Kirauea. By the Rev. Charles Stewart, late Missionary at Hawaii, - - - 45 VI. Observations and Experiments on the different kinds of Coal. ByM. Karsten. (Continued from p. 296. of preceding volume), - - - go VII. On the substance called Fine Linen in the Sacred Writings. By the Rev. David Scot, M. D. M. W. S. &c. Communicated by the Author, - 71 VIII. Account of the Capture of a colossal Orang-Ou- tang in the Island of Sumatra, and Description of its Appearances. By Dr Clark Abel. (Concluded from p. 375. of preceding volume), - - 81 IX. Description of the Hindoo Bellows, with Remarks on the occurrence of a similar Bellows in Europe. By W. A. Cadell, Esq. F. R.S.L. & E., M.W.S. &c. Communicated by the Author, - - 84 ii CONTENTS. Art. X. Memoir regarding Symington and Bell's pretension* to be considered the original Inventors of Steam Navigation ; being an Appendix to a Narrative on the Introduction and Practice of Steam Navigation, &c. published in the Philosophical Journal for July 1825. By P. Miller, Esq. - - 87 XI. Observations on the Glaciers and Climate of Spitz- bergen, made during a visit to that Island ; with a Reply to Mr Scoresby's Remarks. By Thomas A. Latta, M, D., M. W. S. Communicated by the Author, - - - - ^ 91 XII. On the Paragrele or Protector from Hail. By John Murray, Esq. F.L.S. M.W.S. &c. Commimica- ted by the Author, - - - 103 XIII. Observations on the Structure and Nature of Flus- trae. By R. E. Grant, M. D. F. R. S. E. F. L. S. M. W. S. formerly Lecturer on Comparative Anato- my in Edinburgh. Communicated by the Author, 107 XIV. Some Remarks on the Temperature and Climate of Shetland. By William Scott, A. M. of the Royal Military College at Sandhurst. Communicated by the Author, - - - 118 XV. On the History and Constitution of Benefit or Friend- ly Societies. By Mr W. Fraser, Edinburgh, 122 1. Origin and Number of Friendly Societies in Britain, with their probable annual expenditure, - - 122 2. Do. do. of those in France, - - - 127 3. Legislative Enactments and Inquiries, - - 128 4. Imperfections of Friendly Society Schemes, - 133 XVI. On the Comparative Nutritive Properties of different kinds of Food, - - - 140 XVII. On an excellent mode of Coating small articles of Me- tal with Tin. By Thomas Gill, Esq. - ib. XVIII. On poishing Ivory, Bone, Horn, and Tortoise-shell. By Dr Thomas P. Jones, - . - 141 XIX. Abstracts and Remarks relative to Captain Sabine's Experiments on the Dip and Intensity of the Mag- netic Needle, in different parts of the Northern He- misphere. By Peter Barlow, F. R. S. Mem. Imp. Ac. Petrop. Communicated by the Author, 142 XX. Refutation of Mr Ivory's New Law of the Heat ex- tricated from Air by Condensation. By Mr Henry Meikle. Communicated by the Author, - 149 CONTENTS. m XXI. A Tour to the South of France and the Pyrenees, in 1825. By G. A. Walker Arnott, Esq. M.W.S. (Continued from the preceding Volume), - 157 XXII. Account of the interesting Works of Art lately dis- covered in the Ruins of Selinus by two English Architects, Messrs Harris and Angell. Commu- nicated by Dr Traill of Liverpool, - 165 XXIII. On the Magnetic Influence of the Heat produced by the Solar Rays, &c. By Mark Watt, Esq. M. W. S. Communicated by the Author, 170 XXIV. List of Rare Plants which have Flowered in the Royal Botanic Garden, Edinburgh, during the last three months; with Description of several new species. Communicated by Dr Graham, 174 XXV. Celestial Phenomena from July 1. to October 1. 1827, calculated for the Meridian of Edinburgh, Mean Time. By Mr George Innes, Aberdeen, 179 XXVI. Proceedings of the Wernerian Natural History Society, - - - « X81 XXVII. Scientific Intelligence. chemistry. 1. Brome in Salt Springs. 2. On the Taste of Arsenic. 3. On the Preservative Power of Arsenic over the Bodies of Persons poisoned with it. 4. Observations on Iron by M. Ant. Muller, (1.) Cast Iron; (2.) Pure Iron; (3.) Steel, - - - - , 183-6 mineralogy. 5. Optical Property of Dichroite. 6. Ilmenite of Siberia is Polygmite. 7, Scheererite, a new Mineral Species, 187-8 geology. 8. On the Coal-field of Brora in Sutherland. 9. On the Dis- tribution of Living and Fossil Plants, - 188-1 90 BOTANY. 10. Note on the Native Country of the Potato ; by Aylmer BouRKE Lambert, Esq. F.R.S. A.S.G.S, H.S, and M.R. A. S, Vice-President of the Linnean Society, &c. 11. Notice regarding the Double Cocoa-nut, - 192 iv CONTENTS. ZOOLOGY. 12. The Cock of the Woods (Tetrao urogallus). 13, Walking Match. 14. Trotting Match. 15. Cochineallnsect (Coc- cus Cacti. l6. Notice of the Habits and Characters of the Lemur tardigradus of Linnaeus ; Le Loris paresseux, ou, le Paresseux du Bengale of Cuvier. By W. Baird, Esq. - - - - - 195 NEW PUBLICATIONS. Illustrations of Zoology, being representations of New, Rare, or otherwise remarkable subjects of the Animal Kingdom, drawn and coloured after Nature, with Descriptive Let- ter-press. By James Wilson, Esq. F. R. S. E, Member of the Wernerian Society, - - - I99 Art, XXVIII. List of Patents granted in England, from 8th February to 19th May 1827, - 205 XXIX. List of Patents granted in Scotland from 21st March to 8th June 1827, - - 208 CONTENTS Page Art. I. Biographical Memoir of Dr Joseph Priestlev. Read to the Institute of France. By Baron Cuvier, 209 II. Facts in regard to the Hybernation of the Chimney Swallow (Hirundo rusticaj. By the Reverend Co- lin Smith of Inverary. In a Letter to Professor Jameson, , - - - 231 III. Thermometrical Observations, at Pitt-Town, New^ South Wales. By the Reverend John Macgarvie, A. M. Minister of the Scots Church, Portland Head. In a Letter to James Dunlop, Esq. Paramatta. (Communicated by Mr Dunlop), - - 234 IV. On the Materials which the Romans employed in their Buildings. By Mr C. T. Ramage, A. M. of Naples. Communicated by the Author, - 246 V. On the Covering of Birds, considered chiefly with re- ference to the description and distinction of Species, Genera, and Orders. By Mr W. Macgillivray, Assistant to the Regius Keeper of the Edinburgh College Museum, and Corresponding Member of the Wernerian Natural History Society. Commu- nicated by the Author, - - - 253 VI. On Isopyre, a new Mineral Species. By W. Hai- dinger, Esq. F. R. S. E. Communicated by the Author, - - - - - 263 VII. Chemical Examination of Isopyre. By Edward Tur- ner, M. D. F.R.S.E. Lecturer on Chemistry, Edin- burgh. Communicated by the Author, - 265 VIII. Biographical Notice of Count Lacepede, and account of his Work on the Natural History of Fishes, 267 IX. 1. On Osmelite, a New Mineral Species. 2. Descrip- tion of a new Species of Pyrites. 3. Mineralogical Examination of Russian Platina Sand. By Professor Breithaupt of Freyberg, - - 271 ii CONTENTS. Art. X. Chemical Examination of Tourmaline. By Professor C. G. Gmelin, - - . - - 274 XI. Chemical Examination of Russian Platina. By Ch. OssANN, Professor in Dorpat, - - 276 XII. On the History and Constitution of Benefit or Friend- ly Societies. By Mr W. Eraser, Edinburgh. Continued from p. 139- - - - 276 XIII. The Brain of the Common Dolphin, compared with that of Man. By M. F. Tiedeman, - 296 XIV. Of the Changes which Life has experienced on the Globe, - - - - - 298 XV. The Disasters of Tivoli, - - - 301 XVI. Essay on the Domestication of Mammiferous Ani- mals, with some introductory considerations on the various states in which we may study their actions. By M. Frederick Cuvier, - - 303 XVII. Experiments with Bottles sunk into the Sea, made during a Voyage from New South Wales. By Mr James Dunlop. In a Letter to Professor Jame- son, ----- 318 XVIII. Observations and Experiments on the different kinds of Coal. By M. Karsten. Continued from p. 71- 322 XIX. Observations on the Cow-tree of the Caraccas; and on the Culture of the Nutmeg-tree. In a Letter from Mr David Lockhart, Curator of the Botanical Garden in Trinidad to Aylmer Bourke Lambert, Esq. F.R.S. V.P.L.S. ; and Note by Mr D. Don, 335 XX. Observations on the Structure and Nature of Flus- trae. By R. E. Grant, M. D. F. R. S. E. F. L. S. M.W.S. Fellow of the Royal College of Physicians of Edinburgh, Professor of Zoology in the Uni- versity of London. (Continued from p, 118.), 337 XXI. Account of an Aurora Borealis, observed at Edin- burgh 1 6th January 1827; with some particulars of another, of a preceding year. With a Plate. By D.Blackader, Esq. Communicated by the Author, 34-2 XXTI. Overland Arctic Expedition, - - 347 XXIII. A Tour to the South of France and the Pyrenees, in 1 825. By G. A. Walker Arnott, Esq. F. R. S. E. F.L.S. M. W. S. (Continued from p. l64.), 350 XXIV. On the Theory of the Diurnal Variation of the Needle. By S. H. Christie, Esq. F. R. S. - 356 CONTENTS. iii Art. XXV. Account of Mr Crawford's Mission to Ava, 359 XXVI. Notice of a new Calceolaria, and of Nepenthes dis- tillatoria, mas., which have lately flowered in the Royal Botanic Garden, Edinburgh, Com- municated by Dr Graham, - - 371 XXVII. Celestial Phenomena from October 1. 1827 to Ja- nuary 1. J 828, calculated for the Meridian of Edinburgh, Mean Time. By Mr George Innes, Aberdeen, - - .. . 373 XXVIII. Scientific Intelligence. - meteorology. 1 . Squalls of Wind on the African Shore. 2. Sound heard at a great distance. 3. Method of reducing Barometrical Observations to a standard temperature. 4. Aurora seen in the day-time at Canonmills. 5. Aurora Borealis. 6. Meteor. 7. Luminous Cross in the Heavens. 8. Polar Lights in Siberia, - - - » 376-381 hydrography. 9. Water of the Dead Sea. 10, Analysis of the Water of the River Sagis in Siberia. 11. Dr Daubeny's Circular re- questing information in regard to Mineral Waters, 381, 382 geology. 12. Rule to be followed in examining Caves containing Fossil Animal Remains. 13. On Chains of European Moun- tains. 14. Death of Professor Brocchi. 15. Discovery of Fossil Mammalia in Auvergne. 1 6* TenerifFe Filter- ing Stone, - 382-384 mineralogy. 17* Hydrosilicite, a New Mineral Species. 18. Chrome in dif- ferent Minerals. I9. Fluoric and Muriatic Acids in Apatite. 20. Glaukolite, a new Mineral Species. 21. Ilmenite is Axotomous Iron-glance. 22. Apatite in Se- condary Trap and Trachyte. 23. Boracic Acid in Mica. 24. Curved Lamellar Heavy-Spar a new Species. 25. Fluoric Acid in Felspar, - - - » 385, 386 BOTANY. 26. Botany of the Dutch East India Possessions. 27- Com- mon Sugar existing in the form of grains in the flowers of Rhododendron ponticum. 28. On the Cotton of the Ancients. 29- Brick Tea, - . - . 386-388 iv CONTENTS. ZOOLOGY. 30. Asiatic Elephant. 31. Organization of the Camelopard. 23. On the Gossamer Web. 33. Identity of the two nominal species of the Ornithorynchus. 34. Glandular Apparatus lately discovered in Germany on the Abdo- men of the Ornithorynchus. 35. Remarkable Hybrid. 36, Microscopic Observations on Animal Tissues; by Dr HoDGKiN and J. J. Lister. 37. Camelopard. 38. Hirudo muricata. 39, The Elk, - - 388-392 ARTS. 40. Green Fire. 41. Object of Embalming in Egypt. 42. Lithographic Drawings uf the celebrated Masters of dif- ferent Schools. 43. On Mosaic Printing. 44. Fluid Telescopes, 393, 394 STATISTICS. 45. View of the Scientific and Literary State of different parts of Italy. 46. Number of Crimes in Prussia, 395, 396 NEW PUBLICATIONS. Illustrations of Zoology, being representations of New, Rare, or otherwise remarkable subjects of the Animal Kingdom, drawn and coloured after Nature, with Descriptive Let- ter-press. No. II. By James Wilson, Esq. F. R. S. E. Member of the Wernerian Natural History Society, 397 A Tabular and Proportional View of the Superior (Alluvial Tertiary Formations), Supermedial (Secondary Rocks), and Medial Rocks (partly Secondary and partly Transition Rocks). By Henry T. De la Beche, F.R.S. F.L.S. &c. 401 A Tabular View of Volcanic Phenomena, comprising a List of the Burning Mountains that have been noticed at any time since the commencement of historical records, or which appear to have existed at antecedent periods,* together with the dates of the respective Eruptions, and of the prin- cipal Earthquakes connected with them. By Charles Henry Daub en y, M. D. Professor of Chemistry in the University of Oxford, &c. . - - 402 Memoir on the Geology of Central France ; including the Vol- canic Formation of Auvergne, the Velay, and the Vivarais. By G. PouLETT ScROPE, F. R. S. M. G. S. &c. - 402 Art. XXIX. List of Patents granted in England, from 26th May to 15th August 1827, - - 403 XXX. List of Patents granted in Scotland from 14th June to 5th September 1827, - 405 THE EDINBURGH NEW PHILOSOPHICAL JOURNAL. Biographical Memoir of Michel Adanson. Read to the In- stitute of France. By Baron Cuvier. W HEN we appear at this tribunal, it is almost always for the purpose of presenting the picture of a life at once happy and useful. The men whom we praise have possessed the two- fold advantage of enlightening their fellows, and gaining their esteem and affection. Pubhc opinion loudly dictates to us their eulogy, and the certainty of having only the general sentiment of the friends of learning to express, supports us under the dis- trust which we entertain of our own powers. But it sometimes also happens, that we have to recal the attention to a man of merit too much neglected during his life, and to plead in favour of his memory against the indifference of his contemporaries. A motive not less powerful, then, animates us. Our functions, having become more difficult, only appear the more honourable and the more touching ; they assume, in some measure, in our eyes, the august character of a public magistracy, and we exer- cise them with all the warmth which a sacred duty inspires. The most unremittingly pursued labours, and the most fertile conceptions, have but too often received only this tardy justice ; and perhaps, by multiplying examples, we should only be in- creasing discouragements, if these examples did not, along with this unjust neglect, also present a preservative against its influ- ence, and a consolation under its inflictions, — I mean, if we did not see in them, at the same time, both the causes which pro- APRIL JULY 1827. A S Biographical Memoir of Michel Adanson. duce this neglect, and the enjoyments by which it is amply com- pensated. Both arise from the same principle. The man who is devoted to the discovery of truth, being too much satisfied with the ineffable charm attached to his research, does not suffi- ciently attend to the opinion of others ; and, in reality, it is al- most always his own indifference which causes that of his age, — an indifference which is certainly culpable, since it has the effect of defrauding genius of its noble destination. The historical eulogy of M. Adanson will afford evidence of all these truths, and will derive from them its principal interest. The various qualities of that learned and singular man, their origin and their effects, their agreement and opposition, their influence upon his labours and upon his fortune, will equally concur toward this object. Unbending courage and infinite patience, profound genius and offensive singularity, ardent de- sire of a speedy reputation, and misconception of the means which afford it ; lastly, calmness of mind in the midst of all sorts of privations and sufi'erings, — every thing during his long life deserves to be pondered, and will, in its turn, become a noble example for emulation, or a salutary admonition for the conduct. Michel Adanson,* member of the Institute, and of the Legion of Honour, foreign member of the Royal Society of London, ci-devant pensionary of the Academic des Sciences^ and royal censor, was born at Aix, in Provence, on the 7th of April 1727. He was of a Scotch family, which had attached itself to the fate of King James. His father, a servant of M. de Vintimille, archbishop of Aix, followed that prelate, when he was appointed to the archbishoprick of Paris, and took along with him to the capital, .the young Michel, then three years of age. M. Adanson, the father, had four other children also, and was not rich ; but the protection of the archbishop assisted him in their education. Each of them received a small benefice, and Michel Adanson, in particular, had, at the age of seven years, a canonicate at Champeaux en Brie, which served to defray his expences at the College of Plessis. • The correct orthography of the name, as the family was from Scotland, will be Adamson,mm''Ej}i'i. Biographical Memoir of Michel Adanson. 3 He possessed much vivacity of disposition, an imperturbable memory, and an ardent desire to distinguish himself; and no^ thing more was wanting to ensure his success at college, and make him appear to advantage at public exhibitions. The celebrated English author, Tuberville Needham, then re- nowned for the numerous and singular facts which his micro- scopes enabled him to discover, assisted one day at the public exercises of Plessis. Struck with the brilliant manner in which young Adanson executed them, he asked permission to add a microscope to the books which the scholar was to receive as a prize ; and in delivering it to him, said, with an air of solemnity, " You, who are so skilled in the works of man, are worthy also of knowing the works of nature " These words decided the profession of the child. They re- mained deeply engraven in the memory of M. Adanson, and he even repeated them with interest toward the close of his hfe. From this moment, his curiosity no longer changed its object. Having his eye attached, so to speak, to that astonishing instru- ment, he submitted to it all that the narrow limits of his college supplied him with, — all that he could collect in his walks, by steal- ing away from the paths prescribed to his companions, the small- est parts of mosses, and the minutest insects. He knew those productions which nature seems to have reserved for the curious eye of the philosopher, before those which she abandons to ge- neral inspection ; and his mind was already filled with those wonders of detail, while his soul had not as yet experienced the impression of the grand spectacle of the universe. Perhaps he never even felt those emotions at once so gentle and animating. He had no youth ; labour and meditation seized him from his childhood ; and during nearly seventy years, all his days, all his moments, were occupied with the laborious researches of a pro- fessed man of science. On leaving college, he was admitted into the cabinets of Reaumur and Bernard de Jussieu, where a rich harvest opened itself to his activity. He devoured it with a sort of fury. He passed whole days at the Jardin des Plantes. ^Not content with hearing the professors, he repeated their lessons to the other scholars; and he has been heard to observe, in a jocular way, of the present professors, that they were his pupils of the third generation. We have evidence from his manuscripts, that, at the 4 Biographical Memoij- of Michel Adanson, age of nineteen, he had already methodically described more than 4000 species of the three kingdoms. The mere manual operations which an undertaking like this would require, prove that he employed a part of his nights in it. This, no doubt, con- tributed much to his own improvement, but it did nothing for the advancement of science : most of these productions were already known and described in books. A climate but little frequented could alone furnish him abundantly with such as had never been seen or examined by naturalists. M. Adanson, urged by the ambition of placing himself, cost what it might, among those who have extended the limits of natural history, and, like most young students, only knowing for this purpose the easy way of multiplying descriptions of species, determined to travel. He resigned his benefice, and ha- ving obtained, by dint of importunities, and through the credit of MM. de Jussieu, a small post in the counting-houses of the African Company, he set out for Senegal on the 20th Decem- ber 1748. The motives which determined his choice are curious. " It was,'' he says in a note that was found among his papers, " be- cause this country was of all the European settlements the most difficult to penetrate, the hottest, the most unhealthy^ the most dangerous in all other respects, and consequently the least known by naturalists.'' The man who could be determined precisely by such reasons as these, would require to have no small degree of zeal. On the other hand, he would be less sensible than any other person to the difference between Paris and a desart. Con- stantly labouring eighteen hours in the day, he never reflected whether he was near or far from the enjoyments of the world. He appears, besides, to have always had a very strong constitu- tion. In his narrative, we see him, sometimes traversing sands heated to 60° of Reaumur, which converted his shoes into horn, and, by reflecting the light, made the skin of his face peel off"; at other times overwhelmed by those terrible hurricanes which oc- cur in the torrid zone, without his activity being ever for one mo- ment diminished. During the five years which he passed in this country, he de- scribed a prodigious number of new plants and animals, — drew a chart of the river, and subjected it to astronomical observa- Biographical Memoir of Michel Adanson. S kions, — compiled grammars and dictionaries of the languages spoken on its banks, — kept a register of meteorological observa- tions, made several times each day, — composed a detailed trea- tise comprehending all the useful plants of the country, — ^and collected all the objects of its commerce, together with the arms, dresses, and utensils of its inhabitants We have seen all these works in manuscript, and in his own possession ; and we were asto- nished that a man, single, and destitute of all assistance, could have accomplished them in so short a time. This short space, however, was still further occupied by general reflections of much greater importance, which became the principles of his other works, and which determined the progress of his ideas, and the character of the rest of his life. Let one represent to himself a man of twenty-one years of age, leaving, so to speak, the benches of the school, still in a great measure a stranger to all the intricacies of our sciences and systems, almost without books, and preserving only by re- collection the instructions of his masters ; let him imagine this per- son suddenly transported to a barbarous country, with a handful of fellow-countrymen, having no other connection with him than that of speaking the same language, and who either did not understand, or despised, his researches ; let him view this being, abandoned for several years to the most absolute solitariness, in a strange land, where the meteors, the vegetables, the animals, and the human beings, were different from those of ours. His views would necessarily have a peculiar direction, his ideas an original turn ; he would not creep along our beaten paths ; and if, moreover, nature had given him an assiduous mind, and a strong imagination, his conceptions would bear the impress of genius. But not having to make them pass into the minds of others, without adversaries to combat, or objections to refute, he would not hit upon the delicate art of convincing the under- standing without offending the self-love, of insensibly turning the habits into new paths, and counteracting the aversion of sloth by the commencement of a new labour. On the other hand, being always alone with himself, and having no object of comparison, taking every idea that occurred to him for a disco- very, never exposed to those little struggles of society which en- able a man to ascertain so soon the measure of his strength, he 6 BiogtnpMcal Memoir of Michel Adanson. would be inclined to form exaggerated ideas of his talents, and would not scruple to express them with freedom. What a young man like this would necessarily become, M. Adanson actually realised. Those who have known him must have observed in him whatever of good or of evil there is in the portrait ; and from this character once given, the fate of his works and of his person is almost necessarily deduced. On his return to Europe^ which happened on the 18th Fe- bruary 1754, with the rich store of facts and general views which he had amassed, he presently sought to assume the rank among naturalists which he fancied to belong to him. The state of natural history had undergone a remarkable change du- ring his absence. Reaumur was near the close of his life. His ingenious researches found but a feeble and less happily situated continuator in De Gheer. But Linnaeus and BuiFon began to pave the way to die empire which they divided between them for nearly half a century. The one, a man of a penetrating mind, of indefatigable application, grasping all the productions of nature, forced them, as it were, into arbitrary classification, precise, however, and easy to apprehend ; imposed upon them strange names, but invariable, and easily retained in the memo- ry ; described them in a dead language, but in brief and expres- sive words, and having a rigidly determined signification. The other, of an elevated imagination, grave and imposing in his style as in his manners, attaching himself to a smaller number of beings, neglecting those artificial scaffoldings which the study of more numerous productions would have required, exhausted, as it were, each of the subjects which he handled. He traced spirit- ed paintings of them The pomp and the majesty of nature reigned in their arrangement ; her brilliancy and freshness in their colouring. They were connected by new, bold, and some- times rash views, but always elucidated with an art that carried the mind away captive. T^e works of Linnaeus, containing in a small bulk an im- mense series of beings of all classes, were the manual of the learned ; those of Buffon, presenting in a suite of enchanting portraits a selection of the most interesting objects, formed the delight of the men of the world. But both of these authors, confining themselves almost exclusively to their own ideas, too Biographical Memoir of Michel Adanso7i. 7 much neglected an essential matter, — -the study of those multi- plied relations of beings whence arises their division into families, founded upon their peculiar nature ; and this was precisely what had formed the principal subject of M. Adanson's meditations in his solitude. He was the first who developed with energy their infinite im- portance, as well as made extensive application of them. The boldness of his march, and the precision ot his results, astonish- ed naturalists to such a degree that they thought for a moment they saw in him a worthy rival of these two great masters ; and perhaps there was only wanting, in order to his reputation ap- proaching theirs, an equally happy employment of accessory means, of which they knew so well to avail themselves. Let us at- tempt to trace a brief sketch, both of this subject in itself, and of the peculiar manner in which M. Adanson considered it. An organized being is a unique whole, an assemblage of parts which react upon one another to produce a common effect. None of its parts can therefore be essentially modified, without the others being at the same time sensible of the change. There is, therefore, only a certain number of possible combina- tions among the great modifications of the principal organs ; and under each of the higher combinations there is also only a cer- tain number of subordinate combinations of less important mo- difications, that can take place. Consequently, if we had an exact knowledge of all these combinations of different orders, and if each were arranged in the place determined by the organs which constitute it, we would also have a true representation of the whole system of or- ganized beings ; all their relations and properties might then be reduced to general propositions ; the ultimate and peculiar na- ture of each could be clearly demonstrated ; in a word, natural history would be an exact science. This is what is meant by the natural method ; it is the prin- cipal key of the mysteries of organization, the only thread that can guide us with certainty in this inextricable labyrinth of forms of hfe, and it is only by this method that the naturdist will one day be able to attain a height from which all nature will appear to him, in its aggregate and in its details, as one vast picture. But hitherto we have only been able to catch a 8 Biographical Memoir of' Michel Jdansofi. glimpse of some portions of this sublime picture ; and the point from which we might embrace the whole is still but a sort of ideal object, which we may perhaps never attain at all, although ft is our duty unremittingly to tend toward it, and although, by continued labour, we may every day approach nearer to it. The most direct method would be to determine the functions and influence of each organ, in order to calculate the effect of its modifications ; then, forming the great divisions according to the most important organs, and thus descending to the lower divisions, we should have a scale, which, although formed in advance, and almost independently of the observation of species, would nevertheless be the real expression of the order of nature. It is this principle which is named the subordination of the cha- racters. It is perfectly rational and philosophical ; but its ap- plication would suppose a degree of knowledge with regard to the nature, functions, and influence of organs, which, at the pe- riod when M. Adanson commenced his labours, was too far from being attained, even in approximation, to admit of being em- ployed ; and, perhaps, even the idea of it never presented itself to his mind. He, therefore, had recourse to a method the reverse of this, which may be called the empirical method, or that of experiment, founded upon the actual comparison of species ; and, in order to apply it, he devised a plan which is peculiar to himself, and which cannot but be regarded as highly ingenious. Consi- dering each organ separately, he formed of its different modifi- cations a system of division in which he arranged all the beings known. Repeating the same operation with relation to many organs, he thus constructed a number of systems, all artificial, and founded each upon a single organ arbitrarily chosen. It is evident that the beings which none of these systems would separate, would be very intimately allied, since they would resemble each other in all their organs. The affinity would be somewhat less in those which some systems would not assimilate in the same classes. Lastly, the most distant of all would be those which would not come together in any system. This method would, therefore, afford a precise estimate of the degree of affinity of beings, independent of the rational and physiolo^cal knowledge of the influence of their organs ; but it Biographical Memoir irf' Michel Adanson. % has the defect of supposing another sort of knowledge, which, though merely historical, is not less extensive nor less difficult to acquire, namely, that of all the species, and of all the organs of each species. The neglect of a single organ may lead to the most erroneous results ; and M. Adanson himself, notwithstand- ing the immense number of his observations, furnishes some ex- amples of false relations thus introduced. This is what he called his universal method^ and it is also the leading idea which predominates in all iiis works, printed or in ^lanuscript. He published in 1757 a sort of trial of it in the Traite des Coquillages^ which terminates his first volume of his Voyage au Senegal. This opened to him, when only thirty years of age, the gates of the Academic des Sciences, and of the Royal So- ciety of London, not because he had gone to seek some shells on the coast of Africa, but because he announced himself as a man of genius, full of new views, of great activity, and capable of doing still higher honour to these illustrious societies by many similar undertakings. The work, in fact, was such as might rationally enough ex- cite these hopes, and its author deserved these marks of regard, especially from the attention which he had bestowed upon the animals of shells, which before his time had been entirely ne- glected^ and some of which have not even yet been described. His methodical distribution, founded upon a score of those par- tial systems of which we have already given an idea, was much superior to all those of his predecessors. Nevertheless there still remained some defects in it, for a reason which we have already hinted at, namely, because, from the want of anato- mical dissections, he could not have become acquainted with the internal organs, and especially the heart. This omission made him even err in the general description of the class, in which he does not comprehend the moUusca which are desti- tute of shells. His project at first was to treat in this manner, in eight vo- lumes, the whole history of Senegal, and^ in fact, a great por^ tion of it is completed in his manuscripts ; but judging that the utility of his method would be better perceived by a more general application, he soon ceased to publish this first work, in order to 10 Biographical Memoir of Michel Jdanson. devote himself entirely to another, on the Families of Plants, which he had printed in 1763. He also here found the advan- tage of operating upon more numerous beings, of examining them in more points of view, and for which the empirical method is more excusable, because the functions of their organs are more obscure. Many botanists had already perceived the importance of dis- tributing plants according to their natural relations. In the latter end of the seventeenth century, Morison, Magnol, and Ray, had, almost at the same time, conceived the idea of such a distribution, but without devising very proper means for ac- complishing it. Haller, long had this object in view, but had not the good fortune to be able to make the natural relations entirely agree with an absolute system ; and, notwithstanding all his care, that which he adopted still broke through some of those relations. Linnaeus voluntarily renounced it in forming his System, and was only sometimes led to it by the force of analogy, which constrained him to break loose from the rules which he had prescribed to himself. In a word, of all the botanists that preceded M. Adanson, the only one who had never abandoned the inquiry, and who had been most successful in his investigations, and who even de- served to be considered, in this respect, as the master of his con- temporaries and successors, was Bernard de Jussieu. That ex- traordinary man, who combined virtues and a modesty worthy of the first ages, with an extent of knowledge which scarcely any age has surpassed, was occupied with it during the whole of his life ; but, always dissatisfied with what he had done, because he saw better than any one what remained for him to do, he did not commit his results to writing ; and they were only known by the arrangement which he introduced in 1758, in the garden of Trianon, and by the fragments which his friends or his disciples published. There are strong reasons for thinking that Linnaeus had profited by the conversation of Bernard de Jussieu on this subject ; for several of the associations indicated in his Ordines Naturales, published in 1753, under the form of a mere list without explanations, would with difficulty have arisen from the views which directed that celebrated naturalist in his other works. 2 Biographical Memoir of Michel Adanson. 11 It has also been thought that M. Adanson, who was a pupil of Bernard de Jussieu, had gathered from the lessons of his mas- ter, the first germs of some of his families. But, were even this conjecture well founded, his fame would lose little by the cir- cumstance. If he profited by these lessons, it was as a man of genius that he did so. The general plan of his book, — the di- rect principles which he established, — his free and bold march, are all his own, and present no indications of any thing borrow- ed. The very existence of some errors which Bernard de Jus- sieu had avoided, proves the originality of M. Adanson's work. These errors always arise from the same cause, namely, the neglect ol some important organ ; nor j^et were they owing to his having established his distributions upon too small a number of partial systems, for he commenced with making sixty-five of these sys- tems, founded upon so many different considerations ; but they owed their existence, as we have already insinuated, from want of having rightly comprehended the fecund principle of the sub- ordination of characters. These errors, however, are but few, because a delicate tact often supplied what method alone could not have given him, and the work presents in requital a mul- titude of happy views, which more recent discoveries have only confirmed. M. Adanson, for example, pointed out the perisperm, and its importance for characterising the families, although he did not give it any name. He formed the family of Hepaticoe, and confined that of the Joubarhes within proper limits. He was the first who perceived the affinity of the CampanulacecB to the Composite^ ; the connection of the Aristolochia with the Eleag- neoe ; of the Menyantha. with the Gentians ; and that of the Trapa with the Onagnz ; of which Bernard de Jussieu was ig- norant, and which have since been recognised. His divisions of Liliacece, Dipsacea and Composit^e are original and good. His groups of Fungi are superior to those of Linnaeus. He sepa- rated with reason the Thymelcece from the EleagnecBy and the Nyctaginem from the AmaranthacecE, which Bernard de Jus- sieu had confounded. Lastly, a very great number of his genera have been approved of and adopted by the latest botanists. In his preface, M. Adanson, gives a historical account of the science, which displays an astonishing erudition, when we consider 1^ Biographical Memoir of' Michel Adansdii. that he had been almost always occupied in observing. He men- tions, with accuracy, how many plants, figures, and new ideas each author had added to the general stock. He even gives a sort of scale of the merit of the various systems that had appeared ; but it is only according to their more or less perfect agreement with his natural families, that he assigns to them any precedency. This was putting himself at the head of all the botanists ; and, in fact, he was not far from having such an opinion of himself. He did not conceal in particular the sort of envy inspired in him by the celebrity of the Sexual System of Linnaeus, one of the most opposite to the natural relations of vegetables. The hope of seeing it quickly fall into disrepute indeed consoled him for a time; but in this he only shewed to what degree he was unac- quainted with men, while it was upon his intimate knowledge of them that Linnaeus founded almost all his success. Amiable, benevolent, surrounded by young enthusiasts, whom he trained to become so many scientific missionaries; careful to enrich his successive editions by their discoveries ; fa> voured by the great, connected by an active correspondence with the learned, anxious to make his science appear easy, ra- ther than to render it solid and profound, the Swedish natu- ralist daily saw his doctrine extend, in defiance of the resistance opposed to it by the pride of individuals, and by national preju- dices. Adanson, on the contrary, retaining his solitary habits, inac- cessible in his cabinet, without pupils, almost without friends, holding intercourse with the world only through the medium of his works, seemed to invest these works purposely with repul- sive difficulties, as if he dreaded their too general diffusion. Instead of the simple and convenient nomenclature contrived by Linnaeus, he gave arbitrary names to the different beings, which no etymological relation fixed in the memory, and even sometimes disdained to indicate their accordance with the names employed by others. He even invented an orthography of his own, which made his French look like some unknown jargon. This he said was to represent the pronunciation bet- ter. But, in order to have the pronunciation represented, it would require first to be fixed; and how could a sound be fixed of which no traces remain ? The pronunciation is also perpe- Biographical Memoir of Michel Adanson. IS tually changing ; and it is upon the orthography alone that the duration and extent of a language repose. To prove this, let us ask what, for example, would have become of the Latin, had each nation thought proper to write that language in the man- ner in which it pronounced it ? Thus, notwithstanding the real and acknowledged beauty of the plan which he followed, and the great number of facts which he discovered, notwithstanding the praises which his work re- ceived from the most learned naturalists, M. Adanson was far from obtaining that influence over the progress of science to which he was certainly entitled, and the artificial systems still reigned almost exclusively for more than thirty years. But, far from being repelled by this want of success, he scarcely took notice of it. Then, as during the rest of his life, his own opi- nion sufficed to satisfy him ; and always labouring with the same ardour, his families of plants were not entirely printed, when he was already engaged in an infinitely more general work. The boldest imagination would recoil on reading the plan which he submitted, in 1774, to the judgment of the Acade- mic des Sciences, and still more on seeing the enormous heap of materials which he had actually collected. His object was now no longer to apply his universal method to one class only, to one kingdom, or even to what are commonly called the three kingdoms, but to embrace the whole compass of nature, in the most extended signification of the word. The waters, the me- teors, the stars, the objects of chemical science, even the facul- ties of the mind, and the creations of human ingenuity, all that commonly forms the subject of metaphysics, moral philosophy, and politics, all the arts from agriculture to dancing, were to be treated of in this gigantic undertaking. The very numbers were frightful. Twenty-seven large vo- lumes exposed the general relations of all these subjects, and the distribution of their various objects. The history of 40,000 species was arranged in alphabetical order in 150 volumes. A universal vocabulary gave the explanation of 200,000 words. The whole was accompanied by a great number of particular treatises and memoirs, by 40,000 figures, and 30,000 fragments of the three kingdoms. Every one put the question to himself, how a single individual 14 Biographical Memoir of Michel Jdanscn. could have even embraced, not to say entered into, the minute investigation, of so many different objects, and what treasures would suffice for their publication. In fact, the commissioners of the Academy found the execu- tion very unequal. The parts foreign to natural history were reduced to mere indications ; two-thirds of the figures were en- graved or sketched in works well known ; many of the volumes were swelled with materials which still required to be digested. The commissioners, therefore, gave M. Adanson the very wise advice, to detach from this vast mass the objects of his own pe- culiar discoveries, and to publish them separately, contenting himself with pointing out in a general manner, the new relations which he might perceive between them and other beings. The sciences will long have to regret that he refused to fol- low this advice ; for various memoirs, indej)endent of his great works, shew that he was possessed of much sagacity in the exa- mination of particular objects. We shall now present a short analysis of his principal writings. The Teredo, the shell which bores vessels and piles, and which has menaced the very existence of Holland, had been examined by several authors. M. Adanson was, however, the first who made known its true nature, and its analogy with the pholas and bivalves. The description which he gives of it is a model of its kind* : and similar praise is due to his descrip- tion of the Baobab f. This is a tree of Senegal, the largest in the world, for its trunk is sometimes 24 feet in diameter, and its height from 120 to 150. The name of Adansonia was given it, after that of the botanist who had so well described it, and Linnaeus generously retained this name, notwithstanding all the reasons which he had to complain of the person from whom it was derived. The history of the gum trees |, and the numerous articles which M. Adanson inserted in the Supplement of the first Encyclopaedia, unite, along with a great many new facts, much erudition and precision. They shew, by the fact, that our lan- guage is capable of expressing with clearness all the forms of • Memoires de T Academic for 1759. f Ibid. 1761. X Memoires de TAcademie, 1773 and 1779. Biographical Memoir of Michel Adanson. 15 plants, without having recourse to the barbarous terminology which then began to be introduced, and which is unnecessarily repulsive in so many modern works. Unfortunately these arti- cles were not continued farther than the letter C. It is not known what prevented the printing of the remaining part, which was prepared. One of the most interesting questions of natural history is that of the origin of the different varieties of our cultivated plants. M. Adanson made many experiments upon those of corn, and saw two arise in the barley species ; but they have not been propagated for a long time *. Some naturahsts, carry- ing the consequences of these facts, and others of a like na- ture, too far, and maintaining that there is nothing constant m the species, alleging even examples which seemed to prove that new species are formed from time to time, he shewed that these pretended species were, for the most part, nothing else than monstrosities, which quickly returned to their original form -f*. For a long time, the motions of the leaves of the sensitive plant, and of th'^ stamina of some plants, had been compared to those of certain animals, although the former, for the most part, required to be excited by an external cause. M. Adan- son discovered spontaneous movements in a green fibrous sub- stance, living at the bottom of water, and which he supposed to be a plant. He gave a very accurate history of it |, and plac- ed it at the head of his system of vegetables. M. Vaucher has since considered it as a zoophyte, and named it Oscillatoria Adansonii. It was M. Adanson who first discovered that the benumbing faculty of certain fishes depends upon electricity. He made his experiments upon the Silurus electricus §. It has also been as- serted, that he was the author of the letter on the electricity of the tourmaline, which bears the name of the Duke de Noya Caraffa ||. He had, therefore, contributed in two important points to the progress of this branch of natural philosophy. He must, indeed, have been well acquainted with that science, as is • Memoires de 1' Academic, 1769. f Ibid. 1769. X Ibid. 1767. § Voyage au Senegal, p. 134. II Paris 1759, See Le Joyand Notice sur Adanson, p. 12. 16 Biographical Memoi7^ of Michel Adanson obvious from the details which he has borrowed from it in his Treatise on Vegetable Physiology and Agriculture. He also entered into a long investigation on the unequal expansion of thermometers filled with different fluids. Nor did he neglect the application of natural history or physics to the useful arts. He first discovered the means of extracting a good blue fecula from the indigo of Senegal. In a memoir addressed to the ministry, he shewed that this colony would be very favourable to all the productions of our islands, and even to those of India, and that it would be easy to have them cultivated there by free negroes, a happy idea, and the only one capable of putting an end to a commerce so disgraceful to humanity. A society of English and Swedes, animated by a religious senti- ment, made a trial of this plan some years ago, and we are even assured that the establishment still exists, although part of it has been destroyed by pirates. Should it ever happen that the consequences of the last revolutions, and the present state of the sugar islands, should at length induce the European govern- ments to proscribe a system at once so cruel for the slaves, and so dangerous for the masters, it would be but justice to remem- ber that M. Adanson was one of the first who made known the means of supplanting it, without losing any thing of our enjoy- ments. Although neither the ministry of France, nor the Afri- can Company, paid any attention to this memoir, M. Adanson refused, from patriotic motives, to communicate it to the En- glish, who had offered him a considerable recompence. These various morsels, all interesting, might have been fol- lowed by many others, had M. Adanson been so inclined. His travels, his cabinet, and his "continual observations, would have furnished him with sufficient materials for such a purpose. BuiFon made known several African quadrupeds and birds, which were communicated to him by Adanson. M. Geoffroi de St Hilaire, who described the galago, a very extraordinary species of the family of quadrumana, apprises us that M. Adan- son had long been in possession of it. We are assured that he had the Ethiopian boar long before AUamand and Pallas described it ; and his numerous fortfolios are still full of similar subjects. But all these treasures, and, however melancholy the reflection, M. Adanson himself, were lost to science and society, from the Biographical Memoir of' Michel Adanson. 17 moment that he entirely devoted himself to the execution of the gigantic plan of which we have spoken. Had M. Adanson been an ordinary man, we should terminate his euWium here : his errors would have afforded no instruc- o tion ; but it is precisely because he had a true genius, and be- cause his discoveries place him in the first ranks of those who have benefited science, that it becomes our duty to dwell a little upon this latter and painful part of his history. The principal utility of those honours which we render to men of science is to excite the youthful mind to march in their traces ; but the en- couragement thus held forth would often prove fatal, if, dispen- sing praise without discernment, we did not also point out the false routes into which some of these celebrated men have had the misfortune to wander. From the moment, therefore, that M. Adanson devoted him- self to his great work, he reserved whatever particular facts he had, in order to give it more interest, and was no longer willing to publish any thing separately. Dreading to lose the smallest portion of time, he separated himself more than ever from the world, diminished the hours of his sleep, and abridged the time allotted to his repasts. When, by some chance, one was allow- ed to penetrate to him, he found him buried in the midst of in- numerable papers, which covered every part of the room, com- paring and arranging them in a thousand ways. The unequi- vocal marks of impatience which he exhibited, prevented his be- ing interrupted a second time. He even found means of avoid- ing first visits, by withdrawing himself into a small isolated house in a remote quarter. Henceforth his ideas were no longer fed or improved by those of any other. His genius now wrought upon its own founda- tions only, and these foundations underwent no further renova- tion. All those feelings of self estimation which his solitary ha- bits had engendered in his mind were now fully developed. Cal- culating the extent of his powers by that of his projects, he placed himself as far above other philosophers, as the work at which he laboured, appeared to him superior to those which they had left. He has been heard to say that Aristotle alone approached him, but still at a great distance, and that all other naturahsts re- mained very far behind. Forgetting that his method essentially APRIL JULY 1827. B 18 Biographical Memoir of Michel Adanson. rests upon acquired facts only, he attributed to it an innate vir-- tue, which enabled him to foresee them, and to describe un- known species in advance. " I possess," he said, " all the great routes of science ; what need have I of bye-roads ?"'"' The most profound contempt for the labours of his predecessors, the abso- lute neglect "of modern discoveries, even of objects brought home by travellers, the most obstinate attachment to his old ideas, and complete ignorance of their most decisive refutations; lastly, the utter uselessness of efforts so protracted, so laborious, but so erro- neously directed : — Such were the features of his mind, and the character of his labours. For example, although he was writing on mosses, he did not know, in 1800, the existence of Hedvvig, nor any of the discoveries published upwards of twenty years be- fore, regarding this singular class. Those who possessed his confidence were so much the more unwilling to interfere with his peculiar habits, that, while they lamented his eccentricities, they could not but love him. In fact, if a prolonged solitude had given an unfortunate direction to his mind, that fatal suspicion which retirement so often pro- duces, and which has disturbed the repose of so many secluded men, never penetrated to his heart. His manners, always lively^ were also uniformly benevolent. He entertained extravagant ideas of himself, but he did not doubt that every body had the same ; and in the midst of the most cruel privations of his old age, he was never heard to accuse others. It must be owned, however, that he had moments when he might with propriety have done so. His principal fortune con- sisted of two moderate pensions, the reward of his labours in Sene- gal, and of the objects which he had given up to the Royal Cabinet. The rigorous measures of the Constitutional Assembly deprived him of both, and his seclusion left him no means of recovering them. The pension of the Academy alone remained. That society was still a point of contact with the world. Nor would it have ceased to watch over his fate, had it not soon fallen also amid the general ruin : a decree of the Con- vention suppressed it, and dispersed its members. Those men, whose illustrious names filled Europe, were happy in having re- mained unknown to the ferocious tyrants of their country. They fled to seek in the most obscure asylums some shelter from the Biographical Memoir of' Michel Adanson. 19 terrible sword continually suspended over all that had possessed celebrity, and which, perhaps, would have spared none of them, had not the ministers of its fury been as ignorant as they were cruel. At this period when the most opulent suffered the loss of every thing, it may easily be imagined what must have been the state of an old man of seventy, already infirm, whom twenty years of sedentary labour had left bereft of every relation, and had shut out from all knowledge of men and the world. I have not courage enough to retrace so afflicting a picture. Would that I had the power to paint his admirable patience, and that invincible ardour for study, which survived unimpaired, amid the most calamitous circumstances ! It seemed that he was himself ignorant of his misfortunes. So long as he could meditate and write, he lost nothing of his serenity. It was an affecting spectacle to see this poor old man bent near his fire, sitting in the light of an expiring ember, attempting with a feeble hand still to scrawl a few letters, and forgetting all the difficulties of life, when a new idea, like the visit of a gentle and beneficent spirit, came over his imagination. Without doubt the love of fortune is not the motive which induces men to devote themselves to science, nor is it worthy of such influence ; glory itself presents but an uncertain prospect : but who could resist the intrinsic charm of science itself, and that pure happiness, independent of men and of fortune, of which the history of the learned continually presents such as- tonishing examples ? A milder day, however, dawned upon France. The Conven- tion, delivered from its oppressors, abjured their barbarities : and one of the last acts of its power was the re-establishment of the Academies, by uniting them into a single body, under the name of the Institute. At the signal of authority, and after four years of dispersion, those illustrious men every where issued from the obscurity of their retreats, and assembled themselves anew. Their first meeting presented a scene never to be effaced from the mind : their tears of joy and congratulation, the eagerness of theirmutual inquiries re- specting their misfortunes, their retreats, their occupations ; the mournful recollections of so many associates who had fallen vic- 1 B 2 20 Biographical Memoir of Michel Adanson. tims to the rage of their executioners ; and the soft emotions of those who, still young, and called for the first time to sit with those whose genius they had long before been taught to revere, learned also, by this melting spectacle, to become acquainted with their heart. The restless eye of friendship, however, still sought for some whom it had been accustomed to greet, and in this number was Adanson. It was then only that the privations which caused his absence were learned. His retreat at last disclosed itself to the eager search of his companions. He received them with tears of renewed affection. Astonished, perhaps, no less than affected at our interest in his welfare, he no doubt regretted that in re- nouncing the enjoyments of the world^ he had also comprised those of the heart among his sacrifices. Science, my friends, requires not this : The futile praises of vanity, the deceitful favours of fortune, these are what she im- periously restrains us from pursuing ; and, without doubt, you will not find her restrictions in this respect very grievous. Per- haps she also requires us to sacrifice the little praises of the world to true glory, of which society at large is rarely worthy of being judge. But I do not hesitate to declare to you all, that mutual intercourse and esteem only render more agreeable the bonds which unite men of enlightened minds ; and that friendship is the only enjoyment which this noble elite of huma- nity will not renounce, even for the certainty of one day obtain- ing honours such as these.'^ A just gratitude obliges us to add that, from the moment when the Government was informed of M. Adanson's condition, every succeeding minister made it a duty to shew, by his exam- ple, that the state does not abandon the old age of those who have devoted their life to the public good. Sovereign munifi- cence itself did not disdain to soften his last moments. But all these benevolent cares were unable to arrest the ef- fects of age, and those aggravated infirmities which pressed so heavily upon him during the four last years of his hfe ; and if we still had the pleasure of seeing M. Adanson occasionally at our meetings, we had not that of seeing him take an active part in our common labours. He supported his afflictions as he had supported his poverty. Mr Audubon's Notes on the Hattlesnakc. SI Although several months a prey to the most excruciatiHg pains, his bones softened by disease, and a thighbone fractured in con- sequence of caries, he was never heard to utter a cry. The fate of his works was the sole object of his solicitude. Death put a pe- riod to his painful existence, on the 3d of August 1806. He directed by his will, that a garland of flowers, made up from the fifty-eight families which he had estabhshed, should be the only decoration of his coffin — a frail but affecting image of the more lasting monument which he has himself created. Some friend of science, we trust, will not be wanting, soon to raise him another, by speedily rendering public all that his immense collections still contain of new and useful informa- tion. Notes on the Rattlesnake (Crotalus horridus) ; in u Letter ad- dressed to Thomas Stuart Traill, M. D. S^c. By John James Audubon, F. R. S. E. M. W. S. &c *. Communicat- ed by the Author. JL HE power of fascination gratuitously ascribed to most snakes by theoretical naturalists, has so long rivetted the atten- tion of all persons incHned to think on the subject, but without the means of judging for themselves, that the following fruits of many years'* observation, in countries where snakes abound, will not, I hope, though adverse to the supposed power of fasci- nating, be looked upon as destitute of interest. Rattlesnakes in particular, appear to have acquired their chief fame from this supposed charm. I shall, therefore, draw your attention more directly to the habits of that species, and begin by enumerating the many real and extraordinary facul- ties bestowed upon it. These consist in swiftness ; in pow- ers of extension and diminution of almost all their parts ; in quickness of sight; in being amphibious; in possessing that wonderful and extraordinary benefit of torpidity during win- ter ; and long continued abstinence at other periods, without, however, in the mean time losing the venomous faculty, the prin- • Read before the Werncrian Natural History Society, 24-i Sa- cs O CO t-i O 00 O (N o U lO CO © © © © ^ 00 ri O CD «5, © O q ^ lO CO 1 li B ^ « CO co- co 05"^ © © CO (N CO ©1 ir^ t* O CO (M t^ «0 CO t>» lO CO l>» © CO CO J TO r» c c § eS r t-i M CO ^ • ;3 O O ,_i ^ « =i C'oj ,_, 1/3 5 pq ®P^ o fl o o o CO rt 5J bo ^ O O O O t3 -^ O «M p^ o c^i5 §l| ^" ^t^cj ' .S .5 <" CO In 1801, Symington, whom mj father always considered in the same light as he did every other labourer or tradesman he employed about his different ves- sels, took out letters-patent for the invention, — a proceeding of which my father was not aware till a considerable time after- wards, and which excited his warmest indignation. Such being Symington's pretensions, he comes forward in the year 1824, long after steam-vessels had been erected by others, and successfully used upon the river Clyde, and claims from the Glasgow Steam- Boat Owners, a remuneration for the invasion of his patent-right. " Being unable," as he says in his memorial, " to extort any thing from them by the effects of law," he resolved " to put his great confidence for relief in the muni- ficence of his country, the liberality of the proprietors of steam- vessels, and the feelings of others well affected to navigation by the power of steam." Mr Miller on the Original Inventors qfStemn Navigation. 89 After this declaration, is it possible for Symington to pre- tend to any privilege or right of invention from his letters-pa- tent? They were surreptitiously obtained many years after my father had made the discovery known to all the world, thereby rendering his letters-patent of no avail. The other person whose pretensions I find it incumbent on me to refute, is Henry Bell at Helensburgh. In a late petition to Parliament, praying for some provision in his old age, that person sets forth, " That, in the year 1789, when only 23 years of age, he commenced experiments with the view of propelling vessels by the power of steam ; that he pur- sued these experiments for 10 years, and was the first person in this country, who brought into practice the power of steam in propelling vessels against wind and tide. He calls this inven- tion his own, and complains that others with larger capital had adopted the invention, and were bringing ruin on his head."" * It may be true that Bell was the first person in this country who attempted to turn steam navigation to a profitable use, by building the " Comef steam-vessel, and bringing her to ply upon the river Clyde in the year 1811, for the conveyance of goods and passengers. But while I admit this, and in so far as it can be considered a merit, I have no wish to injure him; common justice, however, to the memory of my late father seems to re- quire that I should state the facts as they really are. I have already noticed that my father was the first person who introduced the practical use of steam navigation, and that Symington-j- was the mechanic employed by him in constructing • 1789 was the very year in which the success of my father's experi- merits were rery generally reported by the public press, and from which the young, but inventive, genius of Henry Bell, derived no doubt much assist- ance at its origin, and in its growth ; and which was likewise much and ra- pidly improved by frequent inspection of my father's steam-vessel at Carron in 1789, as Symington states. So much for steam-navigation being his invent tion, as he is pleased to call it. t My father often regretted to me having yielded to Mr Taylor's recom- mendation of Symington, in place of having employed Messrs Watt and Bol- ton for his engines, and to have availed himself of Messrs Taylor's very com- petent knowledge in mechanics, to have, applied them to the wheels of his vessels. After the violent disgust he received from Symington's conduct at Car- ron, he used not unfrequently to reproach Mr Taylor rather smartly, for hav- ing ever thought of bringing such a person about him. This circumstance, 90 Mr Miller on the Original Inventors of' Steam Navigation. and putting on board his double boat the first steam-engine ever used for propelling a vessel : that this took place in the year 1788. At that time Henry Bell, who was originally bred a stone-mason, was working with Mr James Inglis, engineer, at Bellshill, and af- terwards as an engineer superintending some public works in Glasgow; and having been applied to by Mr Fulton from America, for drawings of some of the machinery used in this country, *' that gentleman," as Mr Bell says in a letter signed by himself, and published in the Caledonian Mercury on 28th October 1816, " begged me (Bell) to call on Mr Miller of Dalswinton and see how he had succeeded in his steam-boat plan, and if it answered the end I was to send him a full draw- ing and description of it, along with my other machinery. This led me to have a conversation with the late Mr Miller, and he gave me every information I could wish for at the time," he. ; and he adds, " Two years thereafter {i. e. in 1801), I had a let- ter from Mr Fulton, letting me know that he had constructed a steam-boat from the different drawings of machinery I had sent him, which was likely to answer the end, but required some im- provements on it." InJ1824, Bell gave a further account of his connection with Mr Fulton, in a letter addressed by him to John Macneill, Esq. of Glasgow, of which the following is a literal copy. It will not be overlooked, that, in this account of his scientific correspondence with the American engineer, he makes no allusion to his inter- course with my father. *' Mr John McNeill Helensburgh 1st March 1924 *' Sir — 1 this morning was fevered with your letter and in ansur to your Inqueres anent the leat Mr Robert Fulton the Amerecan ingenair his ather was from Areshair but what plass or famlay I canut tell but his self as much as any thing else, contributed to check the progress of steam-naviga- tion ,in this country, from its introduction in 1788-9 till 1811, by damping my father's ardour at the time he had resolved to build another vessel suffi- ciently strong to undertake a sea voyage, and to support the weight of the engine in which he proposed to have embarked at Leith for London ; and thus at once to have made it manifest that steam was as applicable to coast- ing as inland navigation. Such, however, was his bad fortune ; and both Mr Taylor and he lived long to repent afterwards, the one for having given, and the other for having attended to, the recommendation ; but my father always felt stxongly disposed to encourage and support genius, when he found it struggling with poverty ; and not unfrequently had he to regret his mistaken kindness. Observations on the Glaciers and Cli7ncUe qf'Sjjitzbergen, 91 was born in Amereca He was different times in this contray and staped with me for some tune but he published a tritiez on Canal Declining Rail- roads acctuards I have not his boock but you will finde it in Mr Taylor Stashner London it is 2l8 He published it in this contray in 1804 I think for in the letter end of the year 1 803 he on his way to Frans called on me and in his return in 1804 He was brought up in the line of a painter and was the best hande sceatcher and lick ways a good mineter painter He was not brought up as a ingenair,but he was employed to come to this contray to take drayings of our cattin and other meshineray that leaid him in to become en sivel ingenar and was quick in his uptake of any thing When I wrate to the Amerecan goverment the grate yauility that steam navigation wold be to them on their rivers they apointed Mr R Fulton to corspond with me so in that way the Amerecans gatt their first insight from your humbel ser- vent HENERY BELL" Boats on Mr Fulton's construction were very soon afterwards brought into general use in the United States of America ; but it was not till twelve years after my father had employed steam in propelling the two boats erected by him, and after he had given public intimation of the invention to every court in Eu- rope, that any of Mr Fulton's steam-vessels appeared ; and not till the year 1811, being ten years after the introduction of them into the United States, that Bell built his vessel called the " Comef' to ply upon the River Clyde, and which was soon afterwards followed by many others. What I have now stated has been extracted from, and is sup- ported by, the writings and memorials of Messrs Symington and Bell, and seems to me quite sufficient to shew that the merit of the introduction of steam-navigation rests with my late father entirely; and that the only merit of these two persons consists in following out the plan he had adopted, and long before promul- gated, of applying wheels or paddles turned by steam in pro- pelling vessels at sea. Observations on the Glaciers and Climate of Spitzbergeii^ made during a Visit to that Island ; zaith a Reply to Mr Scoresbi/s Remarks. By Thomas A. Latta, M. D., M. W. S. Com- municated by the Author. JL HRQUGH the medium of the Philosophical Journal, Oct.»— Dec. 1826, I laid before the public a short essay on the condi- 92 Dr Latta's Observations on the tion of the Arctic Sea and Ice, in which, corroborative of state- ments resulting from personal investigation, I adduced the au- thority of several voyagers, who have written on the same sub- ject ; and it will be seen, that to the valuable treatise on the Arctic Regions, written by Mr Scoresby, I gave my tribute of obligation. In the course of my essay, having occasion to make a few re- marks on the peculiarities of the Arctic climate, I notice the in- fluence which localities may have in giving rise to erroneous im- pressions ; and the mildness of some of the sheltered bays in Spitzbergen, is particularized as tending to mislead the judg- ment, in estimating the condition of that inhospitable country ; and as there appears to be a want of accuracy in Mr Scoresby 's remarks on this subject, I have presumed to say so, and have attributed such deviation to the misleading influence of local pe- culiarities in the following terms : — '' The impression formed by such mildness, may have divested the ingenious Mr Scoresby of his accustomed acuteness, whilst treating of the climate of Spitzbergen in his ' Account of the Arctic Regions ;' for, biassed by the indications of the thermometer, he reasons himself into the supposition, that the climate, during summer, is more tem- perate than in Scotland, and gives to, the circle of perpetual congelation an altitude of 7791 feet, — a statement contradicted by facts." By this, I have unfortunately incurred that gentle- man's displeasure. The following statement will enable the reader to judge for himself: — The passage in Mr Scoresby's Treatise on the Arctic Regions, which indu- ced me to make the assertion which has offended him, is the following, vol. i. page 123 : — " It may appear a little remarkable, that an effect of cold, amount- ing to perpetual frost, that is observed in elevated situations, in temperate, and even in hot climates, does not occur on the tops of considerable mountains in Spitzbergen ; and it is really extraordinary, that inferior mountains, such as Ben Nevis in Scotland, the elevation of which is only about 4380 feet, should sometimes exhibit a crest of snow throughout the year, while in Spitzbergen, where the mean annual temperature is about 30° lower than in Scotland, and the mountains little inferior in elevation, the snow should sometimes be wholly dissolved at the most considerable heights." And, biassed by the indi- cations of the thermometer, which, as observed by Captain Phipps, stood in Spitzbergen so high as 58 J° ; and allowing the usual complement of 90 yards of altitude for every degree of decrease, he says, — " It will require an eleva- Glaciers and Climate of Spiizbefgen. 93 tion of 7791 feet for reducing that temperature to the freezing point ; and hence we may reckon this about the altitude of the upper line of congelation when frost perpetually prevails." Now, certainly in this statement it is dis- tinctly stated that the warmth of the climate during summer is so great, as is sufficient for the solution of the snow, even on the tops of the mountains, which cir* cumstance is rendered remarkable, when contrasted with the condition of mountains in lower latitudes ; and Ben Nevis in Scotland is exemplified as retaining its crest of snow throughout the year, though nearly of the same ele- vation as the hills in Spitzbergen. ! Now, what other conclusion could we draw from such a statement, than that our author meant to convey the notion, that at the one place the warmth of the climate in summer is somehow so great, that all the snow of winter, even on the tops of the mountains, is dissolved by it, whilst, at the other place, hills of equal elevation retain their crest of snow, the warmth of the climate not being sufficient for its solution. No doubt it is well known that the presence of snow in summer on Ben Nevis, like that on Lebanon, Mount Jura, and various sequestered nooks in the Apennines, with other alpine situations below the circle of perpetual frost, depends not on the frigidity of the atmosphere, but almost entirely on local peculiarities, and is nearly as little under the influence of climate, as the frozen stores in our ice-houses ; but Mr Scoresby here does not seem to reckon on the effects of local situation, but mentions the appearance as a matter of contrast between the summer heat of the two countries ; and if he says the snow in Spitzbergen is not only entirely dissolved, but if he also places the circle of congelation at a much greater height than we find it over Scotland, is it not distinctly implied that the climate of the former is considered warmer during summer than that of the latter? Such, I think, is the only construction we can put on this portion of Mr Scoresby 's narrative. It now remains that we adduce those facts which are hostile to his allegations. They result from personal investigation ; and what I consider of no mean importance, are supported by Mr Scoresby's own evi- dence. During the warmest portion of the very hot summer of 1818, I passed se- veral days on the shores of Spitzbergen. My time, otherwise unoccupied, was spent in ranging through the country, in the course of which I traversed one of the principal glaciers, or wonderful valleys of ice, for which this strange land is famed. I made a short excursion inland. And whilst the ship's crew were occupied in securing the blubber of a very large whale, found dead on the strand, I explored a considerable portion of the shore, and climbed a moun- tain, from the summit of which I had a view of the interior. These various excursions afforded me ample opportunity of making observations, the result of which, under the varied positions, always furnished, in so far as climate was connected, the same uniform result. And the impression, formed on my mind, was the reverse of that which Mr Scoresby's account is calculated to produce, for so far from the snow being wholly dissolved on the ^mountain tops, every mountain and valley, excepting tracts along the shore, was buried in eternal snow. My first landing on Spitzbergen was in the neighbourhood of the Seven ^ Br Latla'^s Obserxi^aiions on the Icebergs, wlrieh lie a little to the north of the channel which separates Fair- Foreliand from tlie main, in the 79th degree of north latitude. There, excepting whfere the snow' had been wreathed, the beach was entirely bare. My chief commission being to collect specimens of the various animals which might come in ray way ; and meeting with few on the shore, but such as had been our constant attendants at sea ; I was induced, notwithstanding the dense mist which enveloped the interior, to follow the course of a valley leading in- land, and had not gone a great way ere the snow became general. And when the mist lightened for a moment, it disclosed one vast solitary wild of monoton- oua whiteness, and, as it bore not the smallest traces of any living thing, I retraced my steps. Such appearances were certainly indicative of a low in- land temperature, since the snow, even on the lower grounds, remained un- dissolved. I next directed my steps towards one of the chief icebergs, and prompted by curiosity, having ordered the boat to meet me at the other side, I resolved to traverse this stupendous mass on foot. During this very hazardous excur- sion, I had an opportunity of witnessing such phenomena as went to prove, not only the lowness of the inland temperature, and the little elevation of the circle of freezing in Spitzbergen, but also the occurrence of a wanner air over the beach and the neighbouring ocean. The seaward extremity of the iceberg terminated in a perpendicular pre- cipice, estimated at 200 feet high, which rested on the strand, and was wash- ed by the breakers. From thence it extended inland along the valley, which, to a certain altitude, it completely filled. The surface rose with a gentle slope of from 10° to 20°. On the seaward extremity, a thawing temperature, exerting its influence, had not only dissolved all the snow, but also a portion of the ice, and thus rendered the slope more abrupt. The interior extremity, along with the adjoining mountains, was buried under a common covering of never melting snow. The mass was cleft throughout, with many a yawning gulph, through which the tinkling of the subglacial rill, the produce of the melting snow and ice was heard far beneath, pursuing its course to the sea. These rills, indicating the action of a thawing temperature, occurred towards the lower extremity of the berg ; it being probable that the upland country is subjected to perpetual frost. The recollection of these fects is impressed on my mind by an event never to be forgotten. The rents, with which the iceberg was every where traversed, de- scend, perhaps, to its very bottom. Their width, which sometimes exceeded a fathom or two, was greatest towards the lower extremity ; and being im- passible, I was forced to take a circuitous route along the higher regions of the iceberg, where the rents could be leaped across, although sometimes not without danger. I had not ascended far, ere patches of snow became com- mon, but so long as it was partial, the position of the rent beneath was gene- rally well defined, there being a marked difference of hue between the snow which filled them, and the layer which was spread over the deeper coloured firm ice. These crevices were not only widest towards the seaward extre- mity of the mass, but they enlarged all along its centre, so that before I had reached midway across, I was obliged to deviate still farther, and found no 3 Glaciers and Climate of Spitzbergen, 95 passage till I had ascended to the vicinity of the snow line : there it became necessary to proceed with the greatest possible caution, for the snow having become deeper and more general, hid under the almost uniform surfece the site of danger. Where the snow completely filled the rents, as was very oftea the case, the danger was diminished ; and though sometimes plunged to the haunches, yet I easily extricated myself, but it sometimes happened, that only a thin covering was drifted across the mouth, incapable of sustaining any weight ; one of these had well nigh proved fatal to me, for whilst, with cau- tious steps, I moved forward, on a sudden my support gave way, my extend- ed arms, and the resistance afforded by my gun, suspended me for some se- conds between the opposing brinks, over a fearful chasm. After a few dan- gerous struggles, I was enabled to extricate myself. It is impossible to de- pict the feelings of this awful moment, which were in nowise lessened, when, having gained the firm brink, I viewed the dark abyss which had, but a mo- ment before, threatened me with destruction. My fears magnified my dan- gers tenfold ; and, for a while, deprived me of the resolution to move, till somewhat recovered from my panic. I hesitated whether I should proceed or re- turn. At length, considering that half the mass and many dangers were behind me, and the boat waiting on the beach before me, to which there was no other passage but across the iceberg, I moved on, and almost crept out the rest of my way, and happily reached the beach in safety, where the boat had been waiting for a length of time for my arrival. These particulars 1 have been induced to detail, with a view to coiToborate what I have stated regarding the position of the snow. It will appear, that a thawing process was in operation chiefly in the vicinity of the sea : That, there, the snow was dissolved, and the ice in a melting state, furnishing wa- ter to the streamlets flowing underneath : That, as I ascended inland, the snow was first met with in patches, and at length became the uniform cover- ing of all the upland country. Mr Scoresby says, vol. i. p. 103., " The up- per surfaces of icebergs are generally concave, the higher parts are always covered with snow, but the lower parts (meaning the seaward extremity) in the latter end of every summer present a bare surface of ice." Now, if such was the aspect which this country presented during the warmest month of a milder season than is common in Greenland, when more ice had disappeared from tlie Arctic Sea than the oldest fisherman remembered, how is Mr Scoresby's statement to be reconciled with it ? But the actual condition of Spitzbergen not only contradicts- Mr Scoresbv's statement, by demonstrating unequivocally, the permanency of the snow, and consequent lowness of temperature ; it also points out the insufficiency of the means, the conjoint operation of which, he thinks, produces this fancied warmth. A statement of these is found, Arctic Regions, vol. i. p. 125., in the following terms : " The weather, in the months of June, July and August, is much clearer at Spitzbergen than it is near the neighbouring ice, where most of my observations on temperature were made ; and, as such, the tem- perature of these months on shore must be warmer than at sea, and so much higher, indeed, as is requisite for occasioning the dissolution of the snow, even on the tops of the mountains, and this is no doubt the fact ; for, besides the increase of temperature produced by the prevalent clearness of the atmos- 96 Dr Latta*s Observations on the phere, we may bring into the account the circumstance, that, from the steep- ness of the hills, the sun is always actually vertical, to one surface or other of the mountainous coast, throughout its daily course." But it must be evi- dent, that, if such were actually the case, if serenity prevailed over the land where the temperature was higher than at sea, it would follow, that, as the interior exposed the broader surface for the sunbeams to impinge on, and as it is removed from the colder atmosphere of the ocean, the heat there would more readily accumulate, and, instead of valleys filled up, and mountains buried under perpetual snow, we would see the whole which had accumulated du- ring the storms of the long dark winter night, speedily dissolved, and thus give rise to torrents and rivers. But, so far as we could discover, the land was riverless, and eternal frost prevailed. During a very great part of the year, the atmosphere is intensely cold, the temperature of the winter months being commonly 60° or 70* below the freezing point * ; during summer it is only on the sea-beach that it ranges a little above 40' : even this is of rare occur- rence ; for the air is for the most part obscured with impenetrable fogs, (for the production of which sharp peaks are peculiarly adapted), so that the warmth of the sun's rays is absorbed long ere it has penetrated the gloom ; and even during the short intervals of serenity, but a small proportion of heat can reach the surface of the earth, on account of the great body of air the ob.. lique sunbeam has to traverse, and the additional resistance opposed to its progress, by the density of the cold atmosphere, which not only intercepts part of its caloric, but counteracts the influence of the small portion which reaches the surface, by the frigorific emanations sent from the superjacent regions of frigidity. Captain Weddell, in his interesting narrative of a voy- age to the Antarctic Ocean, so far from considering the temperature of the islands there elevated, attributes the cold of the neighbouring sea to the fri- gid influence of the soil ; and were Spitzbergen not too insignificant to pro- duce such consequences in the north, I doubt not but the same conjecture might be applicable. It is an island of no great magnitude, and is mostly bristled into lofty peaked mountains ; the soil is refrigerated by the terrible severity of an almost perpetual winter, and excepting adjoining the sea, is at all seasons covered with snow ; consequently the sunbeam has very little ef- fect on it. The influence of these peculiarities is not diminished by the con- dition of the adjoining sea, which is either covered with ice loaded with snow, or open ; in which state it constantly absorbs the little heat left in the impo- verished sun-beams, without having its temperature elevated, this being pre- vented not only by the permanency of the currents, but by the sluggishness of the sea-water at a low temperature. Its freezing point is about 4° lower than that of fresh water, and its mobility, in that condition, being much im- paired, the revolution produced among its particles goes on but slowly, and consequently much time may be spent ere the temperature of the upper strata of the sea can be elevated, even to the freezing point of fresh water ; nor can they attain even that by 2', if the surface is strewed with ice. Un- der these circumstances much caloric may be abstracted from the warmer air, as it flows on to the land, and there its temperature wiU soon be reduced to * How has this been ascertained ? — Edit. Glaciers and Climate of Spitzbergen. 97 that of the frozen territory ; not only from the great affinity which melting snow has for caloric, but from the gelid state of the soil itself. Thus, it may be easily conceived, that the general temperature of Spitz- bergen is always low, and that the sun does not elevate the thermometer much above the freezing point. I do not say that his power is inconsiderable ; for his presence in the firmament constitutes the difference between summer and winter, producing a range of temperature of probably 70* or 80*. In winter it falls to 40* or 50° below zero, but in summer it may be above freez- ing ; indeed, on the snowless grounds in the vicinity of the sea, the tempe- rature is sometimes elevated to between 40* and 50* : this, however, I do not consider as general, but as confined to the skirts of the land, where the warmer sea breeze has dissolved the snow, furnishing an earthy sheltered soil, for the suns rays to impinge on ; and this seems the more probable, as, towards the in- terior, where the sun acts exclusively, the snow is perpetual, it is also sup- ported by atmospheric phenomena, such as I witnessed during my visit. The wind blew from the ocean, and though serenity prevailed there, so that our ship lying about a couple of leagues in the ofTmg, was always in view, yet a very dense mist enveloped the land. The cause of such appearances, though it mi^ht be partly looked for, in the intermixture of strata of air of different temperatures, and in different states of humidity, might chiefly originate in the difference between the temperature of the warmer air coming from the sea, and frigid surface of the soil. As the wind from southern latitudes, such as prevails in June, July, and August, passes over a sea, the tempera- ture of which during summer, when free from ice, is elevated a few degrees above freezing, it becomes loaded with moisture. In its course towards the coast it i^ neither interrupted by land ; nor, does it encounter a colder body than that from which it imbibed its humidity; consequently, though saturated, it continues serene, but as soon as interrupted by frozen mountains, or lands, or seas, covered with snow and ice, its temperature is reduced, and being no longer able to hold its moisture in solution, gives birth to mist, and hoar- frost, shrouding the atmosphere with obscurity. These phenomena are well illustrated by the climate of Spitzbergen. That the adjoining sea is more temperate than elsewhere i*i the Arctic ocean, is not only established by ob- servation, but is proved by the more scanty production of ice all along the western shores of the island, and is probably caused by the warmth of the feeble remnant of the Gulf Stream, which having skirted the coasts of Scot- land and Norway, passes on to Spitzbergen, and is lost among the currents in the frozen ocean. The Sea freezes more tardily in consequence of this, and a remarkable gulf, or open sea, extending even to the 80° of northern lati- tude, lying in the direction of this current, and called the Whale Fishers' Bight, is thereby produced. And what strongly points out the fact is the cir- cumscribed limits of the icebergs on the western shores at Spitzbergen. They all terminate at the beach ; whereas in Baffin's Bay, and on the east coast of Old Greenland, where the temperature of the water is low, icebergs genera- ted m the valleys, stretch out into the sea, and, in the process of time, furnish repeated crops of those mountainous masses, found afloat on the ocean. In the sea of Spitzbergen, however, these are never met with, for the higher temperature of the water limits the glacier which produces them at the beach. APRIL— JUNE 1827. r 98 Dr Latta''s Observations on the The moist air retains its humidity as it passes over this warmer sea, but as soon as it reaches the icefield, its caloric is abstracted, and its vapour dischar- ged in the form of mist or snow ; or, if wafted to the land, it dissolves the snow on the shore : but ere it reaches^the interior, it is refrigerated by the gelid surface over which it has passed ; producing, as in the former case, much hoair- frost and snow, by which the air is almost constantly obscured ; hence it is evident the sun's heat can produce but little influence on the soil. On account of such a state, I could obtain but a very partial glance of the interior ; yet shortly after I obtained a very satisfactory view from the sum- mit of a hill of considerable elevation. During this excursion, I had the plea- sure to be accompanied by Mr Scoresby himself. We landed some leagues far- ther south than the scene of my investigation on the preceding visit, and whilst the crew were flensing a whale found on the beach, we directed our steps towards the most accessible mountain in the neighbourhood, from the summit of which we enjoyed a sight of one of the wildest scenes the imagi- nation can fancy. The sea breeze, which had formerly filled the atmosphere with mist, had now died away, and all was cloudless and calm. The sea was destitute of ice, as far as the eye could reach ; and, though the flats on the shore and even the higher lands on the beach had lost their covering of snow, still the interior was every where clothed with it. Such are incontrover- tible facts, and clearly indicate, I think, that the warmth of the climate, as well as the means by which that warmth is produced, are not in concordance with Mr Scoresby's statement, since the summer heat seems insufficient for the solution of the snow, even in the valleys. That such is the case seems to be implied even in our author's own words. Arctic Regions, vol. i. page &4, he says, " The valleys of Spitzbergen opening towards the coast, and termi- Tiating in the back ground with a transverse chain of mountains, are chiefly filled with everlasting ice. The inland valleys at all seasons present a smooth and continued bed of snow ; in some places divided by considerable rivulets, but in others exhibiting a pure unbroken surface for many leagues in extent.*^ Now, if such a statement is correct, and doubtless it is, it is surely at variance with the notion that there the circle of perpetual frost is 7791 feet high, or that the air is so temperate, that all the snow is dissolved, even on the tops of the mountains. Indeed, if such were the case, Mr Scoresby 's theory of the formation of icebergs would be reduced to a mere chimera. Thus, vol. i. p. 107, he says, " The time of the foundation, or first stratum of icebergs, being frozen, is probably nearly coeval with the land on which they are lodged ; their subsequent increase seems to have been produced by the congelation of the sleet of summer 6y nutuirtn, and of the bed of snow annually accumulated in winter, tvhich, being partly dissolved by the summer sun, becomes consolidated, and on the decline of the summer heat, frozen into a new stratum of transpa- rent ice. Snow, subjected by a gentle heat to a thawing process, is first con- verted into large grains of ice, and these are united, and afterwards consoli- dated, under particular ch*cumstances, by the water which filters through among them. If, when this imperfectly congealed mass has got cooled down below the freezing temperature, by an interval of cold weather, the sun break out and operate on the upper surface, so as to dissolve it ; the water which results, runs into the porous mass, progressively tills the cavities, and being Glaciers and Climate of Spitzbergen. 99 then exposed to an internal temperature sufficiently low, freezes the whole into a solid body." The largest icebergs are situated on the west side of the island ; which, as in all Arctic countries, is always the warmest : they occupy valleys sheltered by the adjacent heights, opening towards the sea. Now, how is it possible that, in such situations, the snow flake could accommodate itself to a partial thawing and freezing again, if, on the adjoining mountain tops, 3000 or 4000 feet high, the snow is wholly dissolved ? Mr Scoresby, however, alleges, that such really happens, and thinks that these icebergs, by a continuation of this thawing and freezing of snow, are able,— notwithstanding the elevated tempera, ture, " the dismemberment from the lower edge, producing these mountain- ous masses found floating on the ocean, and the avalanches from the moun. tain summit," are able, — not only " to prevent diminution of the parent gla- cier," but to produce a " perpetual increase." Mr Scoresby finishes his remarks on my observations with the following : '• What facts Dr Latta can bring forward to shew that a thawing temperature never occurs so high as 7791 feet I know not, especially when, by observation of the thermometer, I found the temperature in Spitzbergen so high as 37. at midnight at an elevation of 3000 feet." The few facts which have been already produced are, in our humble opinion, sufficient for the end they have to serve. However, as our author seems to lay some stress on the above ob- servation, and adduces it for our notice, we will surely not be deemed for- ward if we make free Avith it. We have already noticed, that Mr Scoresby reared his estimate of the altitude of perpetual frost over Spitzbergen, on the most elevated temperature recorded there, as observed by Commodore Phipps during a voyage towards the North Pole. That commander, while he tarried in Vogel Sang, near the rendezvous of the present expedition under Captain Parry, pitched his tent on a low flat island in the sound. The position was highly favourable to the accumulation of the heat of the sun ; accordingly the thermometer rose, on one occasion in July, to 58i°. Guided by which observation, Mr Scoresby, al- lowing 90 yards of altitude for every degree of decrease, estimates the height of perpetual frost at 7791 feet. "Hence," says he, "we may reckon this about the altitude of the upper line of congelation, where frost perpetually prevails." ;But, even at the time when Commodore Phipps noted this tem- perature, the mountains were covered with snow, nor did he ever see any ri- vulets which the liquefaction of snow, had the high temperature been general, would have produced. The low ice skirting the northern shores of the island was covered with snow. And though it was July, the little pools on the ice in the neighbourhood of the Sound were sometimes frozen over. These strag- gling circumstances certainly shew that the high temperature was local, and if local, afforded no grounds for Mr Scoresby's calculations ; ,but he thinks otherwise, and endeavours to give stability to an untenable allegation, by adducing an observation of his own : " I found," says he, " the temperature in Spitzbergen so high as 37° at midnight, at an elevation of 3000 feet." On this occasion I had again the pleasure of accompanying him. The thermometer, placed among stones in the shade on the brow oftlwhill, G 2 100 Dr Latta\s Observations on the indicated a temperature of 37° ; on the plain it was 44° ; the difference then was 7% which, even allowing that there was a decrease of only one degree for every 90 yards of ascent, reduces the altitudes from 3000 feet to 1890 feet. Nor can this observation of Mr Scoresby's prove any thing else than that the circle of perpetual frost is not so high as 7791 feet ; for there is a strong pre- sumption that it was about its greatest altitude during our visit ; for, not only was the season much more temperate than is common in Greenland, but the observation was made during the warmest portion of that season, and yet the temperature of the plain was 44° ; the difference between that and freez- ing is 12° ; and though we allow the full complement to every degree of dif- ference, perpetual freezing should be encountered not higher than 3240 feet. No doubt the observation was made at midnight, but the temperature at midnight and mid-day is nearly the same ; and if the warmth near the shore is a good deal dependent on the breeze, the hour of observation is of less import- ance ; and farther, the hill was situated near the sea, where the temperature is evidently higher than inland. The thermometer also was placed among stones on the brow of the hill ; these stones were small fragments of lime- stone, lying on a slope perpendicular to the sun's rays, and which, when they imbibe heat, can retain it long. Hence, the thermometer was probably higher than the temperature at such an elevation should have been. I may also notice, the top and shoulders of this hill were deeply clad with snow, the lower margin of which was in a state of rapid solution ; but, on the hill top it was frozen so hard as to resist impression though leaped upon, which indicated, that, though a thawing temperature had been there, it was not permanent ; and if so on a hill so low, and so exposed to the sea breeze, we may conceive the condition of the mountainous regions in the interior, particularly as the temperature evidently sinks as we recede from the shore. Indeed, the solitary evidence of the thermometer can afford no satisfactory indication of the amount of altitude, as the lower regions of our atmosphere are very much under the influence of localities, which, particularly in insular situations, is much circumscribed. Accordingly, though the thermometer usually accompanies the scientific traveller, its movements are seldom ad- duced in testimony of elevation. And we cannot help being a little asto- nished at Mr Scoresby's faith in it, and the conclusions at which, biassed by its indications, he has arrived, when we reflect on the peculiarities of a Greenland atmosphere ; and more especially, since these conclusions are most positively contradicted by every other phenomenon presented to the sense in the dreary scenery of Spitzbergen. Indeed, his calculations are more at va- riance with the enlightened views of modern science than the unphilosophical notions of our forefathers, who fancied, that, as the ground became heated by the sun's rays, it imparted caloric to the stratum of air in contact, which, in its turn, warmed the air above, and the temperature of each superjacent stratum thus depended on the proximity to the source of warmth ; but, since it is now established, that the decrement of caloric depends on the increase of capacity which air acquires by the diminution of density, it is evident, that, until be- yond the reach of the influence of the peculiarities of local situation, the evi- dence of the thermometer is inadmissible, and even then its movements are 3 Glaciers and Climate of Spitzhergefi. 101 rendered irregular by numerous circumstances, which no allowance can recti- fy, nor caution prevent *. If we diverge from the equator, descend in the ocean, or mount into the atmosphere, we generally encounter a decrease of temperature. If such were regular and uniform, the thermometer would afford a good criterion to deter- mine height^ depths or difference of latitude ; but this method, from numerous cir- cumstances, is quite inapplicable. The irregularity is greatest in the air, aaid in no country is that irregularity greater than in Greenland during the sum- mer months ; for the atmosphere there is subject to greater vicissitudes than, perhaps, in any quarter of the globe. JMr Scoresby states, vol. i. p. 397, " In the Polar Regions forcible winds blow in one place, when at the distance of a few leagues gentle bieezes prevail. A storm from the south, on one hand, ex- hausts its impetuosity upon the gentle breeze blowing off the ice on the other, without prevailing in the least. Ships within the circle of the horizon may be seen enduring every variety of wind and weather, at the same moment ; some under close reefed top- sails labouring under the force of a storm ; some becalmed, and tossing about, by the violence of the waves ; and others plying under gentle breezes from quarters as diverse as the cardinal points." The temperature is as variable as the winds, and is entirely under their influence. It has been observed to undergo a change of many degrees within the small compass of an hour or so. On shore the vicissitudes are still greater, on ac- count of the greater variety of circumstances calculated to produce it. On the sheltered hill side exposed to the sun, the general warmth of summer may be felt, whilst on the opposite side we may be chilled by the cold of winter. By the sea-side, a few vegetables spring up and flourish for a while, but to- wards the interior, neither plant nor animal is seen. Now, it must appear evi.. dent, that if we were to calculate on the height of continual frost by observa- tions of temperature made on such a surface, the boundaries would be more irregular even than the surface of the soil, a physical impossibility. Rome, differs but little from Naples in latitude, and the longitude is nearly the same ; but the temperature of the former in summer is sometimes 12° or 14° higher than that of the latter ; but we are not to infer from that, that the circle of perpe- tual freezing over these differs 2000 or .3000 feet in altitude. * Dr Latta seems to be mistaken in supiwsing, that tlie decrease of temperature in the atmos- phere would be regulated by the capacities of the different strata for heat, were it not for the conti- guity of the earth's surface ; because he temperature observetl during ascents in balloons deviates farther from this law than temperatures on mountains usually do. The law of decrease depending on capacity, was first advanced by M. Dalton, afterwards by Professor Leslie, and still more lately adopted, for a time, by Mr Ivory, who was at length convincetl of its insuiliciency, and abandoned it. . The atmosphere, it is true, has only been explored, and that imperfectly, to the height of about four miles. But this partial research leaves no doubt, that the same weight of air in the upper regions contains much more heat than below ; or, tliat the decrease of temperature is much slower than the law of capacity requires. Various reasons may be given for this, and, among others, that heat ra- diates copiously from the lower warmer strata to the dilated colder regions, which, from their cold- ness, will, besides, absorb heat with avidity from the fresh solar rays by ^hich they are penetrated ; for these rays are well known to have lost much of their strength by the time they reach the lower strata. Add to this, that, when currents occur in the upper regions, they usually come from a war- mer climate, and the lower currents from a colder. So that, upon the whole, very good reason may J)egivenwhy the higher atmosphere should bemuch warmer than the law of capacity requircs.~EDiT> 102 On the Glaciers and Climate of Spitzhergen. Travellers in climbing mountains, generally observe a slower diminution of temperature towards the base, on account of the accumulating warmth of the plain. Saussure noticed but little difference between the temperature of Geneva and the elevated valley of Chamouni. On ascending Mount vEtna, the traveller finds the thermometer standing as high at Nicolosi as at Catania, though the difference of altitude is 3000 feet. Winds modify the tempera- ture of the air very much, as they carry along with them the heat of the soil over which they pass, and as they curl up the mountain side, they bring the temperature of the most elevated situation nearer to that of the plain. Hum- boldt observed the temperature of the Peak of Teneriffe fall to within 3° or 4" of freezing, which differed from that of the plain 36". But Labillardier found the thermometer on the same spot much higher, whilst the difference amounted only to 17° : when the latter traveller made his observation, the wind blew from the arid wastes of Africa, whereas, it came from the wide ocean during Humboldt's experiment. On the volcano of Antisana in the kingdom of Quito, the latter enterprizing philosopher saw the thermometer stand so high as 60°, at an elevation of 1 8,000 feet. I myself carried this in- strument three times during three successive days to the summit of Arthur Seat, elevated scarcely 700 feet above the plain. During the first ascent, the decre- ment of heat gave it an altitude of about 135 feet, and during the second of 1755 feet, and during the third of 1350 feet, which discrepancy was chiefly produced by the wind. In Scoresby Sound, on the east coast of Old Green- land, our author observed the temperature on shore so high as 70% and more oppressive than in the West Indies, whereas it was at the same time in the offing so low as 40°. If, under such circumstances, a change of wind should happen, and a breeze blow briskly from the ocean, whilst the observer was marking the descent of the thermometer, in climbing an elevation, the conse- quence would be, that, as the temperature of the sound was elevated by the local accumulation of heat, it would be speedily cooled down to the more ge- neral temperature of the air of the ocean, which, as it came off fields of ice, might make a difference at 30° or 40°, and this, if rigidly calculated on, would majce an error of upwards of 10,000 feet ! Or even if no change of wind oc- curred, he would soon emerge from among the heated atmosphere of the bay, and so be subjected to the same error, and this is precisely the case with the little island of Spitzhergen. There, through the conjoint operation of the sun and the sea-breeze, the snow on the beach is dissolved, and the air of the earthy, sheltered bay, is more elevated in temperature than the surrounding atmosphere ; and it seems that this has been the circumstance which has mis- led Mr Scoresby, for he has hastily set down this local accumulation of heat as the general feature of the atmosphere throughout the island ; so he says the temperature over Spitzhergen is warmer than on the neighbouring ocean, " so much so indeed as is requisite for dissolving the snow even on the tops of the mountains." But Spitzhergen is not an island of great magnitude, and its surface is much lessened by very considerable arms of the sea, and large sinuses and bays which are formed in it ; so that if, whilst the snow on the ice field on the adjoining sea is scarcely dissolved, solution is effected on the tops of the mountains, and the circle of perpetual freezing elevated to 7791 Mr Murray on the Paragrele or Protector from Hail. 103 feet, the body of warmer air must be collected into a strange pyramidal form, which one would think the cold circumambient air would soon pull down. Leith, / 215/ April 1827. V On the Paragrele or Protector from Hail. By John Mueray, Esq. F. L. S., M. W. S., &c. Communicated by the Author. Dear Sir, Jr ERMiT me to submit to your notice a few remarks on the subject oi paragreles, as I have witnessed them extensively used in some districts abroad. The term implies that they are safeguards from hail, as para- tonneres signify protectors from the thunder-storm ; they both depend on similar principles, and must stand or fall together. Conductors of lightning, if constructed on scientific principles, have been found an efficient guard from meteoric fire ; and hail, being a meteorological phenomenon dependent on, and modified by, the electricity of the atmosphere, it follows, that paragreles are founded on the true principles of inductive science, and must form a shield of protection to the property of those enlightened individuals whose intelligence may lead them to their adoption. Superstition, pale and terrified, may regard their erection as op- posed to the providence of Heaven, and ignorance erect its crest of feeble opposition ; but Truth defies their combined attack, and triumphs in the light she diffuses. If an insulated thunder-rod can discharge the cloud of its forked and fiery elements, and scatter its parts to the four winds of heaven, a fortiori paragreles, or pointed metallic wires, infinitely multiplied, and extending over a vast surface, must exercise a power infinitely greater. I consider it quite absurd to circumscribe the influence of a conducting rod within a given radius, as some have done ; and have confined it to about 300 feet, because all this must depend on a variety of combining circumstances, — as the comparative de- gree of the conducting character of the metallic tod, the mete- orological feature of the ah', as to its barometric or hygrome- tric state : the intensity and altitude of the cloud, and the elec- 104 Mr Murray on the Paragrele or Protector from HaiL trical relation between the earth and the heavens. When I con- sider the electric phenomena of the fires of St Elmo, St Barbe, Castor and Pollux^ &c., I must conclude that the distance at which points act on the source of the thunder-storm must be very great. The light that tips the spire, or gilds the mast of ships at sea, are familiar examples, as well as the electric fires that occasion- ally gleam on the umbrella at night during a thunder storm, or those that are seen to fret the horse's mane. The altitude of the storm cloud has been variously estimated, say ordinarily from 8000 to 10,000 perpendicular feet. The fact remains certain and incontrovertible, that conductors do control the power of the lightning at this distance, and no doubt at distances still more remote. Our aerial electroscopes, as those of Kinnersley and others, become charged with electric matter at no great height, and I have found that, in the case of the electric kite, an eleva- tion of 100 perpendicular feet has always yielded me as mueh electricity as I could safely manage. Prior to this happy appli- cation of scientific truth, the only method of warding off the ef- fects of hail consisted in dispersing the coming cloud by the discharge of cannon from the alpine acclivity. In Italy and Switzerland, at least, these destructive discharges of fragments of ice, are the offspring and accompaniments of the thunder- storm ; and this being the case, we have powerful and presump- tive evidence in favour of paragreles ; that meteorological phe- nomena are electrical admits of no doubt, and Beccaria, Saus- sure, De Luc, Volta, &c. have incontestibly established the fact. It appears that paragreles were attempted in America, on the principles of Dr Franklin, in the year 1819; and with boasted success. They have passed from the New into the Old World, and now prevail in France, Switzerland and Italy. The para- grele in its first form, consisted of a pole crowned with a point of brass. From this extremity proceeded a straw rope, with a small cord composed of linen thread, passed through its centre, Bacca- ria and Volta having proved their conducting character. The description accompanying these remarks exhibits the paragrele in its most improved form, and as it is now used in the Canton de Vaud, the Bolagnaisc and Milanaise territories, &c., and re- commended by Sig. Arioli) Professor of Natural Philosophy in the University of Bologna. Mr Murray on the Paragrele or Protector from Hail, 105 Pinnazzi of Mantua proposed, as early as 1788, the erection of numerous metallic points in the fields, for the purpose of de- priving the clouds of their electricity, and thus preventing their resolution into hail. Many S9avans entertained the proposal as exceedingly plausible, especially those of the academies of Dijon and Arras, and called to recollection what had been previously stated by Guinard, Buissant, Morveau, Berthollet, and more recently by Bosc and Le Normand. A few years ago, Mons. L'Apostolle of Geneva endeavoured to modify the erection of Pinazzi by the substitution of straw ropes, but experience proved them inefficient. The paragreles of L'^Apostolle had fallen into discredit and oblivion, when, in 1821, Mons. Thol- lard, Professor of Natural Philosophy in the College of Tarbes in France, in the department of the High Pyrenees, revived them with some modifications. His proposal was to erect poles of willow, poplar, pine, chesnut, or other trees, armed with sharpened brass points, attached to a rope formed of ripe bar- ley or rye-straw, and raw-thread twisted throughout its extent. He contended that he had thus succeeded in securing a territory of ten communes. This assurance had considerable effect, and excited general attention. The French journals took the lead in the discussion ; some spoke favourably, and others unfavour- ably, of the project. The Italians, on their side, did not keep silent on a subject so important to their interests ; and the theo- ry of the paragreles has been attacked and defended in France, Italy and Switz3rland. Such is a succinct account of the history of the paragreles, so far as I was able to obtain it. The inferences deduced theore- tically from conducting rods are all in favour of them. The for- mation of hail is a well known electric phenomenon, and con- ductors of electricity are influential in changing the electric cha- racter, or modifying the quantity of electricity. By paragreles the hail or fragments of ice are softened into snow or melted in- to rain. The results obtained all demonstrate their value and importance. From the moment I witnessed them I unhesita- tingly pronounced a verdict in their favour. Mons. Crud has the merit .of having established them in the Bolognaise terri- tory ; Professor Chavannes in the Canton de Vaud (who met with considerable opposition and hostility) ; and Beltrami in Lombardy. 106 Mr Murray ovi the Paragrek or Protector from HalL The curious and remarkable facts and proofs which have been detailed in Mons. Crud's letter to Mons. Chavannes, dated 29th July 1824; and those by Dr Joseph Astolfi, in his communica- tion to Professor Onoli, give the most decided and indisputable proofs of their efficacy and successful application. They should be planted from one to two thousand feet apart, and the higher elevations similarly supplied. During my stay at Lausanne in the summer of 1825, I had a good deal of conversation with Professor Chavannes on the subject of the paragreles ; he complained bitterly of the opposi- tion he had met with, and the attempted ridicule that had been cast upon him by the journals of the day, and was glad to re- ceive an opinion from me decidedly favourable. It may suffice to say, that a greatjpart of the vineyards of the Canton de Vaud are now guarded by paragreles. My inquiries as to their utility throughout Switzerland have been extensive, and the voice in their favour unanimous ; and, on the other hand, in districts that were not guarded, the mischief was considerable. In one case, in a field immediately adjoining the boundary of the paragreles, the ruin occasioned by a hail storm was complete, but it ceased at this limit ; as if science had stood by the paragreles, and had been commissioned by Providence to say to the destructive me- teor, ** Hitherto and no further C " Here shall thy proud force be stayed." I am respectfully, dear sir, yours, &c. 3c? May 1827- Explanation of Plate IL Ai A pole of wood, which may be from 35 to 50 feet long. B, The earth in which the pole is fixed to the depth of about 3 feet. n, The termination of the brass-wire ; it is 3 or 4 inches higher than the summit of the pole, and sharpened at tlie point. b. The brass-wire attached to the pole in all its extent, resting in a shallow groove channelled in the wood. This brass-wire should be at least the 20th part of an inch in diameter. Cf Small rings which fasten the wire to the pole, and prevent it be- ing displaced. d, A small transverse pin, which secures the conducting wire at the bottom of the pole. Mr Murray on the Paragrelc or Protector from Hall. 107 e. Thorns, brambles, or furze, surrounding the pole, to secure it ^ from injury. Note That part of the wood which enters the earth should be charred, to preserve it from moisture ; while the remainder of the pole may be varnished, the better to secure its non-con- ducting character. The vai'nish of Lampadius, composed of a mixture of linseed oil, sulphate of copper, and lead, will be found remarkably good for this purpose. Observations on the Structure and Nature of' Flustra. *. By R. E. Grant, M.D., F.R. S. E., F.L.S., W.M.S., former- ly Lecturer on Comparative Anatomy in Edinburgh. Com- municated by the Author. JL HE regular forms of the cells of Flustra?, their close and exact arrangement, and the elegant foliage which they form by their union, early attracted the notice of naturalists; and the great flexibility, transparency, and ramified appearance of these substances, caused them to be universally regarded as marine plants, till Jussieu, by his discovery of the polypi of the Flustra foliacea {Mem. de TAcad. 1742), assigned them a place in the animal kingdom. The interesting observations of Jussieu on that species, of La?fling on the polypi and formation of the new cells of the F. pilosa, Ellis on the structure and forms of the cells of many British species, Basterus on the spontaneous mo- tions of the small bodies which escape from the apertures of the cells, Pallas on the mode of formation of the cells and on the nature of the bullae at their summits, and of Spallanzani on the structure and appearance of the polypi, have shewn that these animals possess a highly complicated organization, and have some of the characters of compound animals or zoophytes. Ellis has shewn that the forms of the cells vary remarkably in differ- ent species, presenting an obvious and useful character for their discrimination ; and nearly forty species of these animals, recent and fossil, are desc^'ibed by authors. No writer, however, has yet examined the minute structure, the mode of growth, and the * Read before the Wernerian Natural Historj' Society of Edinburgh on 24th March 1827. 108 Dr Grant on the Struciure and Nature of Plustra, mode of generation of Flustrae, with sufficient detail, either to comprehend the history of a single species, or to determine the true nature of the genus. The most accurate observers ha^e unfortunately confined their observations to the skeleton, while those who had opportunities of examining the soft parts, in the living state, have been blinded by preconceived hypotheses, and their observations are neither minute nor correct. The accurate and minute observations of Ellis and Pallas relate solely to the axis. Easterns examined these animals frequently alive on the coasts of Holland, and often saw the ova moving to and fro spontaneously on escaping from the cells ; but, as he maintained that the polypi of all zoophytes are merely species of vermin infesting the surface of aquatic plants, he naturally considered these moving bodies, both in flustrae and in other zoophytes in which he likewise observed them, as polypi which had left their habitations, to swim about for a time in search of prey, and again returned to their cells. Spallanzani observed the polypi bent like a bow in their cells, and supposed them connected to the cells by their lower extremity ; he remarked the bell-shaped arrangement of the tentacula around the mouth, and the con- stant currents towards that orifice, — ^but he did not perceive the ciliae placed on the two lateral margins of the tentacula, and imagined the currents to be produced " by the constant agita- tion of the arms."' The same function has been erroneously ascribed to the tentacula by most authors, and the number of these organs in any species has not been accurately ascertained. A very slight observation is sufficient to shew that the cells of flustrae are more isolated than they are in most zoophytes, and tlmt the lower part of the polypus is not continuous with a cen- tral fleshy axis, as it is in Sertulariag, Plumulariae, Campanula- riae, and many other keratophytes. This circumstance early led to an opinion that the polypi of flustrae have no connection with each other, and that the whole substance consists only of a con- geries of independent cells. This opinion was strengthened by the statement of Laefling, that, when one polypus of the F. pi- losa is touched, the neighbouring polypi are not affected, and that, in advancing from their cells, they advance without order or regularity. It is likewise stated by the same observer, that the new cells, placed around the margins of the branches, arc Dr Grant on the Structure and Nature ofFlustra. 109 formed by the developement of bodies which are protruded from the old cells contiguous to them ; and that, in the middle space, between the margins of the branches, we find the old polypi, for the most part, dead, or entirely removed from the cells. These views regarding the nature of Flustrae, seemed to be confirmed by the statement of Basterus, that the polypi have no connection with the cells, and occasionally leave them entirely to seek for nourishment ; and by the remarkable fact stated by Jussieu, that, after having retained a living flustra for a few days in a vessel of sea- water, he observed that all the polypi had left their cells, and lay motionless at the bottom of the vessel. There can be little doubt, from what I shall state hereafter, that this appearance, observed by Jussieu, consisted of the escape of the ova from their cells, and probably their fixing themselves on the bottom of the vessel. I have found them often fix themselves permanently on watch-glasses in less than six hours after their escape from the cells. Basterus quotes Roesel as having like- wise observed the polypi to swim to and fro after leaving the cells, (Bast. Opusc. sub. p. 61., and Roesel. Supp. p. 605.) The same sentiments are still entertained by the most distinguished naturalists, both regarding the independent nature of the cells of Flustrae, and their mode of formation by the successive de- velopement of small vesicles or gemmules which have fallen from the mouths of the old cells. Lamouroux states (Hist, des Polyp, p. 99), that, when the polypus of a flustra has attain- ed its full -size, it discharges through the opening of its cell a small globular body which attaches itself near that aperture, increases in bulk, and soon assumes the form of a new cell. Lamai'ck maintains (torn. ii. p. 154.), that the polypi of these animals have no communication with each other, no common connecting substance, and " do not form compound animals ;**' that the gemmutes, or reproductive vesicles, after detaching themselves, fall into a determinate position beside the other cells ; that each polypus probably perishes after producing a single vesicle, and that the polypi are hence likely to be found alive only near the outer margins of the branches. As the branches of Flustrae almost always expand in breadth from their basc'to their free extremity, by the successive interposition of new rows of cells, which continually disturb the parallelism of 110 Dr Grant on the Structure and Nature of' Flustr/t. the older rows, and cause them to diverge outwards, Pallas imagined (Elench. Zooph. p. 34.) that sometimes the same cell discharges two reproductive gemmules. And as we always ob- serve the first cell of a new row small and deformed, he ima- gined that the two gemmules were discharged at different times, and that the second never arrived at a perfect state. We are still far from being sufficiently acquainted with the intimate structure and economy of animals thus low in the scale, to pre- dict, from the appearance of their dried axis, what may be the real nature^ the mode of growth, or the mode of generation of Flustras ; but it is very obvious, that if the generally received opinion, that they are not compound animals, prove correct, they ought no longer to be placed among zoophytes, whose polypi are always connected together by a com.mon axis, so as to form compound animals, the whole of whose parts are animated by one common principle of life and growth. The chief difficulties in examining the living phenomena of Flustrae, and which have probably retarded our knowledge of the structure and economy of these beautiful marine produc- tions, are the extreme minuteness, the shyness, and the compli- cated structure of the polypi ; the quantity of earthy matter in the parietes of the cells, rendering them somewhat opaque; the circumstance of the most common branched species, as the Flus- trajbliacea, F. truncata, &c. having the cells disposed in two opposite planes, which are closely connected to each other, back to back, and which prevents the accurate examination of these branched species under the microscope by transmitted light ; and the circumstance of the sessile species being fixed imniove- ably on the surface of solid bodies, whose opacity likewise pre- vents their minute examination by transmitted light. The nu- merous species of Flustros in the Frith of Forth, and their great abundance, both in deep water and near the shore, present a very favourable opportunity of examining the recent structure, and watching the living phenomena, of these animals at all sea- sons of the year ; and a careful examination of a single species, would not only illustrate the history of this numerous and ob- scure genus, but would likewise throw much light on the equal- ly unknown nature of Cellepores^ Discopores^ Tubulipores, Es- charce, and some other nearly allied calcareous zoophytes. The Dr Grant on the Structure and Nature ofFlustra. Ill species of Flustrae most abundant in the Frith of Forth, and from which the following observations have been chiefly taken, are tlie F.Jbllacea, a branched species with a double plane of cells and two projecting spines at each side of the apertures of the cell ; F. truncata a very delicate branched species, with a double plane of cells disposed in longitudinal straight lines, the sides of the cells are nearly straight and parallel, and have no project- ing spines ; F. carbasea^ a delicate, broad leaved, branched spe- cies, with a single plane of large transparent cells, without pro- jecting spines ; F. dentata, a sessile species, with a single plane of cells, generally incrusting the leaves of large fuci, the mar- gins of the cells are surrounded with numerous short projecting sharp calcareous spines ; the F. pilosa, a delicate sessile species, the apertures of whose cells are defended only by a single long- curved spine, it generally encrusts the stems of the smaller fuci or thQ branches of zoophytes ; and the F. telacea, a sessile spe- cies, with long quadrangular cells covering the leaves of large fuci, the cells having two short spines at their summit. When we look through a branch of the F. foliacea or other species of Flus- tra, which has a double plane of cells, we find that the boundaries of the cells on one side, do not coincide with the boundaries of those on the opposite plane ; the position of the cells on one side of the Flustra has no relation to those on the opposite side, and the appearances, presented by the contiguous cells on the opposite sides, are often totally different, the cell on one plane presenting a polypus in full activity, while the contiguous cell on the oppo- site plane presents an ovum arrived at maturity, with the remains of a decay- ed polypus nearly absorbed. This not only produces a confused appearance in the cells, but likewise diminishes their transparency ; and although, in such species, we can tear the two planes of cells separate from each other, this is generally attended with injury both to the cells and their contents. Such species, therefore, though the largest, the most abundant on our coasts, and those which have been most frequently examined, are ill adapted for the commencement of an inquiry of this kind, and the sessile species, which spread as a crust on the surface of opaque bodies, are still more unsuitable. The F. carbasea of Ellis, Lamouroux, Lamarck, &c. is a branched species, which not only has the advantage of being very common on our coasts, and of hav- ing tile cells arranged in a single plane, but likewise of having the cells of a large size, and very transparent, from the small quantity of lime in their parietes. This species is not found near the shore like the F. dentata, F. pi. losa^ and F. telacea, but is brought up in great quantities during the dredging season, from almost all the oyster-beds of the Frith of Forth, where it is found in ramified tufts, from two to four inches high, adhering by a very narrow base to the surface of shells, stones, fuci, and even of the smallest 112 Dr Grant (yii the Structure and Nature of Flustra. zoophytes. Its branches are broad, thin, semitransparent, studded with small reddish-brown spots, generally dichotomous, often trichotomous ; the trunks of the branches have thick, yellow, opaque margins, and their free extremities are very thin, membranous, transparent, and rounded or lobed. In the dried state the branches have a glistening membranous surface, they produce distinct effervescence, and coil up when touched with nitric acid, indicating the presence of carbonate of lime in the homy texture of their cells. They are so delicate that we rarely find a specimen in which the branches are not broken at their extremities, or perforated with ragged holes, and they are very often studded on both sides with small patches of the Flustra dentata, in the same manner as the Flmtra foliaca is very much infested in the Frith of Forth with creeping branches of the Cellaria reptans. There are no tubular roots in this species as there are in the F. tintncata ; the compact base is formed of condensed cells, which originally contained polypi. The polypi are deficient near the base, as in other flexible branched zoo- phytes, from the constant bending and pressure at that part, which gradually extend and approximate the sides of the cells, and thus render the stems more compact, flexible, and strong, to sustain the increasing weight of the branches, and consequent increased influence of the waves. This takes place likewise in the stems of branched zoophytes without polypi, and may be compared to the condensation of cellular substance into membrane and li- gament in higher animals. It is by rearing the ova of this species on the surface of watch-glasses, that I have found its first formed parts to consist of polypiferous cells, and not of tubular roots, as in many other zoophytes, although the same may be ascertained by a careful examination of these hard parts. The cells are arranged with remarkable exactness, in perpendicular straight lines, and in curved rows diverging on each side to the margin. It appears much more important in the economy of a flustra to preserve this exact arrangement, than to perfect the forms of the individual cells, as we often observe the cells at the commencement of the new rows assume a small and distorted form, in order to adjust them to the precise line of arrange- ment of the neighbouring cells. The cells are all nearly of the same size, in whatever part of the branches we observe them, and whether on young or old, large or small specimens. The cells are about a third of a line in length, and half as much in breadth. They are widest in the middle, slightly ta- pering and arched at the summit, and contracted to about a third of their breadth at the base- They open by an arched and folding aperture near their wider extremity, and all the apertures are placed on the same side of the branch, which is probably the most pendent in the natural state. As the cells have only one aperture, and are arranged in a single plane, we find one side of the branches in this species entirely free from apertures; thisNshut side of the branches is the most frequent seat of the Flustra dentata, but the side containing the apertures is likewise often attacked by this parasitic spe- cies. The anterior part of the cell consists of a thin transparent membrane. The margins of this membrane are supported and protected by several fasci- culi of straight slender calcareous spicula, which are attached to the solid sides of the cell, and extend inwards along the surface of the membrane. These spicula are all of the same size and form ; they are less than the tenth Dr Grant on the Structure and Nature ofFlustra. 113 part of a line in length, of equal thickness throughout, round at their free extremities, and dissolve with effervescence in diluted nitric acid. They are not perceptible without the aid of a microscope. The spicula are arranged along the whole of each side of the cell ; they are placed in nearly parallel groups, of three or four, at short distances from each other, and are most numerous at the middle of the cell where the principal part of the polypus is usually coiled up in a spiral turn. In the newly formed cells at the extremities of the branches, we at first ob- serve the spicula only at the part of the cell where the body of the young po- lypus is still entirely shut up in a sac. The cell is usually shut, or nearly shut, at the top, in the retracted state of the polypus, but opens by a kind of semilunar valve, with firm margins, when the polypus is advancing out from the aperture. The back of the cell is formed by a transparent tough membrane, which contains some opaque spots of calcareous matter, and exhibits numerous transparent branched lines, like vessels or fibres, running chiefly in a longi- tudinal direction. When the polypus is dead, and nearly absorbed, many of these vessels are seen radiating from the last remains of the polypus, which appear as a small red or brown spot in the centre of the posterior wall of the cell. The lateral walls of the cell appear to consist of a thin calcareous lami- na, lying perpendicularly to the general plane of the cells, it is white, and very tough ; and, when highly magnified, it exhibits fibres or vessels, running lon- gitudinally on its surface. Mr Ellis supposed the lateral walls of the cells of Flmtrce to be formed by a tube. When we look perpendicularly on this part, it appears as a white filament ; but when viewed laterally, we observe it to consist of a regular thin plate, surrounding the whole margin of the celL By examining carefully with the microscope the margins and corners of the cells, we observe, that there is a thin transparent membranous lining within the walls of the cell. In the young cells, this internal lining forms a small shut sac at the bottom of the cell, in which the infant polypus is inclosed and matured : this sac gradually extends to the aperture of the cell through which the polypus at length protrudes its tentacula ; and, at last, it is found nearly applied to the walls of the cell. The particles of sand and other matter, which sometimes appear to be within the cells, are generally on the outside, adher- ing to the posterior wall. The polypus of the F. carhasea is nearly twice as long as the cell which con- tains it, and when retracted within the cell, it is found coiled up in a spiral turn, extending from the aperture to the base of the cell. The polypus con- sists of the tentacula, the head, the body, and a large globular appendix, at- tached to the posterior part of the body. The tentacula are usually twenty- two in number, sometimes we observe only twenty-one ; they are long, slen- der, cylindrical, of equal thickness throughout, and have each a single row of cilice^ extending along both the lateral margins from their base to their free extremity- The tentacula are nearly a third of the length of the body of the polypus, and there appear to be about 50 cilise on each side of a tentaculum, making 2200 cilise on each polypus. In this species there are more than 18 cells in a square line, or 1800 in a square inch of surface, and the branches of an ordinary specimen present about 10 square inches of surface ; so that a com- mon specimen of the F. carhasea presents more than 18,000 polypi, 390,000 APRIL — JUNE 1827. * H 114 Dr Gmnt on the Structure and Nature of' Flusirce. tentacula, and 39,600,000 cilu». From the smallness of the cells of the F. fo- /iacea, the immense number and size of the branches, and the cells being dis- posed on both sides of the branches, the above calculations are often ten times greater in that species. When the polypus is stretched out from its cell the tentacula remain stiffly expanded in a bell-shaped form, their free extremi- ties being all equally reflected outwards; and it is somewhat remarkable, that when the polypi are torn, from their cells and exainined, quite dead^ in fresh Arater, the tentacula remain in the same stiff expanded form. The tentacula are exquisitely sensible, and we frequently observe them, either singly or all at once, striking in their free extremities to the centre of the bell-shaped ca- vity, when any minute floating body comes into contact with them. When the polypus is expanded, there is a constant current of water towards its mouth, produced by the rapid vibrations of the ciliae of the tentacula. The ciliae move by far too rapidly to be followed by the quickest eye, aided by the most power- ful microscope, and their motions are quite regular, ascending along one side of the tentaculum, and descending along the other, like a current. These re- gular motions appear more like some physical phenomenon than any move- ments depending on volition, as I have just shown, that an ordinary sized specimen of this animal can vibrate nearly 40,000,000 of ciliae at the same instant with this incalculable velocity, — an exertion of volition altogether inconceivable in an animal which exhibits no trace of a nervous system. All the ciliae of a polypus appear to commence and cease their motions at the same time. The bases of the tentacula are inserted into the outer margin of abroad prominent lip surrounding the mouth of the polypus. When the polypus is withdrawn into its cell, the tentacula form a close straight fascicu- lus quite distinguishable, like every other part of the polypus, through the transparent sides of the cell. The head of the polypus into which the tenta- cula are inserted, is a little more dilated than the rest of the body, and rounded ; and from the incessant revolution of particles observed within it, this part seems to be ciliated internally, like the sides of the tentacula. The head has the power of dilating itself by a sudden stroke, which is probably produced by the sudden retraction of the prominent sides of the mouth, when they have seized an animalcule. The tentacula and the head are of a white colour, and the rest of the body is generally of a yellow, or sometimes of a blood- red colour. We observe a fibrous capsule descending from the whole margin of the aperture of the cell, to be inserted around the body of the polypus a little below the head. This part is probably destined to aid the polypus in advancing from the cell, or to protect the interior of the cell from foreign matter. From the same part of the polypus numerous distinct fasciculi of soft fibres descend, to be inserted into the base of the cell ; these appear destined to retract the polypus into the cell. These fibres appear very much corrugated and inter- woven at the bottom of the cell, when the polypus is entirely withdrawn into its cavity. The body of the polypus is a lOng cylindrical fleshy tube of equal thickness throughout, to near its extremity, where it tapers a little. The body, after extending to the bottom of the cell, makes a curve backwards, and again upwards to the centre of the cell, where the posterior extremity is bent forward, and f o one side. From the part of the body which ascends to the centre of the cellj about a sixth from the posterior end of the polypus, a Dr Grant on the Structure and Nature qf'Flustrae. 115 fleshy tubular process is sent off, which terminates in a large oblong fleshy sac, generally filled with some opaque matter. As this process is nearly as thick as the part of the body from which it comes, the polypus appears bifur- cated at its shut extremity. At the pointy of the bifurcation, the polypus ap- pears to be somehow connected with the centre of the posterior wall of the cell ; and every other part of the polypus, excepting this, moves freely in the cavity of the cell. The last remains of the dead polypi are found at this point of the cell, with vessels radiating from them. From the point of the bifur- cation to the entrance of the round sac, we perceive a kind of circulation con- tinually going on within the fleshy tube ; it consists in the constant revolu- tion of the particles of some fluid, probably caused by cilise disposed on the internal surface of the canal. The tapering or posterior part of the body of the polypus sometimes exhibits small portions of digested matter passing to and fro within it. The round shut sac containing the opaque yellow matter moves often, and quite freely, within the cell ; and it appears to belong rather to the digestion than to the generation of this animal, as it communicates directly with the digestive canal of the polypus, and it will be seen that the polypus of this animal has as little to do with the formation and growth of the ova, as it has in other zoophytes. In place of finding the polypi alive only near the margins of the branches, as Lcefling, Lamark, and others have maintained, we find them almost equally abundant and healthy in every part, from the base to the apex, and from the centre to the margins of the branches. The cells along the sides of the branches , are generally imperfectly formed, and contain no polypi ; their outer calcareous margin is for the most part wanting. The last two or three rows of cells, at the extremities of the branches, are thin, soft, gelatinous, and transparent ; and contain young polypi so imperfectly formed, that it is quite obvious that the extreme row could not have been generated by the polypi of the second row, after their arriving at maturity. The extreme margin of the branches always presents a smooth and even outline from the equal growth of every point of the axis, and never exhibits the notched or serrated line, which would be produced by the unequal developement of a terminal row of gemmules. The cells newly formed in the soft gelatinous terminations of the branches, have the same size and form as the oldest cells, so that we find at the extremities of the branches a row of imperfect cells in every stage of their formation. Some of these imperfect cells do not yet exhibit the rudiments of a polypus ; some a little further ad- vanced exhibit an opaque spot at the base, from which tentacula at length shoot cut like buds ; other cells, more nearly completed, present the young polypus inclosed in a long shut sac, tapering upwards to the point where the aperture of the cell is afterwards formed ; and others, which only want their upper arched wall, contain perfectly formed polypi, ca- pable of projecting their tentacula and head through the opening of the cell ; their parts are very transparent and colourless, and their globular appendix appears empty. The sides of the cells form continuous, ramified, and waved lines, from the base to the apex of the branches ; and the growth of the axis in this, as in every other zoophyte, precedes the growth and formation of the polypi. The ax%s of this zoophyte consists in the parietes of the cells, and it H 2 116 Dr Grant on the Structure and Nature ofFlustra. presents, in every stage of its growth, a regvilar form, and exact proportions in all its parts ; it is composed of a continuous fleshy and calcareous substance, like the outer part of the axis of the gorgonia, which the beautiful experi- ments of Cavolini have shewn to be by far the most highly organised part of that zoophyte, possessing distinct irritability, and secreting the horny layers of the central part of the axis. The polypi are most intimately and inse- parably connected with the axis by three parts of their body, and are only digestive sacs or mouths developed by the axis, as in all other zoophytes, for the nourishment of the general mass. By the axis of a zoophyte, I under- stand every part of the body excepting the polypi, whether of a calcareous, homy, or fleshy nature. The exact mathematical arrangement and forms of the cells of Flustrce^ is incompatible with their existence, as separate and inde- pendent beings, but is quite analogous to what we are accustomed to observe in CellaricBy Sertularics, PlumularicB, and many other well known compound animals. Although the ova of Flustrrc have been often observed, no one appears to have hitherto examined either their mode of formation within the cells, or their nu)de of developement after expulsion, so as to determine the real nature of these glo- bular bodies, and the erroneous conjectures of naturalists respecting them have greatly perplexed the history of this genus. The ova of the F. carbasea make their first appearance as a small yellow point, a little below the aper- ture of the cell, and behind the body of the polypus ; they are unconnected with the polypus, and appear to be produced by the posterior wall of the cell, in the same manner as the axis, or common connecting substance of the po- lypi, produces them in other zoophytes. In this rudimentary state they are found in the same cells with the healthy polypi, but, before they arrive at maturity, the polypi of such cells perish and disappear, leaving the entire ca- vity for the developement of the ovum. There are never more than one ovum in a cell, and it occupies about a third of the cavity, when full grown and ready to escape. When first visible it has a round or slightly oblong and re- gular form ; when mature, it is ovate with the small end next the aperture of the cell. The ova do not appear in all the cells at one time, nor is there any discernible order as to the particular cells which produce ova, or the part of the branch which contains them. Ceils containing ova are found alike on every part of the branches, from the base to within two or three rows from the apex, occupied only by young polypi. Sometimes we find half a dozen or a dozen of contiguous cells all containing ova, sometimes two or three on- ly ; and often such cells occur singly, at short and irregular distances from each other. We find the ova, in all stages of maturity, on the same branch at the same time ; and we seldom jbserve a specimen of the F. carbasea^ du- ring the months of February, March and April, which does not contain nu- merous ova. The ova have a lively yellow colour ; and when they occur abundantly on a specimen or a part of a branch, they cause it to exhibit the same lively hue, which is very different from the dull spotted brown appear- ance which the branches present at other seasons. Cells are often observed on different parts of the branches, containing neither polypi nor ova ; but the fewness of these, and the great number of cells still containing only polypi at the season of generation, render it probable that polypi are regenerated in the empty cells after the escape of the ova. In the empty cells from which the Dr Grant on the Structure and Nature ofFlustra. 117 ova have escaped, we frequently observe a few remains of the former polypus lying at the place where the body of the polypus bifurcated, and where the principal connection seems to exist between the polypus and the axis ; we likewise perceive numerous monades and other animalcules busily employed in consuming the remains of the dead polypus. The ovum, even before ar- riving at maturity, exhibits very obvious signs of irritability, frequently con- tracting different parts of its surface, and shrinking backwards in its cell ; the ciliae on its surface are likewise observed in rapid motion within the cell, as in the ciliated ova of other zoophytes. The mature ova are often found with their small end projecting from the opening of the cells, and their final escape is aided by the incessant vibrations of the ciliae covering their surface, by the ova contracting themselves in their lateral direction, by the waves agitating the branches of the flustra, and by the same incomprehensible laws which re- gulate the formation and growth of the ova, and the whole economy of this zoophyte. When the ova of the F. carbasea have escaped from the cells, and are ob- served swimming to and fro in a watch-glass with sea-water under the micro- scope, we perceive that the small end which first escaped from the cell is car- ried foremost, and the broad posterior end has now expanded into a broad cir- cular zone, giving a flatness to that extremity. The cilise are longest in the centre of the broad extremity as in other ova *, and become gradually smaller towards the narrow end. When torn and examined on a plate of glass under the microscope, the whole ovum appears composed of very minute gelatinous granules or monade-like bodies, without any external capsule or internal cal- careous matter. They are very irritable, and are frequently observed to con- tract the circular margin of their broad extremity, and to stop suddenly in their course when swimming ; they swim with a gentle gliding motion, often appear stationary, revolving rapidly round their long axis, with their broad end uppermost ; and they bound straight forward, or in circles, without any other apparent object, than to keep themselves afloat till they find themselves in a favourable situation for fixing and assuming the perfect state. The time of their remaining in this free and moving state varies from a few hours to about three days, according to circumstances. When placed in a watch- glass, immersed in a vessel of pure sea-water recent from the sea, and kept in the cavity of the glass, by a careful management, they generally fix within the space of six hours from the time of their escape from the cells. The slight- est agitation when they are about to fix, causes them to recommence, and con- tinue for some time, their gliding motions ; and if again separated from the surface of the glass when they have begun to fix, they generally remain free, and perish. During the process of fixing, they exhibit no peculiar appearance or change of form"; they appear simply to lie on their side, and the cilise con- tinue to vibrate over the whole surface, producing a constant current in the water, and clearing the space immediately surrounding the ovum ; on agita- ting gently the water, however, we now find that it can no longer move from its place. I have found the ova of the F. carbasea remain three days in this fixed recumbent position without undergoing any perceptible change of form, * See Edinburgh New Philosophical Journal, December 1826, p. 129. 118 Dr Grant on the Structure and Nature of Flustrce. and without relenting the motions of the ciliae on their surface. About this time from their fixing, the ciliae cease to move, and disappear, first at a parti- cular part of the surface, and in the space of twenty- four hours longer they cease their motions over the whole surface of the ova. In about two days af- ter the ciliae have ceased to move, the ovum appears more swelled, the sur- rounding margin becomes more transparent and colourless, and the yellow matter, which appeared to compose the whole ovum, is now confined to the central part. As the ovum enlarges and loses its bright yellow colour, it as- sumes a form more nearly resembling that of a cell, and acquires a light grey or whitish colour, with increased transparency in every part, excepting the yellow central spot, which gradually diminishes in size. A delicate white opaque line makes its appearance near the outer margin of the transparent ovum, and passing round its whole circumference; this white line has the form and nearly the size of a full-grown cell, and is the rudiment of the lateral cal- careous wall of the cell. Towards the base of this rudimentary cell, we per- ceive the gelatinous interior become more consistent and opaque at a particu- lar point; from this dull spot within the cell we soon perceive short straight tentacula begin to bud out, extending upwards in the direction of the future aperture. The gelatinous spot from which the tentacula originated, assumes the vermiform appearance of the body of a polypus, and we distinctly perceive the bundles of fibres which connect its head with the base of the cell. The aperture of the cell, in form of a crescentic valve, is perceptible before the in- fant polypus extends so high in the cell, and is not a mere perforation made by the polypus, as Lamouroux and some others have supposed. The struc- ture of the polypus is perfected within a distinct shut capsule, and when we first detect it protruding from the cell, it possesses all the parts of an adult polypus, and vibrates the cilise of its tentacula with as much regularity and velocity as at any future period. Before the polypus is capable of ])rotruding from the aperture of the first cell, we perceive the upper part of that cell ex- tending outward to form the rudiment of a second, in the same manner as we observe at the tips of the branches in adult specimens, ( To be concluded in next Number, \ Some Remarks an the Temperature and Climate of Shetland. By William Scott, A. M., of the Royal Military College at Sandhurst. — Communicated by the Author. xVt the request of Professor Jameson, I drew up a set of Tables, exhibiting the temperature, wind, and weather, during part of the years 1824 and 1825, as observed by myself at Bel- mont, in the island of Unst, Shetland, in Long. 0° 51' West, Lat. 60° 42' North, the thermometer being elevated QQ.^Z feet above the level of the sea, and 300 yards distant from it. These tables, however, prove too bulky for insertion in the Philoso- Mr Scott o?i the Temperature of ' Shetland. 119 phical Journal, and therefore the following only are submitted to the public attention : — Table of the Mean Morning- and Evening- Observations Jbr twelve Months y from June 1824. Times of Registra- tion. 1824. 1825. Mean of the Morning and Evening Observa- tions. June July Aug. Sept. Oct. Nov. Dec. 36°7' 37 3 Jan. Feb. Mar. April May 7iA. M. 84p. m. 52°3' 49 3 54°5' 51 56°0' 53 51°2' 50 2 43''3' 43 4 39°0' 39 40*2' 40 4 38"7' 38 8 40°7' 40 1 43»8' 41 4 47°3' 45 1 45"'3 44 1 Mean temperature of the twelve months, commencing June 1824, 4407 It appears almost unnecessary to explain how this result has been obtained. It may be done, however, in very few words: The temperature was registered at half-past seven o'clock every morning, and half-past eight every evening. At the end of a month, the morning observations were collected into one sum, the evening into another, and each divided by the correspond- ing number of observations. Thus the monthly mean tempera- ture, at these hours, was obtained ; while that of the year was, by a similar process, deduced from the mean observations of twelve months. The times of registration were those proposed in 1823, by a committee of the Royal Society of Edinburgh, who considered the temperature of 7-J a.m., and 8^ p.m., as affording, several- ly, a near approximation to the mean temperature of the day. From the present observations, it appears, that, in the months of June, July, and August, the morning mean exceeds the evening by about 3° ; in September by V ; that in Oc- tober and November they are equal; while in December the evening exceeds the morning by 6' ; in January by 9! ; in February by 1' ; after which the morning means again exceed the evening, the difference increasing as the season advances. The point at which the morning and evening mean tempera- tures become equal, seems to be about 39° or 40° ; and if th*j general winter range fell as much below this point as the sum- mer rises above it, we should probably find the morning mean as much less than the evening in winter, as it exceeds it in summer, 120 Mr Scott 071 the Temperature of Shetland. and the annual mean temperature of the morning not greater than that of the evening. In the instance before us, the form- er exceeds the latter by 1 ° 9f. The midday mean forms no element of the above table. It is given here to shew the range only of the thermometer ; and^ this, it will be observed, is, in steady weather, very limited. In 1824, the thermometer reached its highest point, QB° 8', on the 2d of September ; and the lowest, (at least the lowest I ob- served), 24° 8' at 8i P.M. of the 16th December. At 9i a.m., 16th June 1825, it stood at 67°; by noon it had sunk to Qiot" ; and the wind, which was at this time southerly, having changed to the north, it fell, before 8i p.m. of the 17th, to 44° 6' ; and at noon of the 18th and 19th, rose no higher than 47° ; 67° was the highest point I observed it reach during my stay of 15 months. The proximity of the sea to every part of the country, has doubtless a considerable effect in modifying the temperature ; and to this it is unquestionably owing that Shetland, near the ex- tremity of the north temperate zone, has warmer winters than regions situated 10° nearer the Equator. To this cause, also, are to be attributed the moisture of the atmosphere, the almost perpetual obscuration of the heavens with clouds, and the fre- quent fogs which prevail in the country. From the observations of a single year, it would be impossible to form a correct estimate of the average number of fair and rainy days, or of the quantity of rain, snow, &c. that falls an- nually ; and as this register contains all the facts I possess, I think it better to leave those who may see it to form their own conclusions, th?in to hazard any of mine on the subject.* Thunder is of rare occurrence, and is heard more frequently during the storms of winter than in the summer months. I hap- pened to hear it but once while in the country. The aurora borealis, I was told, is not now so frequently seen as it was fifteen or twenty years ago ; the brightness of its co- lours, the hght it gives out, and the rapidity of its corruscations, are also said to have diminished. Being desirous of observing this beautiful phenomenon, I looked for it generally in nights that were favourable to its appearance. I, however, saw it only • We hope to be able to find room for the Register in our next Number. Mr Scott on the Temperature of Shetland. 121 a few times, when it always appeared very faint, and had little sensible motion. Connected with the subject of meteorology, I may mention a remarkable phenomenon which fell under my observation when in Shetland, and of which I now regret I did not keep a register. In a room on the ground-floor of the house of Belmont, is a wall-press, or cupboard, on a shelf of which wine-glasses and tumblers are usually placed, in an inverted position. These glasses are at times heard to emit a sound similar to what might be produced by striking their outsides gently with a piece of metal (as the edge of a knife), or by raising their edges a little, and suffering them again to fall sharply on the shelf. This tinkling or ringing sound, which is heard in moderate, also in per- fectly calm, weather, is uniformly the prognosticator of a gale of wind; and the confidence reposed in its fidelity is such, that boats, corn-stacks, and other things exposed to injury from wind, are at its warning either properly secured or placed under cover. The quarter from which the storm is to come seems to have no effect in producing this phenomenon, the sound being heard equally before a southerly as a northerly, easterly, or westerly gale. The degree, however, of its intensity is proportioned to the violence of the coming storm ; the sound being louder and more frequently repeated before very violent than before less violent gales. It is heard sometimes a longer, sometimes a shorter, time before the commencement of a storm, but general- ly several hours ; and the tinkling is repeated at irregular in- tervals till the storm begin, and also sometimes during its conti- nuance. Notwithstanding of patient investigation, I discovered nothing peculiar about the press, which is formed in the wall, and lined with planed fir plank, nor any agitation of the air near it, nor could I ever observe the glasses in motion, though I often watch- ed them closely while ringing. I observed only that their tink- ling was louder, and also more frequent, when the door of the room was shut than when it was open. The sound, I am satisfied, was not produced by any agitation of the shelf supporting the glasses, nor by a current of air shak- ing the glasses themselves ; the only alternative, then, appears to be that it proceeded from sudden contraction or expansion of 122 Mr Scott mi the Temperature of' Shetland. the glass, producing vibration, and thence sound, — the cause of which expansion or contraction may perhaps be (I hazard the hypothesis as merely probable) a particular state of the electric fluid before a storm. This, however, is left for the considera- tion of those more conversant with natural phenomena than my- self. The house of Belmont stands about 55 feet above the level of the sea, on the top of a gentle eminence, having the sea on the south and south-west ; a small fresh-water lake on the west, ano- ther on the north, and on the east and north-east a brook, in winter forming a small marsh, with pretty high ground rising from it. The site of the house is dry. The annexed is a ground-plan of that part of the house con- taining the room i n which this phenome- non is observed, a is the front door •, b the lobby ; c the room ; d the entrance into it ; P the press ; e a window ; jf the fire-place ; and g a door leading to another room behind c. The shell of the house is built of gneiss ; the partition P, d, of brick ; the walls of room c are plastered, painted in oil, and pannelled below the surbase. SW.i^9. On the History and Cmutitution of Benefit or Friendly Societies. By Mr W. Fraser, Edinburgh. [This communication we consider of gi-eat importance at this time, when the distressed state of the working classes, and the accompany- ing increase of disease, so much and so justly engage the attention of the public. It is also a subject which cannot fail to interest the political economist.— Edit.] Xjenefit or Friendly Societies are associations for the pur- poses of Health and Life Assurance. Health Assurance provides Mr W, Fraser on Benefit or Friendly Societies. 123 for pecuniary benefits during professional incapacity, arising from sickness, accidents, or other bodily infirmity ; and Life Assurance makes provision for old age, sums payable at death, and annuities to widows or other nominees. Such at least comprise all the usual transactions of Friendly Societies. These institutions are of great antiquity, and those in Britain are ascertained to have originated with the Saxon Gilds or Cor- porations, whose objects were chiefly to supply funds for relief to their members in times of pecuniary or bodily distress, for pro- tection from personal injury, and convivial enjoyments. Sir Fre- derick Eden, in his work on the Poor, has given the Rules of two of these Gilds or Societies established at Cambridge and Exeter, previous to the Norman Conquest, and which, so far as relates to benefits during sickness and at death, run almost in the same terms as the Regulations of Friendly Societies now in use. The first institution, however, under this appellation, of which any record appears to have been obtained, was the Friendly Society of Newcastle-upon-Tyne, founded only in 1719. Towards the commencement of the late King''s reign, such societies began to multiply rapidly in number. At this period Friendly Societies were merely connected with incor- porated or such other trades as were chiefly confined to towns, and for the benefit of their decayed members only. Sickness or infirmity did not alone entitle to benefit, unless when coupled with extreme indigence, and even this limited re- lief was restricted and regulated, according to the amount of the funds at the time, and the opinion the society or its managers might form of the wants of the applicants. The advantages, however, derived from them, even upon this limited scale, were soon observed and duly appreciated by other classes of the com- munity ; and numerous societies of all ranks and occupations Avere, in a short time, formed in almost every town and consi- derable village in the kingdom. From being charitable associa- tions, too, they have now assumed the more respectable character of mutual assurance societies, where every individual is entitled to claim as his right the stipulated allowances ; and hence the idea of charity, so repugnant to every independent mind, can no longer be associated with these copartneries. Institutions for Life and Health Assurance, have been for 124 Mr W. Fraser mi the History and Constitution of some time divided into two great classes, — the one, resorted to in the higher ranks, termed Life Assurance Companies, but not affording benefits during sickness ; the other hitherto confined to the working classes, chiefly for these benefits, and still known by the name of Benefit or Friendly Societies *. But the former class, although their capital and transactions are to a very great amount, embrace a small proportion of the population, when compared with the latter. It is impossible to ascertain exactly the number of either Friendly Societies or their members ; but from 1793 to 1820, the regulations of upwards of 200 societies had been con- firmed by the Justices of the Peace for Aberdeenshire alone. According to the Parliamentary returns in 1802, the Friendly Societies established in England and Wales were no fewer than 9,672 in number ; and in the Returns to Parliament in 1815, the members of Friendly Societies were enumerated at 925,429, or about one-thirteenth part of the population. But even this must have been far below the actual numbers, because of the difficulty of obtaining accurate returns, owing to the reluctance which has hitherto existed among these institutions to give pub- licity to their transactions : And as in neither of these returns was Scotland included, where Friendly Societies are considered to be proportionately still more numerous than in England, the total number of their members may be supposed to be pretty accurately given in the Edinburgh Review for January 1820, in which they are estimated to include one-eighth part of the whole population of the Empire, or about 1,610,571 members. • The Medical Provident Institution of Scotland^ formed last year, and now in full operation, is the first association in this quarter of the island, which has extended the benefits to the middle ranks of society. The most distin- guishing feature of their scheme is Health Assurance, by which they are to pay certain sums to their members while labouring under professional disa- bility, arising from sickness or accidents, in middle age ; combined with a life-annuity after 60. They also grant annuities for old age, and to the wi- dows or nominees of members, unconnected with assurance on Health. As there is no proprietary, the whole funds are of course available to the mem- bers themselves, under deduction of the charges of the most economical management. The association is at present confined to the Medical Profes- sion, but without making this an essential article of their constitution. It is, we understand, likely to become very popular with this numerous and highly respectable body, which is almost the only one in the country that has no annuity institution peculiarly ajjpropriated to its members. — Edit. Benefit or Friendly Societies. 125 Of the immense benefits afforded by Friendly Societies, some idea may be formed from the returns given in to the Highland Society of Scotland in 1822, from 79 societies in various parts of Scotland. By those returns, it appears, that these few societies, comprising not above 10^000 members annually, had alone actually paid for no less than 132,964 weeks of sickness and infirmity, in a medium period of 13 years only, or at the rate of 10,228 weeks yearly. The total sum, therefore, paid by them, during these 13 years, at the low calculation of 5s. per week, would amount to L. 33,241, or L. 2,557 annually ; and if the same rate be taken for the whole societies in Britain, it will be found that their distribution will amount to L. 411,823 annually for sickness benefit alone. No returns of the mortality among Friendly Society mem- bers have been obtained ; but as these societies pay sums upon the death both of members and their wives, and supposing only two-thirds of the members to be married, the number of mem- bers and their wives insured for this benefit will be 2,684,285 yearly. Taking their average age at 40 (40.3 being that of the male members of the 79 Scotch societies above referred to), and their annual mortality at 76 in 3635, which is that given by the Northampton tables, the number of deaths occurring yearly will be 56,123 ; the payments for which, at the rate of L. 5 for each, will be L. 280,615 annually.* Hence it will be seen, that the distributions for sickness and deaths alone amount to L. 692,438 in the year ; but, as there are several other benefits granted by many Friendly So- cieties, such as widows^ annuities, allowances to orphans, &c., their total annual payments may be estimated at nearly a million Sterling ! When, therefore, the very great relief thus afforded both to parishes and individuals is considered. Friendly Societies are • As each society has hitherto limited its benefits to a certain uniform sum for all the members, it frequently became necessary for a person to be in more societies than one. Hence the actual number of different individuals ^d deaths occurring yearly in Friendly Societies, would not be so great as that stated in the text ; but this circumstance does not of course diminish the esti- mated amount of distributions. 126 Mr W. Fraser oit the History/ and Constitution of' surely well entitled to be ranked among the most beneficial in- stitutions of the country, and deservedly to claim the attention both of philanthropists and statesmen. It will scarcely be credited, however, that of late years much hostility has been shewn to Friendly Societies, and by none more strongly than by the patrons of Savings Banks. These latter institutions are certainly well calculated for many useful purposes ; but it must still be evident that they can bear no com- parison with the former, or supersede the use of them. On this subject it has been justly remarked by a late writer, " Will the advocates for Savings Banks be easily persuaded to save their annual premiums, instead of insuring their houses against fire ? Certainly not ; yet they recommend the mechanic to place his money in the bank, to provide against sickness and old age, whilst they know that sickness, like fire, though somewhat slower in its operations, may in a short time exhaust the savings of fifty years, and like fire, too, may come suddenly before the ^rst year expires. The best friends of the working classes will always entreat them to provide against the manifold wants of sickness and old age, by means of respectable and well conducted Benefit Societies, the payments to which ought to form a part of their current and positive expences. To those who have any thing to spare after this, a savings bank may be useful ; the necessities of sickness and old age being first secured by these societies, the mechanic and labourer, through the medium of the bank, may add to their comfort ; but no individual either be- friends his neighbour or his country, by enjoining a reliance upon individual savings, as a security against casualties which may overtake a man in an hour, and in a few months sweep away the savings of a whole life.*" In short, the best and in- deed the only safe way of providing against any contingency is by uniting with others ; and hence institutions, such as Friendly Societies, when properly conducted, can alone afford the means of providing for the vicissitudes of infirmity and disease^ at the same time that they, in conjunction with Savings Banks, en- ■ " Considerations on the necessity of appointing a Board of Commissioners for the Encouragement and Protection of Friendly Societies." London, 1824. Benefit or Frkndlij Societies. 127 courage those habits of mdiistry and economy, which are the only sure sources of happiness and independence. Friendly Societies of France, From several interesting Reports in the Transactions of the Philanthropic Society of Paris, it appears that Friendly Societies are comparatively but recent institutions in France. They are stated to have there originated with religious bodies, upon whose dissolution the box and funds for the support of the sick and aged, were preserved and supported by such of the members as continued to reside near to each other. When these societies became thus independent of the church, entrants of various occupations were afterwards admitted, and several new societies were formed for the same purposes. Their progress, however, seems to have been for a long time ex- tremely slow ; the first of which there is any account having been instituted in 1694, and but other three from that date till 1789, when three more were estabUshed at Paris. In 1805 they only amounted to twenty-six, but, in the beginning of that year, the Philanthropic Society of Paris directed its attention to them. This body appointed a Committee to inquire into the origin, number, and regulations of those then in that city, as also to ascertain what measures should be adopted for their more general encouragement. Upon their Report, 100 francs were awarded to one of the societies established in 1789; and pre- miums of from 100 to 200 francs were offered to every society which should be afterwards instituted, so soon as they had ob- tained sixty members. It was at the same time intimated in all the public journals, that copies of rules considered well adapted for Friendly Societies in general, would be furnished gratis to all those who might choose to apply for them. This laudable example of the Philanthropic Society was soon followed by a similar society in Marseilles, and through their exertions no less than forty Friendly Societies v/ere, in the course of three years, established in that city. To such societies Government after- wards also extended its encouragement ; and in May 1821, on the occasion of the christening of the Duke of Bordeaux, the 128 Mr W. Fraser on the History and Constitution of King announced that premiums would be given to the Friendly Societies in Paris, in proportion to the sums which they them- selves had deposited ; and 50,000 francs were distributed ac- cordingly, through the medium of the Philanthropic Society. In June 1824, there were 164 Friendly Societies in Paris, but they are all upon a very limited scale, the whole comprising only 1 4,700 members, with a total capital of 821,1 98 francs, (L.34,216 Sterling, or about L. 2 : 6 : 9 per member)— -To the Philanthro- pic Society, then, as well as to the indefatigable exertions of M. Everat, printer in Paris, one of their Committee, is chiefly to be ascribed the establishment of Friendly Societies in France. Legislative Enactments, and Inquiries. In 1772, Friendly Societies attracted the attention of the Bri- tish Legislature ; but although they were frequently under the consideration of Parliament in the course of the twenty years fol- lowing, no statutory regulation of them took place until the year 1793, when a bill was introduced by the late George Rose, Esq. and passed into a law. During the subsequent twenty-five years^ the subject of Friendly Societies came also frequently before Parliament ; and the provisions of the original act were greatly extended, by no less than seven different statutes. These acts, after reciting that " the protection and encouragement of Friend- ly Societies, for securing, by voluntary subscription of the mem- bers thereof, separate funds for the mutual relief and mainte- nance of the said members, in sickness, old age, and infirmity, is likely to be attended with very beneficial eff'ects, by promot- ing the happiness of individuals, and, at the same time, dimi- nishing the public burdens,"" enact, that it shall be lawful for any number of persons to form themselves into such societies ; and, upon their rules being exhibited to the Justices of the Peace, and confirmed by them at a Quarter Sessions as lawful, they shall become entitled to many important privileges. The prin- cipal of these are as follows : No stamp-duty is exigible for any bonds required from their Treasurers, and upon these bonds being lodged with the Clerk of the Peace, he may, in case of forfeiture, proceed against such office-bearers in his own name, for the use of the Society ; — if any Benefit or Friendly Societies. 129 office-bearer, or other person entrusted with their funds, dying or becoming bankrupt, the claim of the society is preferable to all other debts ; all disputes between their members or representa- tives, and the society, are determinable by the Justices without appeal ; but if their regulations appoint these matters to be set- tled by arbitration, the decision of the arbiters is declared to be final ; no fees whatever are exigible by the officers of the Jus- tices for the enrolment of their regulations ; and their cases are to be decided in a summary manner. By these acts it is also declared, that the usual committee of management must not consist of less than eleven in number, and that the books shall be at all times open for the inspection of members,— that no rule or regulation once confirmed can be af- terwards altered, nor any new regulation adopted, but by a ge- neral meeting of the members of such society, or by a commit- tee specially appointed for that purpose, convened by pubUc no- tice in writing by the Secretary — that the proposed alterations or additions shall have been read at the two usual meetings of the society or committee previous to calling said general or com- mittee meetings, — that three-fourths of the members then pre- sent shall have agreed to the measure^ and that such altera- tions or additions be finally submitted to the Justices for their approval as before. Lastly, it is declared, that no society can be dissolved, or its funds diverted from their original purposes, without the concurrence oi five-sixths of its whole members, as well as with the consent of all those receiving, or entitled to re- ceive, aid from its funds at the time. Such are the more important enactments previous to the year 1819, when Mr Courtenay introduced a bill for supplying a most material defect in all the previous statutes. This was the want of sufficient security against error in the original constitu- tion of their schemes, in adapting the contributions and benefits to each other. Previously the rules of every society, which mere- ly professed to provide for sickness or old age, and were directed to no unlawful purposes, fell necessarily to be sanctioned ; but by this latter statute it was also required, that the " tables and rules are such as have been approved by two persons at the least, known to be professional actuaries, or persons skilled in calculation, as fit and proper according to the most correct cal- APRIL JUNE 1827. I 130 Mr W. Fraser on the History and Constitution of culation of which the case will admit." This act also greatly enlarges the provisions of former acts, by extending the privi- leges of tnutual assurance to " any natural state of contingency, whereof the occurrence is susceptible of calculation by way of average,*" and allows societies to invest "their funds in the Bank of England at 44 per cent, interest, under the regulations ap- plicable to Savings Banks. This statute, however, did not ex- tend to Scotland. But notwithstanding all these salutary enactments, their ope- ration, both in England and Scotland, has been but partial and imperfect. Till very lately no data existed by which the neces- sary payments for particular rates of benefit during sickness could be satisfactorily ascertained, and those for other benefits were seldom attended to. The Justices, too, v/ith very few ex- ceptions, usually sanctioned the rules in whatever shape they were presented, and decided Friendly Societies'* causes with little or no regard to their regulations. Hence all the labours and enact- ments of the Legislature remained either unknown or unheed- ed, and these institutions were consequently led into error, liti- gation, and ruin. These evils, however, and the very great utility of such so- cieties, tended to excite a keen interest in their favour. Several patriotic individuals endeavoured to procure data for establishing their schemes upon a more secure basis ; but nothing effectual was accomplished, until, upon the motion of Mr Charles Oliphant, the Highland Society, in 1820, instituted their inquiry into the rate of sickness among Friendly Societies in Scotland, and published the result in a most valuable Report in 1824 *. Mr Courtenay also brought the subject again before Parliament in 1825, when a Se- lect Committee of the House of Commons was appointed to take into consideration the present statutes, and to make such investi- gations into the rate of sickness, mortality, and other matters, as might be deemed expedient. Many highly respectable and intelligent witnesses were accordingly exammed, much valuable information obtained, and the result of the whole embodied in a Report, which has not perhaps been exceeded in interest and utility, by any Parliamentary paper of late years. This report " Report on Frieiwllj or Benefit Societies, drawn up by a Committee of the Highland Society of Scotland. A. Constable & Co. Edin. 1824. Price 6s. Benefit or Friendly Societies. 181 lias not yet been followed up by any alteration of the existing acts, but the Committee having been this session of Parliament (1827) reappointed, it is to be presumed that they will speedily undergo a revision and amendment. It may here be observed, however, that Friendly Societies have always regarded legislative interference with the utmost jealousy and alarm ; but that this arose from misapprehen- sion, and from the benevolent objects being misunderstood, the following extract from the Parliamentary Report above alluded to, will sufficiently demonstrate : " Your Commit- tee take this opportunity of observing, that it is in their opi- nion, only in consideration of the advantages conferred by the law, that any restrictive interference can be justified with voluntary associations, established for lawful and innocent pur- poses. They wish this principle to be kept in view, in consi- dering as well the history of the law, as the suggestions which they shall make for amending it. It is true that the restrictions which the act (1793) imposes are, without exception, calculated for the benefit and security of individuals ; nevertheless it is for the individuals themselves to determine whether to adopt the provisions of the statute which offers at the same time regula- tion and privilege, or to remain perfectly unfettered by any thing but their own will, or the common and more ancient law against fraud and embezzlement. For your Committee appre- hend, that although the act of 1793 appears to begin by ren- dering lawful the institution of Friendly Societies, there neither was at that time, nor is now, any law or statute which deprives the King's subjects of the right of associating themselves for mu- tual support.'' This Report, and that of the Highland Society of Scotland, will be more particularly referred to in the sequel. There are no legislative enactments regarding Friendly So- cieties in France ; but their rules must be at first submitted to, and approved of by, the Prefect of Police, and notice thereafter given to him some days previous to each meeting. Such a detail of the Parliamentary proceedings and enactments has been deemed necessary, with the view of directing to them the special attention both of Justices of the Peace and of Friendly Societies. As already mentioned, the rules of almost every society bear evidence, that, in the first place, the statutes are either al- most wholly useless, or at all events seldom attended to ; and, in I 2 132 Mr W. Fraser on the History and Constitution of the next place, according to Mr Gavin Burns, in his able pam- phlet on the Principles and Management of Friendly Societies in Scotland, " it is a known fact, that many decisions have been given, in cases of society disputes, in our inferior courts of jus- tice, in which, from motives of lenity or humanity to a com- plaining member, this principle' (of adhering to the rules) has been departed from ; and although he may have failed in performing his part of the stipulations mutually agreed on, in many cases has been adjudged to receive the benefit of the funds the same as if he had fulfilled them f but such " lenity or humanity, however well meant, when shewn to one member at the expence of strict justice, may, by injuring the general interests of the society, become cruelty to numbers, who may be thereby de- prived of that relief in sickness and old age to which they had a just claim.*" Thus are societies deprived of the many bene- fits and protection which these acts are intended to afford ; whereas were their provisions duly acted on, the interests both of societies collectively, and of their members individually, would be more effectually preserved. It is true, indeed, that, in Scotland, the Justices have no power, by the existing statutes, to alter or impose upon societies any law whatever, provided their rules be merely consistent with the common law of the land ; but still a great deal of good might be done, were societies merely made aware of their errors before their regulations were passed into a law. In this respect, great praise is certainly due to the Justices of Forfarshire, who have lately drawn up and printed a statement explanatory of the principles on which societies can alone be conducted with safety and advantage, and copies of which are issued to all so- cieties applying for sanction. It is understood that the Justices of Peace for the county of Edinburgh are now also in the habit of recommending a similar publication* to their attention. By these and similar measures, a very beneficial change cannot fail to be soon effected in the principles and management of Friend- ly Societies; for it cannot be doubted, that to irregularity hi- therto in the proceedings of societies themselves, must certainly • Remarks on the Constitution and Errors of Friendly Societies, with the Leiws of the Edinburgh Compositors' Society, instituted upon the principles rccom. mended by the Highland Society of Scotland, Oliver and Boyd, Edinburgh, &c. Price Is. 6d. Benefit or Friendly Societies. 133 be ascribed much of the Htigation, and the apparently inconsist- ent decisions, which have so frequently occurred. Imperjections in th(f Schemes of Friendly Societies, As the funds of Friendly Societies principally arise from a cer- tain sum paid by members at entry, and an annual contribution so long as they remain in the society ; while the disbursements consist of allowances for sickness or inability to work, and for the funerals of members, their wives or widows, it is evident that no society can be permanent, unless the contributions with the accruing interest, be in just proportion to the allowances. But it is much to be regretted that institutions so numerous and useful, should have been so very generally founded on miscalcu- lation, which formed the chief operating cause of their own disso- lution. This is the less surprising, however, when it is recollect- ed, that it is only of late years that the system of Life Assurance has been brought to maturity, even in the higher, and conse- quently better educated, part of the community. Dr Price has shewn that, in his time. Life Assurance schemes went to ruin, in consequence of having been founded on erroneous computations ; and the Scotch Ministers^ Widows' Fund, established about the middle of last century, appears to have been one of the first in- stitutions founded upon just principles. Besides, an accurate knowledge of the rate of' mortality was all that was wanted for properly conducting Life Assurance Schemes, but for those of Friendly Societies, the rate of sickness was also required. Of this latter requisite, however, no accurate information, till late- ly, had ever been obtained, or indeed thought of ; and hence their contributions and allowances were necessarily fixed at ran- dom, and left to be raised or lowered as circumstances might require. But to some even of the best informed, this mode of man- agement seemed to be sufficient, and the only one capable of be- ing adopted ; for, in the article on Benefit Societies, in the Sup- plement to the Encyclopaedia Britannica, it is stated, " that it is a great advantage of benefit clubs not to require much in the way of funds. If the calculations are correct, the outgoings within an average period will balance the incomings ; and all that is requisite in the way of fund, is a small sum to meet acci- 134 Mr W. Fraser ori the History and Constitution qf dental inequalities. When this fund is lost, it is not much that is lost ; if a small additional sum is subscribed by each member, or, instead of this, if the allowances are suspended, or only reduced, the society is placed in its former situa- tion.*" Not the least hint, however, is given by this writer, of the way by which correct calculations may be obtained ; and how he could suppose that, even were such calculations once procured, a society could afterwards act upon them with- out accumulating a capital, it is certainly very difficult to con-^ ceive, — for, as the rate of the yearly contribution continues the same for life, while the rate of sickness (or disability) increases yearly from youth to age, a society must either always be pos- sessed of a capital in proportion to the number and ages of its members, or be unable to meet the heavy demands of old age ; the sickness between 60 and 70 years of age being at least tenfold what it is between 20 and 30. Mr Finlayson, however, the actuary for the National Debt Office, when first examined, in 1825, before the Committee of the House of Commons, gave it as his opinion, that " there is a constant and given mortality operating upon life, but no such law exists as to sickness." He therefore, likewise, " when applied to by the members of Friendly Societies, advised that which appeared to be quite suf- ficient, without any such calculations. I have advised them to separate their project into two parts, the one embracing that which was susceptible of calculation, the other that which was not ; it so happens, that sickness^ and the other events to which I have alluded, are of immediate and temporary occurrence, and may be provided for by immediate means. Not so the other benefits, which usually require a long period of time before they be realized ; and therefore a simple mode of attaining the ob- jects of those societies occurred to me, which was, that they should have two chests, as it were, one for the temporary pur- pose of sickness, to be supplied by a trifling contribution, and augmented as occasion might require ; the other to be entirely distinct, and kept as their permanent capital." That this opi- nion, however, with regard to the rate of sickness, was erroneous, will be afterwards fully shewn, by the most unquestionable evi- dence ; and that the system of management recommended, and hitherto almost universally acted upon, is the most ruinous that could have been suggested, has been already sufficiently demon- Benefit or Friendly Societies. 135 strated by the numerous failures of Friendly Societies'* schemes. But as these opinions are from so high authority, and as the failures of Friendly Societies are attended with the most serious consequences both to their members and to the public, we trust to be indulged in entering somewhat fully into a detail of the more obvious errors which have been committed. As already stated, Friendly Societies were originally charita- ble institutions. Hence the expenditure was extremely limited, and, consequently, a small contribution would be adequate to de- fray it. In the progress of time, however, when every one be- came entitled to claim the allowances as his right, the same con- tribution could not suffice ; but, as might have been expected, a long time necessarily elapsed before this was perceived, as no so- ciety, which continues to acquire new members, can come to its maximum expenditure for the first 30 years ; and, therefore, the improvement in the principle of benefits, without a corresponding increase of the payments, has certainly been one main cause of the failure of their schemes. Societies at their commencement, generally admit members at all ages, for the same rate of entry money, and even afterwards seldom make any difference for those under 36 or 40. A uni- form sick allowance is likewise granted to the whole for the same annual payment, upon the supposition, that the aged of one generation will be provided for by the youth of the next. But, while the demands of youth are no doubt greatly less than those of old age, still the surplus contributions of the young members will be alone very inadequate to defray the allowances of the old ; for, supposing the annual rate of sickness of an in- dividual at SI years of age to be represented by one, the rate of sickness from 60 to 70, on an average, will be represented by ten, and at 70 it will be represented by eighteen. Hence, if members do not enter in youth, and accumulate a sufficient capital, or if it be prematurely expended in defraying the lar- ger demands of those who entered at higher ages, then, when a number of years has passed, the expenditure will come to exceed the income, and a small capital must soon be exhausted. Still, however, if young members can be found, if the contributions be increased, and the allowances reduced, a long period may elapse before the growing evil is fully known, until by the greatly in- 136 Mr W. Fraser cni the History and Constitution of creased claims of the now more numerous and aged members, the society suddenly go to ruin. Another important error which societies have committed, is in enlarging their distributions, when their capital has continued progressively to accumulate for a long series of years. This circumstance, however, until its reasons are fully understood, is apt to create a dangerous illusion. Although the annual con- tributions for a number of years at the commencement may be greatly less than is necessary to support the society to the end, yet the capital may for many years continue rapidly to increase. In the early and healthy period of life, the members, even with a very low contribution, will pay more than they receive, but in advanced life they will receive much more than they pay. A society, therefore, for money received, undertakes to pay after- wards a far greater amount; and hence, although possessing a large capital, it may still, in fact, be far below the requisite sum. As has already been remarked, however, an idea has very generally prevailed,, that Friendly Societies have no need of funds, and . that to accumulate capital is merely providing for posterity, since societies have it always in their power either to raise their contributions or lower their allowances, as cir- cumstances may require. But, as was long ago justly remark- ed by Dr Price, all that is given too much to present claim-, ants is so much taken away from future ones ; and if a scheme is very deficient at the beginning, the first claimants may, from the greater part of the members being young and healthy, receive for a number of years so much more than they ought to have done, as to leave little or nothing for those who come after them. Erroneous schemes are therefore attended with peculiar injustice ; and this injustice will be the same, if, in- stead of reducing the allowances, the annual payments should be increased, for the only difference consists in causing the in- justice to fall on future contributors instead of future claimants. In general, however, deficiencies will only be perceived when it is so late that no other alternative remains to save societies from instant destruction, but either to raise the contributions, or re- duce the allowances far below what was originally promised. Members, therefore, entering twenty or thirty years after the commencement, will be called upon to pay larger yearly contri- Benefit or Friendly Societies. 137 butions than are required to secure their own [)roportion of be- nefit, on account of being obhged to support the original sur- viving members, who, when they were young, perhaps never either gave to others half the present allowances, or paid much above half the annual contributions. Their best and youngest members will then perceive that they have gone upon erro- neous calculations, and will desert them, the inevitable conse- quences of which must be, a still greater deficiency in their an- nual income, and a more rapid desertion and decline, until a total bankruptcy and dissolution take place. But the accumulation of capital which necessarily occurs in societies for a number of years at the commencement, has also led into the very erroneous opinion, that as the capital increases, so ought also the terms of admission in the same proportion even for young members ; while the fact is, that as the funds increase, so also do the first members increase in years and infirmities ; and though members enter subsequently to a larger capital than the first members did, they at the same time enter among a lar- ger class of aged and infirm people ; who, from their payments being now inadequate to defray their allowances, must them- selves either require all the capital that they had accumulated in early life, or be supported from the surplus contributions of the young members. The usual practice, therefore^ of raising the rates of entry-money, and otherwise limiting the terms of admis- sion, when a society has been some time established, and has ac- cumulated a capital, is doing a manifest injury to «/omw^ entrants, who can never derive any benefit from that capital. So much with regard to the errors in the sickness department, but the same erroneous system of management is still more ob- vious in that for funerals, or sums payable at death. A member entering at 40 years of age, becomes entitled to the same allowance at death, as if he had entered twenty years before, while the society has been deprived of just so many years' con- tributions. It has been asserted, however, that a man at 40 is likely to continue as long healthy as one at 20, and, therefore, that a society runs just as much risk with the one as with the other. That such is not the case will be afterwards made apparent ; but although this were to hold true with regard to sickness, still the case is different with regard to death. An entrant at 40 is then alive, and no possible claim could have been previously made for 138 Mr W. Fraser cm the History and Consiitutimi of his funeral money. He, therefore, to all intents and purposes, has pocketed twenty years' contributions, deprived the society of that amount, and thus placed himself in a vastly better situation than those members who entered in early youth. But besides the great loss thence arising from the admission of aged men, the usual method of only contributing for funerals as they occur, is attended with the most destructive consequences. While the members, or a great proportion of them, are young, the deaths will be few, but, with the advance of age, these will necessarily increase. Hence the demands will then also increase ; and thus, in old age, when least' able to afford it, the surviving members will find the contributions perhaps double what they were in youth. At the commencement of a society, too, the members are generally few in number, and where a small sum only, or perhaps nothing, is levied from each member, thebalance, if not the whole, must be taken from the sick-fund. Should the members increase, so will also the deaths, and consequently the contributions and disbursements; so that the accounts for funerals will ultimately equal, if not exceed, those for sickness, while the sums received by the relations will bear no proportion to the pay- ments, or the period which the member may have been in the so- ciety. The most pernicious, however, and certainly the most unjust, of all the evils of the old system, is the giving funeral allowances for wives, and annuities to widows, without the payment of ade- quate contributions. Now that the principle of charity is aban- doned, why should the married possess advantages over the un- married ? Where all contribute alike, all should receive alike ; and if double or treble allowances are required, they ought to be paid for in proportion. This is surely but equitable ; for as well might a married member claim sick-money for his wife, with- out contributing for it, as demand funeral-money, or a widow's allowance, under similar circumstances. It has been said, how- ever, let all marry, and then every one will be on an equal footing; but if all were to marry, then the same contribu- tion would not suffice ; and those who are now married, are just as much bound to contribute for their additional allowances as if all the members were married. But the evil does not even stop here. Upon the entry of a member, the society has seldom the means of knowing any thing relative to the health or age of Benefit or Friendly Societies. 139 his wife. Should she be old or in a bad state of health, her fu- neral-money will probably be very soon required. The member may again marry, pay a small sum, and in a short time claim a second — nay even a third — wife's funeral allowance ; — and all this chiefly at the expence either of the young and the unmar- ried members, or of the funds of a poor bankrupt society. But, heavy as this burden certainly is, it is nothing in compari- son with widows' allowances. It should be particularly observed, that a widow's provision is not the light burden generally suppos- ed, or one which may be added to a scheme without an adequate contribution ; on the contrary, it will of itself inevitably soon bring a society to ruin. The same, if not stronger, objections are therefore applicable to those allowances as to funerals ; but as such benefits are now seldom promised by these societies, it seems here unnecessary to do more than allude to them. It is still to be regretted, however, that many institutions, under the denomination of Widows' Schemes^ are still in existence, upon the most erroneous principles, and which will therefore be pro- ductive of nothing but loss, disappointment, and misery. Such, then, being the opinions by which Friendly Societies have been guided, and the system of management which they have very generally adopted, it is not surprising that they should have so frequently failed ; " their errors, however, are matter of no reproach, for the spirit is to be admired, which, revolting at the humiliation of depending upon chanty, led their founders, seek- ing for the means of independent support in sickness and in old age, to endeavour to attain the desired end, regardless of the dangers of miscarriage*," — but their experience having now laid the foundation of a more correct system, by affording data for computation, which could not otherwise have been obtained, every means should be used to found them on a more secure basis in future. (To he continued.) * Highland Society's Report, p. 9. A ( 140 ) On the Comparative Nutritive Propertioi o/' Dtjjerent Kinds of' Food. VERY interesting report on this subject was formerly pre- sented to the French Minister of the Interior, by MM. Percy and Vauquelin, two members of the Institute, the accuracy of which may be depended on. It may, at this period of public distress, be valuable in those families where the best mode oi' supporting nature should be adopted at the least expence. The result of their experiments is as follows :— In bread, every hundred pounds weight are found to contain eighty pounds of nutritious matter. Butcher's meat, averaging the various sorts, contains only thirty-five pounds in one hundred. Broad beans eighty-nine. Pease, ninety-three. Lentils (a kind of half pea, but little known in England), ninety-four pounds in one hundred. Greens and turnips, which are the most aqueous of all the vegetables used for domestic purposes, fur- nish only eight pounds of solid nutritious substance in one hun- dred. Carrots, fourteen pounds. And, what is remarkable, as being in opposition to the hitherto acknowledged theory, one hundred pounds of potatoes only yield twenty- five pounds of substance^ valuable as nutrition. One pound of good bread is equal to two pounds and a half, or three pounds, of the best potatoes ; and seventy-five pounds of bread, and thirty pounds of meat, are equal to three hun- dred pounds of potatoes. Or, to go more into detail, three quarters of a pound of bread, and five ounces of meat, are equal to three pounds of potatoes; one pound of potatoes is equal to four pounds of cabbage, and three of turnips ; but one pound of rice, broad beans, or French beans, is equal to three pounds of potatoes. On an Excellc^it Mode of Coating Small Articles of Metal with Tin. * By Thomas Gill, Esq. J^JIr Gill once witnessed the following superior mode of tin- ning small articles, such as tacks, nails, &c., for instance, with great economy and convenience. The workman having previously made the surfaces of the ar- * From Gill's Technical Repository. Dr Jones on Polishing Ivory ^ d^c. 141 tides clean from rust or other oxide, by pickling them, or put- ting thera into sulphuric, muriatic, or nitric acid, diluted with water, as usual, and washing them well afterwards in water, he put them into a stoneware gallon bottle, having an oval body, a narrow neck, and a handle to lift it by, together with a propor- tionate quantity of bar or grain tin, and of sal ammoniac. He then placed the vessel, lying upon its side, over a charcoal fire, made upon a forge-hearth, and heated it ; continually tqrning it round all the while, and frequently shaking it, to distribute the tin uniformly over the surfaces of the articles to be tinned. They were then thrown into water, to wash away all remains of the sal-ammoniaCj and finally dried in saw-dust made warm. The great merit of this process consists in the employment of the stoneware vessel, which not only prevents the dissipation of the sal-ammoniac in fumes ; but also gives up the whole of the tin to the articles to be tinned, which would not be the case were a metallic vessel to be used. On polishifig Ivory ^ Bone, Horn and Tortoise-shell. By Dr Thomas P. Jones. Ivory and Bone, either plain or ornamented. JLvoRY or bone articles admit of being turned very smooth, or, when filed, may afterwards be scraped in the manner to be presently described, so as to present a good surface. They may be polished by rubbing them first with fine glass paper, and then with a piece of wet linen cloth dipped in powdered pumice-stone ; this will give a very fine surface, and the final polish may be produced by washed chalk or fine whiting, ap- plied upon another piece of cloth wetted with soap suds. Care must be taken in this, and in every instance where arti- cles of different fineness are successively used, that, previous to applying a finer, every particle of a coarser material be re- moved, and that the cloths be clean, and free from grittiness. Ornamental work must be polished with the same materials as plain work, only using brushes instead of linen or woollen rags, and rubbing as little as possible, otherwise the most pro- minent parts will be injured. The polishing materials should be washed off* with clean water, and, when dry, the articles may be rubbed with a clean brush, to finish them off. 14S Dr Jones on Polishing Ivory ^ S^e. Horn and Tor'toise-sheU. These substances are so similar in their nature and texture, that they may be classed together^ as far as regards the general mode of working and polishing them. A very perfect surface is given by scraping them ; the scraper may be made of a razor- blade, the edge of which should be rubbed upon an oil-stone, holding the blade nearly upright all the while, so as to form an edge like that of a currier's knife ; and which, like it, may be sharpened and improved by burnishing, at least so far as its hardness will permit. To prepare the work, when properly scraped, for polishing, it is first to be rubbed with biiff', made of woollen cloth, per- fectly free from grease ; the cloth may be affixed upon a flat stick, to be used by hand, but what workman call a hob, which is a wheel running in the lathe, and covered with the cloth, either upon its edge or periphery, or flat face, as may be requir- ed, is much to be preferred, on account of the rapidity of its operation. This buff" or bob is to be covered either with pow- dered charcoal and, water, or fine brick dust and water. After the work has been made as smooth as possible by this means, it must be followed by another buff* or bob, on which washed chalk or dry whiting is rubbed ; the comb, or other article, is to be slightly moistened with vinegar, and the buff^ and whiting will produce a fine gloss, which may be completed by rubbing- it with the palm of the hand, and a small portion of dry whit- ing or rotten stone. — FranMin Journal. Abstracts and Remarks relative to Captain Sabine'^s Expei'i- ments on the Dip and Intensity of' the Magnetic Needle, in different parts of the Northern Hemisphere. By Peter Barlow, F. R. S., Mem. Imp. Ac. Petrop. Communica- ted by the Author. Xn my former paper relative to the magnetic experiments made during the late Northern Expedition *, I endeavoured to • I wish here to correct an omission in the title of my former paper. It was intended that the experiments should have been stated to have been " By Captain Parry, Lieutenant Foster, and the other Officers of the Expedition." Mr Barlow's Remarks on the Magnetic Needle. 14S shew that the hypothesis suggested by Lieutenant Foster, viz. " of the magnetic pole having a daily motion about its mean point in an orbit of about 2^' or 3' in radius," would serve to explain all the general phenomena of the observed daily changes in direction and in intensity of the magnetic needle in different parts of the globe. I also stated that there were other changes, or rather other sources of change, which served to modify the observed results, and would require farther illustrations. These illustrations will form the subject of the following pages, parti- cularly with reference to Captain Sabine's experiments. First, then, let us observe, that it is shewn in the former paper, that if the phenomena alluded to may be generally represented by a daily rotation of the magnetic pole about its mean point, it must be by supposing the pole to be always inflected towards the sun. It is on this supposition the former explanation as to time, &c. has been founded, and the first question beyond this is, ^' Does this inflection arise from the solar influence increasing or diminishing the magnetism of that part of the globe on which it is the greatest ? A very little consideration will suffice to shew, that, if that hemisphere of the earth on which the sun shines at any time has its magnetic power more strongly developed in consequence of the increased heat, the resultant of all the forces will approximate towards that part of the sphere, and will cause an apparent approach of the pole towards that side. Now, we have seen that this apparent approach of the magnetic pole has been actually observed during the time the sun is advancing to- wards the meridian of any place ; and hence we conclude that this approach is caused by an increased magnetic action in those parts of the earth immediately exposed to the solar in- fluence. That this would be the case in the magnetism of an iron-ball thus partially heated, is unquestionable, — Phil. Trans. 1821^ Part I. ; and as, in all other known cases, the laws of iron,, magnetised by induction, and those of terrestrial magnetism, sa closely resemble each other, it may serve to condense our re- marks, if we first confine them to the case of an iron-ball under different temperatures resembling the actual state of the earth. With this view, it may be observed, that, according to the hypothesis of iron receiving its magnetism by induction, it is 144 Mr Barlow's Remarhs on the Dtp and Intensity supposed, both in my investigation and in that of M. Poisson, that each particle of ^the magnetic fluid has tlie same intensity of action at the same distance ; and, on this supposition, all the conditions of its action are deduced. But if, instead of this uniform action, we suppose the equatorial parts of a sphere of iron to act with greater intensity, as would actually be the case if the temperature of the iron were increased in those parts, let us inquire in what manner, and in what degree, this would influence the laws deduced from assuming an uniform intensity at equal distances. And if it result from this inquiry, that an increased intensity, and a diminution of the natural dip about the equatorial regions, would be the necessary consequence of such a supposition, and an increase of the natural dip, with a corresponding decrease of intensity in those parts towards the poles of the iron shell ; and if, moreover, referring to actual ob- servations and experiments on the terrestrial globe, it should be ' found that corresponding phenomena have been observed in the frigid and torrid zones, we shall, I think, have strong reasons for assuming that the phenomena in both cases are due to the same cause, viz. an unequal temperature and a corresponding inequality of magnetic intensity ; but still not such as can be explained by assuming a pole of intensity distinct from that of direction. Here, then, at once will be seen the principle on which I pro- pose to explain, first, the apparent anomalies which Captain Sa- bine detected in his experimental results between the intensity and dip in the frigid, temperate, and torrid zones ; and, second- ly, some of the modifications in the daily changes of magnetic intensity, &c. which seem to be dependent on causes not em- braced by the general hypothesis of the daily rotation of the magnetic pole of the earth about its mean point. It is, I believe, to Dr Young we are indebted for the first analytical formulae for expressing the intensity of terrestrial mag- netism, as depending on the dip of the needle, viz. Intensity of dipping needle I — A s.1 -. ^ . » •^ rr & Y 4 — 3 sm^ 5 Intensity of horizontal needle I = A ^/ 7: s-. ^ V 3 -t- sec^ ^ Where ^ is the dip, and I the magnetic latitude of the place of in different parts of the Northern Hemisphere. 145 observation ; and although more exact observations have shewn that these laws are not strictly true, in places where the dip differs considerably, yet the agreement is too close to admit of a doubt that they are on general principles correct, and that the discrepances are due to some cause which it would be satis- factory to be able to explain. Let us see, therefore, how far the supposition of an effect, due to unequal temperature, may be calculated to furnish such an explanation. In the first place, it may be proper to remark, that whatever might be the temperature of the entire sphere, so that it were uniform, the laws would remain the same ; the intensity would, indeed, be different, but the formulae having reference only to the relative intensities, dip, &c. in different latitudes, would, of course, remain the same under all uniform temperatures. I propose to examine this question only on broad principles, without attempting any thing like an analytical investigation of it ; because, to investigate this problem, in all its generality, would require, in the first place, a more perfect knowledge than we yet possess, of the proportional magnetic developement under different temperatures ; and, secondly, if this were known, it is perhaps doubtful whether the modern analysis, even in its pre- sent high state, would be competent to contend successfully with all the conditions of such a problem. At the same time, it vtdll be easy to shew, that the circumstances alluded to, viz. an in- creased heat about the equator, would alter the laws which are applicable to an uniform temperature, and that this change would lend to results very strongly resembling the known con- ditions of terrestrial magnetism. Let us conceive the uniform tempe- ratures, to which the laws apply, to be that belonging to the magnetical lati- tude, in which the needle is at right angles to the terrestrial magnetic axis^ so that the dip is equal to the magne- tic colat., then 2 tan. l=:tan. colat. Z, or 2 tan. /=cot. lat., which gives lat=:35°.44. We may then, according to the broad view we are taking of the sub- ject, consider the needle as placed in APRIL JUNE 1827. 146 Mr Barlow's Remarks on the Dip and Intensity of the equilibrio in this position by two forces, one directed towards the polar parts N, and the other towards the equatorial parts C. Now, conceive the actual temperature of the several regions to be restor- ed, then all the parts between L and C will be increased in tempe- rature ; and, therefore, according to our supposition in magnetic intensity, while the intensity of all the parts between L and N will decrease, and the needle will, in consequence, be more in- flected towards the centre C ; that is, the dip will be increased : but the actual intensity, independent of the dip, will be greater or less, according as the mean temperature shall be now greater or less than the uniform temperature first supposed ; however this may be, in this particular latitude, there is, at least, some part in which the mean temperature shall be less than the uni- form temperature, and beyond that point, towards the pole, the intensity of the needle will be less, from considerations of tem- perature only, than ihat given by the formula I = u - — . g - ' 4— 15 sin y. it will also be less, because the dip will itself be greater than that which results from the principle upon which tlie for- mula is obtained. It follows, therefore, that, in every mag- netic meridian, there is a point beyond which, towards the pole, the actual observed intensity of the needle will be con- siderably less than ought to result from the formula given by Dr Young, and employed by Captain Sabine; and, in a similar way it may be shewn, that there is another point in each meridian towards the Equator, in which the intensity is considerably greater than that given by the formula; first, in consequence of an increased temperature ; and, secondly, in consequence of an actual diminution of the dip below that due to an uniform temperature. That this would be the actual re- sult due to the magnetic action of an iron ball, heated as we have supposed, is unquestionable ; and the circumstance of such a law being observed in the different zones of the earth, and particularly the proof furnished by Lieutenant Foster's experi- ments, that the solar rays have a positive influence on the mag- netism of the terrestrial sphere, and an influence, moreover, of that kind, which is perfectly consistent with these suppositions ; we have, I think, strong reasons for concluding, that the par- needle in different parts of' the Northern Hemisphere. 147 tial intensity of magnetism, in different parts of the globe, is de- pendent on the partial temperature ; and, that the formula de- duced from a supposition of a uniform temperature, will give a less intensity towards the equator, and a greater intensity to- wards the poles, than is consistent with the actual state of terres- trial magnetism ; or, which is the same, the observed intensity in the torrid zone will be found to exceed, and that in the frigid zone to fall short of, the intensity which ought to result from the formula generally emptoyed. And this is consistent with the observations of Captain Sabine, as will appear from the ab- stract we have niade in a subsequent page. In the above rea- soning we have supposed an uniform temperature in each paral- lel of latitude, but this, of course, is by no means the case on the terrestrial globe ; consequently, although the hypothesis ad- vanced above may explain, on general principles, many of the apparent anomalies observed by Captain Sabine, it cannot be expected to meet them entirely ; because, if temperature has the general influence we have supposed, it must also have that partial influence, which is due to localities, and other causes of partial temperature, and hence, perhaps, we may account for that extra- ordinary intensity which Captain Sabine observed at New York, and along the coast of America generally ; the land and ocean furnishing not only different degrees of temperature in the same parallel, but also different conducting powers, and it is probable that much depends upon the latter condition ; and hence, again, perhaps considering the land of the terrestrial globe, as divided into two great continents, we may see some reason why the laws of magnetism, as actually observed on the earth, should be rather consistent with the hypothesis of two north and two south poles, (as first advanced by Dr Halley, and supported by so many authorities by Professor Hansteen), than with that which supposes only one pole in each hemisphere. Unfortunately, Professor Hansteen has mixed up, with many valuable records, collected with great labour, a great deal of mystical matter relating to numbers and periods, which have thrown some discredit upon the performance ; but, rejecting the latter, it is extraordinary how very nearly his calculations ap- proach to observations not only as relate to the dip and varia- k2 148 Mr Barlow's Remarks on the Dip and Intensity of the tion, but also to the intensities in different parts of the world, as will be seen by comparing them with the results obtained by Captain Sabine in various parts of the northern hemisphere, and with those of Captain Parry and Lieutenant Foster, at Port Bowen, and other stations ; and, as the general results in Han- steen''s table of intensities, as well as those from observation, ap- pear to be all consistent with the above explanation, we are jus- tified, I think, in concluding, that the discrepance between the intensities, as observed, and as computed from the formula I = A V 4 Q • "§> arises from the unequal temperature of the different regions ; and, consequently, that the hypothesis of a pole of intensity, distinct from that of direction, is unsatisfactory and untenable. Tli£ Jbllowing are the dips and intensities, as observed by Captain Sabine, and as computed by thejbrmida I = A 4 — 3 sin § Intensity. 1 Places. Latitude. Longitude. Date. Dip. Comp. Observ. St Thomas, 00.5 N. 6.75 E. May 1822. OO" 0.'4 S. 1.00 0.99 Ascension, 8.0 S. 14.5 W. June ... 5 10. S. 1.005 Bahia, 13.0 S. 38.5 W. July ... 4 1.2 N. 1.00 Sierra Leone, 8.5 N. 13.5 W. March ... 31 2.25 N. 1.12 1.115 Marranham, 2.5 S. 44.0 W. Aug. ... 23 7.75 N. 1.06 1.09 Gambia, 13.5 N. 16.75 W. Feb. ... Port Praya, 1.5 N. 23.5 W Jan. 45 26.1 N. 1.27 TenerifFe, 28.5 N. 16.25 W. Jan. 59 50. N» 1.57 Trinidad, 10.5 N. 61.5 W. Sept. ... 39 2.5 N. 1.19 1.33 Madeira, 32.5 N. 17. W. Jan. 62 12.3 N. 1.55 London, 5.15 N. 0. w. Aug. ... 70 3.5 N. 1.72 1.54 Jamaica, 18. N. 77. W. Oct. ... 46 58.25 N. 1.29 1.52 Cayman, 19.25 N. 81.5 ^Y. Oct. ... 48 48.3 N. 1.32 1.63 . Drontheim, 63.5 N. 10. E. Oct. 1823. 74 43. N. 1.82 1.52 Hammerfest, 70.5 N. 24. E. June ... 77 15.7 N. 1.87 1.57 Havannah, 23. N. 82.5 W. Nov. 1822. 51 55.3 N. 1.37 1.62 Spitzbergen, 80. N. 11.5 E. July 1823. 81 11. N. 1.93 1.66 Greenland, 74.5 N. 19.5 W. Aug. ... 80 11. N. 1.92 1.62 New York, 40.5 N. 74. W. Dec. 1822. 73 0.5 N. 1.79 1.88 With respect to the intensity of the horizontal needle, it will be obviously subject to different laws, because it will be less as the dip is greater, and greater as the general intensity is needle in different parts of the Northern Hemisphere. 149 greater. It follows, therefore, that the intensity of the hori- zontal needle may be at its maximum, when the general in- tensity is at its minimum, and vice vcrsa^ particularly in places where the dip is very great, because there a very few mi- nutes' change in the dip will very sensibly affect the horizontal needle, while that of the dipping-needle will scarcely have suf- fered any perceptible alteration. Irregularities in the horizontal needle will therefore be much more common, and more appre- ciable, in northern latitudes, than in places near the Equator ; while changes in the state of the dipping-needle will be more common in the latter situations than in the former ; all which I believe is sufficiently consistent with observations ; at least Pro- fessor Hansteen has recently shewn, that the change of intensity in the horizontal needle, between its annual maximum and mi- nimum, is much greater as the dip is greater ; and I think it highly probable, if his observations had extended to places nearer the Equator, he would have found it a minimum in one place, when it was at its minimum in the other. It would, however, be endless to trace out all the circum- stances that might result in different places, by supposing that a higher temperature developed a higher degree of magnetic in- tensity. I shall therefore content myself with what is above stated, hoping that it will be sufficient to attract the attention of observers to this probable cause of magnetic irregularities in dif- ferent parts of this terrestrial globe. Woolwich, 1 \m May 1827. j ERRATUM IN THE FORMER PAPER. For Professor I-ieibech read Professor Seebeck. Refutation of Mr Ivory's New Law of the Heat extricated from Air hy Condensation. By Mr Henry Meikle. — Commu- nicated by the Author. W HEN writing the articles on the relations of air and heat, inserted in the last Number of this Journal, I was not aware that 150 Mr H. Meikle's Refutation of Mr Ivory's Nezv Law of my previous labours on the same subject in No. II., had already set a-working the great powers of Mr Ivory. But, on perusing the numbers for February and March, of that valuable united journal The PMlosophical Magazine and Annals of Philosophy, I found an attempt to bear down, not by rational argument, but purely by force of his own authority, all that I had formerly proved on this subject. I say pj'oved ; for, although Mr Ivory, throughout his recent papers, is at great pains to state^ in the most pointed terms, the very reverse of what I had inculcated ; yet he not only does not combat my reasoning, but admits, in the strongest terms, nay, eulogizes, in one place or other of his paper, all the data I have employed ; and every one who has but a moderate acquaintance with the mathematics, will see that the conclusions I have drawn follow as necessarily from the data, as those of any proposition in Euclid. A still more elementary investigation of the law of temperature in air, is given at page SS6. of the last Number of this Journal ; and the same conclu- sions may be legitimately drawn from the premises in various other ways. I did not expect that on this subject I was to be opposed by first rate mathematicians ; because such ought to see at once the truth of my conclusions, even although they may not admit my investigations to be altogether free from imperfections. Others are at hberty to withhold their assent, but men of science must give way, because it is not a mere matter of opinion. There is no alternative, if the data be admitted. Mr Ivory's paper is entitled, '* Investigation of the Heat ex- tricated from Air, when it undergoes a given Condensation."" In the Philosophical Magazine for July 1 825, the same author has given us what he calls " The Laws of the Condensation and Di- latation of Air," &c. and which are intended to serve the very same purpose. They had been published two years prior to this, by that distinguished mathematician M. Poisson. But, in the present article, no mention is made of the old laws, far less whether they are now repealed to make room for the new. When an author presents the public with a view^ of any subject, diiFer- ent from, or directly opposed to, what he had formerly given them, h^ is not only expected, but bound, in good faith^ to state the Heat extricated from Air by Cojidensation. 151 his reasons for such a change. Our author, as we shall hereaf- ter see, is blamable in this respect. After some introductory remarks which had been repeatedly given in his former papers, the pretended investigation of the new law proceeds thus : — " We must next inquire according to what law the latent heat accumulates when air expands. When a mass of air, under a constant pressure, varies by the applica- tion of heat, I assume it as an acknowledged principle, that equal quantities of absolute heat produce equal increments of volume." Now, on this I need only observe, that assumed principles and acJcnowledged principles are too often erroneous principles ; and it is the business of science to challenge the legitimacy of all such random and gratuitous assumptions. In assuming this acknowledged principle, Mr Ivory has been forced to transgress the much more sound and safe principle of Newton, — That no more principles are to be admitted than are necessary to solve the problem. Now, Mr Ivory knows very well, that I have repeatedly shewn that the problem can be solved in a most satisfactory manner, without this assumed and acknowledged principle. Nay more, I have shewn that it is a false and unfounded principle, as will farther appear by the perusal of this essay, which I hope will have the salutary effect of finally settling the true scale of the air-thermometer. Having thus noticed the loose hypothetical foundation of Mr Ivory^s investigation, I shall now advert to its remarkable inconsist- ency with his previously avowed doctrines. Thus, his laws or formulae given in Phil. Mag., July 1824, page 9.5 set no limit to the heat extricated from air by compression ; but, as we shall shortly see, he has now confined that rise of temperature with- in a very narrow compass, and without assigning a sufficient reason for effecting such an extraordinary revolution in the un- alterable laws of nature ! In 1825, the greatest cold produced by the dilatation of air, could never descend below — 448° Fahr. ; but, under the new law, it is bottomless and unfathomable.* * By looking into page 338, No. II. of this Journal, it will be found, that though I had anticipated the scanty production of heat by the new law of con- densation, yet I did not then foresee, but doubted, its enormous frigorific powers. 152 Mr H. Meikle's Refutation of Mr Ivory's New Law of In July 1825, Mr Ivory was pretty sure that the value of the fraction, which he now calls — , was J, and assigned a most absurd reason for it, as noticed in the last Number of this Journal. He also maintained, that it agreed sufficiently with the experiments on sound. In February last, he makes this fraction | ; in March | ; and, by this time, it is hard to say what may have been its fate. But, at all events, he avers and insists, over and over again, that it must be a constant quan- tity ; and he contends, with equal zeal, for the accuracy of the law of Boyle. On these two points, viz. the constancy of the ratio of the specific heats and the law of Boyle, Mr Ivory and I are per- fectly agreed. They are the only data required for investigat- ing the true law of temperature in air, and from which it fol- lows as a necessary consequence *. However, when we reflect a little on the unstable nature of Mr Ivory's creed, it would be nothing remarkable, that, ere long, he renounce them both, and, as usual, without wasting time in assigning a reason. The fraction of which we were just speaking, is the excess of the specific heat of air under a constant pressure, over its spe- cific heat, reckoned unit, under a constant volume. From the many experiments made with the apparatus formerly described, I have found that fraction always so close on J, that I expect this will ultimately turn out to be the true quantity ; and I think, the circumstance of this value pointing at the existence of a repulsive force, between the particles of air, inversely as^the square of their distance, adds greatly to the probability -f. It scarcely deserves notice, that the value of this fraction, as com- puted by Mr Ivory, from the experiments of Desormes and Cle- ment, was always .3492, till I gave the correct Number .354, which he has now got hold of. In the Second Number of this Journal, I instanced the para- * This law, it will be recollected, is, that, when the variations of the quan- tity of heat in a mass of air are uniform, those of its volume, under a con- stant pressure, form a geometrical progression ; as do likewise the variations of pressure under a constant volume. t See last Number of this Journal, p. 391. the Heat extricated frorn Air by Condensation, 153 doxical circumstance, that a correct result may sometimes be obtained from erroneous premises ; but fortune has not here fa- voured Mr Ivory with any such conclusion, nor saved him from announcing, as the result of his investigation, a proposition which, he says, " solves the problem,"" although it may not only be condemned on its own evidence, but it obviously involves the consequence, that air, having the temperature of 32° F., can never by compression be brought to 212°, — a result noto- riously at variance with observation, which has never yet disco- vered a limit to the rise of temperature, — but a result, let us re- collect, which supposes the absolute zero at — 448° F. When would tinder kindle under the boiling point * ! Had the same air been rarified only eight times, it would have been cooled down to — 1228° F., or 780° below the absolute zero above men- tioned. A more extravagant inconsistency cannot well be con- ceived, if we except the still greater cold attending a greater ra- refaction ; and yet, according to the laws of 1 825, the greatest cold could never reach — 448°. The proposition alluded to, and which announces Mr Ivory's new law, is this : " The heat extricated from air when it under- goes a given condensation^ is equal to | ths of the diminution of temperature required to produce the same condensation^ the pres- sure being constant. But since ignorantia legis 7iemini excusat, I shall, for the reader's edification, present him with a comparison of the laws. Let a be the expansion in the volume of air at zero, for one de- gree of the thermometer ; t the temperature by the common scale, for the initial density ; and i the change of temperature on the same scale, produced by changing the density of the air in the ratio of § to unit ; or, g is the quotient of the density at the end of the operation, when divided by that at the begin- ning. Then the old law of condensation given in 1825 is l±fl (,»_:), • According to the experiments of M. Gay Lussac, tinder or amadou be- comes ignited in air condensed into one-fifth of its bulk. But this, by the new law, only produces a temperature of 32* + 144° = 176° F., or 36° under the boiling point ! 154 Mr H. Meikle's Refutation of Mr Ivory's New Law of and the new law announced above is « 8 ^ Two very different laws to be sure. If t z=: 32° F., and con- sequently a = -77^ for Fahrenheit's scale, we have, For 1825, i = 480° (?^ — l). For 1827, i = 180° x ^-^=^. The truth of all I have alleged against the new law will now be manifest ; particularly, that the quantity i can never amount to 180° ; that is, the temperature can never, by condensation, be raised 180°, or to the boiling point of water. So that, un- der the new law, we need never attempt to kindle tinder in a condensing syringe. If we compute the increase of temperature foi* a quadruple condensation, by means of the formula given in 1825, viy. we shall find, that the rise of temperature on the common scale, or the value of /, obtained by putting § = 4, is exactly equal to the sum of the rises obtained at two operations, taking an inter- mediate density. Thus, put § = 2, and find the value of i ; then add this to r, and find a second value to i; it M^ill be found, that the whole rise of temperature is precisely the same in both ways. The character of the formula, therefore, re- mains unsullied by this test, though I do not mean to say that this is a complete and positive proof of its correctness. On first seeing that formula in M. Poisson's memoir, I tried it by this test, and the result did not lower its value in my estimation. It is plain, that any formula which will not bear to be so handled, must be a mere visionary shadow, self-condemned, and good for nothing. I therefore proceed to apply the same simple test to the trial of the new law. The new law of condensation is, of course, meant to be quite general in its application, — answering alike for all moderate the Heat extricated from Air by Condensation. 155 temperatures and densities. Let us see how it stands the fore- going test, of computing the rise of temperature due to a qua- druple condensation, by a single operation, and by two separate operations. At one operation, we have, putting § = 4, and T = 32°F., ando = ^ a S e, Again, with ^~% we obtain i = 90°. Adding this to 32° makes the initial temperature t= 122°, and the formula, with ^ again = 2, becomes 106°. 875 for the second value of i. Hence the whole rise, computed at two operations, is 90° + 106°.875 z= 196°.875, which exceeds 135°j the rise at one operation, by the enormous quantity of 61°. 875. A similar inconsistency will come out in whatever way we vary the trial, and whether we use rarefactions or condensa- tions. But I shall now apply a more obvious test. In the case just considered, air at the freezing point, or 32° P., had that temperature raised 90°, or to 122°, by having its density doubled. Now it is clear, that, if the new law were cor- rect, the same air, by having its acquired density halved, should just have its temperature lowered 90°, or from 122° to 32° F., being in every respect restored to its original condition. But if, in the above formula, representing the new law of conden- sation, we put T = 122°, a — — — , and § == 4, the depression of temperature is no less than 213°. 75 ; and, consequently, the re- sulting temperature, in place of 32°, is 122°— 213°.75 = ~-91°.75 F. ; giving the monstrmis error of 123°.75, just double of that in the former example. On the other hand, w4ien the formula representing the old law of condensation is tri-ed by the same test, not the slightest inconsistency can be detected ; because this is founded in fact, but the new law in fancy. It would be no difficult matter to apply both of these tests in a general way, by means of symbols ; but the above proof, I presume, will be deemed quite conclusive, and will be more ob- vious to a greater proportion of readers. 156 Mr H. Meikle's Refutation of Mr Ivory's New Law of The absurdity of the new lazv of condensation is therefore ren- dered evident to demonstration ; and, indeed, if we reflect for a moment on its illegitimate origin, we shall cease to wonder at its untimely fate. The result clearly proves what I formerly stated, that it is impossible, in the very nature of things, for the change of the quantity of heat in air to follow the change of volume under a constant pressure, if we admit the law of Boyle, and that the specific heat of air under a constant pressure, has to its specific heat under a constant volume an invariable ratio. So that, in spite of all Mr Ivory's analytical skill, he has allowed his pre- judices to run him into a most untenable delusion ; but having virtually renounced his former tenets, it is not very obvious what he can next embrace. Postscript. — It will be found on examining Mr Ivory's pa- pers in Phil. Mag. for February and March last, which treat expressly on his new law, that no intelligible reason is given for such a radical reform. This excited in me, and proba- bly in many others, no small degree of surprise. For every one would have naturally expected, that a most satisfactory reason for the change should have prefaced his first paper ; and since his article on Sound, in the Number for April, did not profess to treat of the new law, but is styled an " application" of it, I never thought of searching there for what ought to have ap- peared so long before, and was foreign to the title. But since my paper on Mr Ivory's articles was sent away, I happened to look into his article on sound, and found a very brief and ob- scure hint that something of his in Phil. Mag. for June 1825 was liable to objection. At first, I thought it should be June 1824, but afterwards saw that it must mean July 1825, and then perceived that such was all the explanation or admission of incorrectness we were to expect on this mysterious transaction. But this, after all, was an admission of error in a point where he was most correct ; and therefore really worse than no ad- mission. Before, however, making this tardy and useless con- fession, our author tries to have MM. Laplace and Poisson first in the scrape, and prefers a charge against them, which, I have no dcfubt, he will discover to.be without foundation, when once the Heat extricated Jrom Air by Condensation. 157 his notions get right about the scale of temperature, and the laws of condensation. It will now be seen, that my not looking sooner into the Phil. Mag. for April was a matter of no moment ; and every one will be able to judge whether Mr Ivory has there redeemed his pledge of " clearing away all the clouds of obscurity," of which perhaps he had the best share himself. A Tour to the South of France and the Pyrenees., in the year 1825. By G. A. Walker Arnott, Esq. M. W. S. (Con- tinued from a former Number). JHLaving provided ourselves with all that was necessary for our journey, we left Montpellier in the diligence on the 17th May, in company with our two friends MM. Requien and Audibert, and arrived very late the same evening at Narbonne. On our route, we picked up very few plants, partly owing to our observing scarce- ly any of interest, and partly to the difficulty of getting out of a public coach when we did discover any. About Beziers, we first saw Paronychia hispanica, DC. {Illicebrum argenteum^ Lin.), and Echium violaceum and plantagineum of French authors ; but I have very great doubts if the latter be the true E. plan- tagineum of Linnaeus ; for, if I recollect well. Sir James Smith, in the Flora Graeca, describes the leaves of the E. plantagineum as having strong lateral nerves, and covered with a soft pubes- cence. In the above two French species, however, which I consider as mere varieties of one species, the lateral ribs are by no means conspicuous, and the hairs are always more or les ri- gid. The description given by De CandoUe in the " Flore Fran9aise'' answers well to the plant of Linnaeus ; but it is only indicated at Nice upon the authority of Allioni, who may have confounded it with the E. violaceum *. * That which is indicated at Narbonne in the Supplement to the " Flore Fran^aise", is certainly the same with ours. Mr Bentham (Catalogue des Plantes indigenes des Pyrenees et du Bas Languedoc, p. 76.), also considers, what we found as mere varieties of each other, but that each is the true Lin- nean plant : he further observes, that " when the plants grow close together 158 Mr Arnott's Tour to the South of' France On the afternoon of the 18tli, we made a short excursion to a small hill called the Pech de TAgnelle (la Nielle of some, and la Nivian of others), on which, and in the plain betwixt it and Narbonne, we found a few rare species : some of these were in a good state, though many, on account of the extreme drought, which in a great measure had destroyed the crops, were too much advanced. Among those we secured, were Plantago al- hicans, two or three Medicagos, Paronychia hispanka, Sisyjri' brium columns, Sonchns tenerrimus, Lonicera balearica, Dum. (with which L. implexa, Ait. *, appears identical), Melica py- ramidalis, of which M. minuta is merely a starved state ; Ca- chrys Morisoni, Leuzia conifera, Trifolium hispidum, and La- chenalia serotina, which form no bad specimen of what we com- menced our excursion with. Silene quinquevidnera, and S. ce- rastoideSy were here so intermingled, that one feels astonished that they had ever been separated as species : the petals emar- ginate or entire, the pubescence, and the absence or presence of spots on the petals, were marks evidently set at nought by na- ture, and of no use to any but a mere herbarium botanist or horticulturist. In addition to the above, we met with an An- themis, perhaps A, incrassata^ Loisl., though in some points it does not well agree with his description. On the 19th, we traversed the Montagne de la Clape, which is calcareous, exceedingly arid and dry, and destitute of any kind of covering higher than a Cistus. On our route to it, we in a poor and arid soil, the radical leaves are early destroyed, and the stem becomes straight, and simple, especially at the base, forming then the E. vio- laceum of authors. When, on the contrary, it occurs in a rich soil, though dry, with abundance of lateral room to grow, especially when on the road-sides, where it has been trampled under foot, its radical leaves grow to a great size, and its stem is branched from the base : it is then the E. plantagineum. The stiffness of the hairs varies much in both cases." To the above-mentioned " Catalogue," Mr Bentham has prefixed an account of our Tour to the Pyre- nees. As a translation of it will contain nearly all that I was about to say, I feel assured that my readers will excuse me for giving one, instead of telling the same thing in different words. Much, therefore, I will translate, and where I have any thing to add, that he may have omitted, I shall do so : I shall also extend the botanical notices. * This must not be confounded with L. implexa, Willd. which is evidently the same as L. etrusca^ Savi. 2 mid the P^renees^ in 1825. 159 met with Franhenia intermedia^ DG. the leaves of which were covered with a Puccinia, which may be P. Franheniw^ Link *. On ascending the hill, we found in the clefts of some extremely rugged rocks some interesting plants, but some of them too far advanced : — Buffonia perennis, Melica pyramidalis^ Piptathe- rum coerulescens^ Alyssum spinosum, Dianthus pungens^ and Lavatera mnritima, were among the number ; and in the dry grassy turf near the summit, we discovered for the first time Medicago leiocarpay nob. -f* This beautiful species is sufFruti- cose, smooth and prostrate, and may have been long passed over for Trifolium ccespitosum ; the legumes are perfectly smooth, which, with other characters, will at once distinguish it from the closely allied M. suffruticosa. From the point we found the above to the Redoute Montolieu, was a pretty long and tire- some walk : the ground was extremely rough with stones, and we saw scarcely a single plant that could recompense us. At the redoute we found the Viola arhorescens, but so far advanced that the capsules had already burst open, and scattered the seeds. From thence we kept along the sea-shore to the Isle St Lucie, walking for three or four hours of the hottest of the day on the broad sandy beach, without a single trace of vegetation, scarcely even were there any algce thrown on shore ; but we saw some shells of the Argonaiitce. On all this long track we did not meet one human being, except what constituted a large gi'oup employed in drawing their nets : they consisted of two or three men, and about twenty stout sun-burnt women, but all so dressed alike, en culottes, that it was by their voices alone we could recognise the fair sex. Little serves to amuse us, when we have nothing else, and the above circumstance contributed in no small degree, until a multitude of Statices, and other maritime plants, presented themselves to us in the island of St Lucie. Had a botanist been the first to discover this spot, he certainly must * Dr Greville informs me it is Puccinia Lychnidearum, Link ; but I do not know where that is described : it is certainly not P. lychnidis, DC. -|- Although the legumes are smooth, or free from pubescence, they are nevertheless strongly reticulated ; so that I have to regret that our provi- sional specific name leiocarpa has been adopted by Mr Bentham in his " Cata- logue." 160 Mr Arnott's Tour to the South of France have named it the Island of Statices : — ^S*^. aristata, auriculce- Jblia, diffusa, Jerulacea, monopetala, oleifolia, and reticulata, are mentioned as natives of it, and indeed we found all of these. Several Euphorbias, Astragalus massiliensis, Scorzonera par- viflora, and Juncus Gerardi (J. ccenosus, Bich. and Sm.), were among the others we gathered. In the evening, we descended along the east side of the canal, and slept at La Nouvelle, a dirty village, where we could scarcely get any thing to eat (not even fish), and dared not complain, the lady of the house using her tongue so nimbly as to keep us all in order. A bad sup- per aad a scolding hostess were not sufficient inducements for us to remain here another day ; so the next morning at day- break we began our return to Narbonne. We examined all on the west side of the canal, and obtained better specimens of many species we collected yesterday. Passerina dioica here formed thickets, and in the intervals we observed some poor specimens of Evax pygmaus, Laflingia hispanica, Bupleurum glau£um : of Tamarix qfricana. Reseda alba, and Donax mait^ ritanicus, we found a few specimens, besides several others of less note, that it is unnecessary to mention. Although we had every reason to be satisfied with our excursion to this island, there is no doubt but one would more successfully visit it, either somewhat earlier or later : the small plants, as the Evax and Laflingia, had suffered much from the heat ; and the larger ones, as the Statices, are scarcely enough advanced until the beginning of June. The Isle St Lucie was lately an island se- parated by the sea from a long narrow neck of land. Whilst they brought the canal, a branch of the Grand Canal of Lan- guedoc, down this part, it was no difficult matter to complete the isthmus, and consequently make St Lucie a peninsula : this was done, so that it is at present no island, though still retain- ing its old appellation. We finished this excursion by return- ing by Capitoul, a small village on the side oV the Montange de la Clape, where we expected to find the Atractylis humilis : we were, however, disappointed, as we got merely one-or two of last year''s stems, and some new ones scarcely emerged from the earth. Let those who can, visit this hill about the very com- mencement of May, and, above all, carefully avoid the sea- beach. and the PyreneeSf in 1 825. 161 Betwixt Narbonne and Perpignan, to which we now bent our course, is an excursion of two days. The greater part of the first we spent in the neighbourhood of the old abbey of Font- froide, once a fine building, though now the upper storey is con- verted into a miserable auberge, and the lower into a stable. Passing the village of St. Andre, we reached Donos, where, in- stead of spending the night at the village, we were most hospi- tably received at the chateau, the house of the proprietor of the estate. The first part of this excursion was very rich. Besides many species of small plants (among which may be mentioned Piptatherum j)aradoxum, Melica ciliata, Lieflingia hispanica, Briza maxima^ Cytinus hypoc'istus, Trrfblium Cherleri, and Tolpis barhata) which we met with on the hills about Font- laurier, we found, in the wood of Fontfroide, a great variety of Cisti^ all of them in flower : here were Cistus albus, populifa- lius /3, monspeliensls, crispus (both with red and rose coloured flowers), lo7igi/blius, and several states of salvifollus, or perhaps hybrids between that species and C, monspeliensis. The rarest of all no doubt was C. lofigjfoUus : of this seldom more than a single plant is found at a time, which alone would lead to a sus- picion of its hybridity ; it may have sprung from the C. mons- peliensis and C. populifolius. C. corbariensis, though indicated here, we did not meet with. This is perhaps another hybrid between C. salvifolius and C. populifolius. De Candolle has made it, in his " Flore Fran^oise,"" a variety of C salvifolius^ and Dunal, in the " Prodromus,"' though he retains it as a spe- cies, places it close to that species. Its appearance is that of a small-leaved variety of C. populifolius * ; but the peduncles ha- ving no bracteae at their base, point out the propriety of Dunal's arrangement, unless, indeed, it, as well as many other of the CistinecEj were to be turned out as hybrids, and left to the care of the florists. In addition to those mentioned as found at Fontlaurier, I ought to notice the Helianthemum guttatum, which here puts on so many appearances, that one at first would • Mr Bentham thinks that C, corbariensis arises from the young autumnal shoots of C. populifolius beginning to flower, and that it is identical with this latter species (Cat. p. 72.) APRIL JUNE 1827. L 162 Mr Arnotf s Tour to the South of France imagine they had found as many distinct species. The three principal variations were, however, that of H. guttatum Dun., in which, though the stems be hirsute, the pedicels are general- ly glabrous ; of H. eriocaulort Dun., in which the whole plant, the pedicels not excepted, is rough with white patent, bristly hairs ; and, lastly, H, punctatum Dun., of which the leaves are covered with a very short, thick, starry pubescence : these three states I believe to arise from the seed of the same plant. There is also little doubt but H. plantagineum and H. inconspicuum are only varieties of H. guttatum. Early the next morning we quitted Donos, and traversed the Low Corbieres to Cascastel, where we turned, and took a retro- grade direction by Durban and Villeseque to Sejean. In all parts of this route, we were so fortunate as find our lately disco- vered Medicaga leiocarpa ; and at Cascastel we even found an- other new species, J/, reticulata, nob., approaching M. tornata^ but differing by the legume reticulated, and furnished with a thick, bisulcated, tuberculose margin. Astragalus pentaghttis and sesameus, and Euphorbia lucida, presented themselves, but in small quantities. Malcomia africana was also rare, but the same could not be said of Convolvulus althaoides, which covered the side of a hill near Durban. In all the excursions we have made since our arrival at Narbonne, we have occasionally found specimens of Hippocrepls scorpioides, Req. a new species, not uncommon throughout the south of France, closely allied to H. comosa, but distinguished by the legume being more cy- lindrical, and nearly straight, as in Ornithopus. We arrived at Sejean about nine o'clock, and intended to set off* by the night diligence for Perpignan ; but when it arrived about an hour after, there were only two vacant places. Two of the party set off", while the other two (of whom I was one) remained, resolved to wait for another vehicle expected about eleven. It arrived, and we were fortunate, if I can apply that word to the being squeezed nearly to death between two fat Spa- niards, who alone seemed fitter for filling the whole interieur than for occupying two of the three seats on one side. Notwith- standing, the whole cargo arrived at Perpignan about four in the morning, not ten minutes after our friends, who had fared no better than ourselves. and the Pyrenees^ in 1825. 163 On the S5th, we made an excursion to the banks of the Testa, where we found in very good state most of the plants indicated there, as Andryala lyrata^ Lachenalia serotina, and Melilotus gracilis. Cistus laurifolius was scarcely yet in flower. A handsome blue flowering Orohanche (O. comosa, Wallr. ?) about the size of O. major, was here far from rare, growing on the roots of Artemisia campestris. The botanic garden is of little consequence ; but there are nevertheless several scarce plants in it, habituated to the open air. Solanum honarie7ise and Schinus molle, were in the ut* most luxuriance : there was also a fine tree of Stillingia sebi- fera. The lecturer here has 200 fr. (about £\^ Sterhng) per annum^ with 200 more to pay the incidental expenses of the establishment, as utensils, flower-pots, new plants, &c. The head- gardener is better ofl* : he has 400 fr. for the garden, and 700 for taking care of the pepiniere or nursery, with which^ however, he has to pay his assistants. The 26th, 27th, and 28th, we devoted to an excursion to CoUioure. On our way there, we gathered Vicia perennis, DC. Hypecoum grandiflorum, nob., and several other good plants, during the time that the diligence ascended the steep places of the road. Where the regular road was under repair in one place, we were obliged to take another ; and near the village of Corneille del Vercol, we observed a blue Iris on the right side of the road, which we supposed to be /. spuria. The whole summit of the hill above Collioure, between the road and the fort, is covered with Scolymus grandiflorus, regarding which De Candolle and La Pey rouse have had some discussion. Al- though De Candolle, when there, had not seen it, it nevertheless appears to be the true plant, and a very distinct species from the other two found in France. The next morning we took the road to Bagnols, and ere long found Jsphodelus fnicrocarpus and Orohanche crinita, Vir. both lately discovered in Corsica. Near Portvendres we observed in abundance Euphorbia biumbellata, Corynephorus articulattts, Anthyllus Gerardi, and Orobanche Jtetida ; and at Paullilas Lavatera olbia. From Bagnols we ascended the banks of the river to Cancompa ; nor could our time be said to be lost, when we procured Briza minor and Trifolium ligusticum. Vitex l2 16^4 Mr Arnott's Tour to the South of' France. ctgnuS'Casttts grew every where about Bagnols ; but the most interesting plant in the whole valley was Gymnogramma lepto- phylta^ Desv. The mosses were few in number, and not in very good condition. I was, however, enabled to recognize Bar- framia stricta, Schw. by its single peristome. We ought to have found Nonea lutea on the rocks about Collioure, and Are- nar'ia pephides *, La Peyr. about PaulHlas, but returned to Collioure without seeing either. On the 28th, having previously ascended the Montague Verte by N. D. de Consolation, and procured Malva Tournefortii, Alliu7n triquetrum^ Medicago siiffrutkosa (a new and distinct variety) Cytisus Ir'iflorus and candicans, we returned to Per- pignan. Thus finished this rich excursion : all the best plants were in good condition, and instead of three, there would have been sufficient employment for eight days. The whole chain of the Alberes must be stored with species of great rarity, and the northern must be even far inferior to the south or Spanish side, which we had not time to visit. ^9th May. — This day was Charles X. crowned, and conse- quently kept as a day of festivity. It is almost worth while to go to Perpignan to see their national dances ; and I regret ex- ceedingly I can give no idea of them by description. I shall never forget when, as if by the touch of a magician, all the fe- males were, at a particular part of the tune, seated on the shoul- ders of the men, and then put down again on terra jirma^ the evolutions in the dance being uninterrupted. In the after- noon, a few halfpence and sugar-plums were scattered among the peasantry. The town of Perpignan is not handsome, but the promenades are fine.;:: The features of the common people, as may be expected from the greater heat, are much more swar- thy than at Montpellier : several females were almost black, and had ev«n the thick nose and lips of the African negro. ( To he continued.) • This, so far from being the Ar. peploides of Linnaeus, does not even be- long to the same natural order : it is a Hagea or Polycarpon^ for these genera are certainly not distinct. M . Gay of Paris, who has given me a specimen from the rocks at Portvendres, named it Polycarpon pentandrum ; it is closely allied to Hagea polycarpoides. { les ) Account of the interesting Works of' Art lately discovered in the Ruins of Selinus^ by two English Architects, Messrs Har^ ris and AngeU. Communicated by Dr Traill of Liverpool.* X WO young English architects, Messrs Harris and Angell, having come to Sicily to study its celebrated antiquities, after Jong occupying themselves with those of Agrigentum, of Syra- cuse and Catania, turned their attention, in the winter of 1823, to the remains of Sehnus. In excavating amid the ruins of two great temples in that place, they discovered, on the steps of their fa4;;ades, several me- topes broken into a thousand fragments, on which might be traced portions of figures in high relief, which inspired these gentlemen with a strong desire to search for the remainder. They applied themselves immediately to new researches, and, with great labour, collected many other fragments, which they sent, with the first, to Palermo, where they proposed to unite them ; and, if possible, to restore to the arts works of such ines- timable value. But poor Harris, infected by the mephitic ex- halations of Jalico (the ancient marsh of Gonusa, against which, according to Laertius, the genius of Empedocles successfully e the invasion of Attica by those heroines ? The metopes of the temple of the citadel evince, from the rudeness of the back ground, and of the most elevated parts of the sculpture, no less than by the hardness of the figures them- selves, an extreme antiquity. The Hercules Melampyges alone is somewhat less rude ; and one can perceive that it unfolds the germs of the suc^essftil efforts at perfection which the art of sculpture was then making. Certainly the horses (a phenome- non which each may explain in his own manner) are most beau- tiful, not only relatively to the human figures, but absolutely ; and on seeing them, we are inclined to refer them to the perfec- tion of the art. lately discovered in the Ruins of' Selinus. 169 In reflecting on the very remote origin of Selinus, and the resemblances in the above mentioned sculptures, to those of the early Etruscan style, we could believe them, says the author, also the production of an Etruscan chisel. This opinion, he adds, will appear less improbable, if we re- flect, that the Siculi, from Italy, came to take possession of the island, to which they gave their name, about 300 years before the Greeks, and might have brought with them the arts which then flourished in Etruria. Yet, still it would not be erroneous to attribute a Grecian origin to the sculptures, if it be true, as celebrated scholars have maintained, that the Etruscans learned the arts from the Pelasgi or the Tyrrhenians. Hence Winckle- man recommended monuments of the most ancient Etruscan style, as the only remains which could give an idea of the ear- liest specimens of Grecian sculpture *. Of the Phoenicians, the author thinks it unnecessary to say a word ; because they did not found a single town in Sicily ; be- cause they had no connection with it, but for a short period ; because they had no intercourse with the Siculi, but as traders ; because, when they came as allies to the Segestans, Selinus had already existed for ages ; because they did not cultivate the fine arts ; and because we possess nothing of their works, but a few rude coins. With regard to the sculptures of the temple of The Pillars, the author remarks, " There can be no doubt that they are the productions of a Grecian chisel."" From their style being quite similar to the marbles of Mgina, sculptured about sixty years before the time of Pericles, we not only discern (in com- parison to the above mentioned sculpture) a great progress in the art, but a high degree of perfection. The drawing of the figures is correct and elegant, the heads beautiful and attractive, the forms rounded, the action simple and natural, the drapery disposed in compressed and parallel folds, with much graceful- ness, the shadows as well as the lights, distributed in soft grada- tion. Another characteristic excellence of these figures, ob- • The justice of this remark has since been confirmed by the discovery of the .^gina marbles, in which the style is exactly what has been hitherto called Etrus- can, forming the long lost link which connects the stiff outline of Egyptian art with the perfection of Grecian sculpture— Tr. 170 Works of' Art lately discovered in the Ruins qfSelinus. serves the author, is their being in such bold relief, that the greatest number touch the ground only in a few isolated points. From this it is evident, he adds, that, when they were executed, already long experience had taught, that, in relievos exposed to the open air *, the detaching of the figures contributes much to the distinctness of the groups, and to the harmony of the gene- ral effect. Their execution, he adds, is in every respect worthy of the school which preceded that of Phidias. We have before us a letter of Sig. Hittorff, written from Se- linunte, 30th December 1823, to the editor of the Journal of Arts in Stuttgard, which seems to confirm the above remarks. it is to be regretted, that the theatres of Taormina and Cata- nia, and the temples of Girgenti, had not left leisure to the Ger- man artist to enjoy his visit to Palermo, and to follow, as dis- coverer and illustrator of the metopes of Selinus, the unfortu- nate Harris, on whose memory he bestows a tear, which we have pleasure in recording. On the Magnetic Influence of the Heat produced by the Solar Rays^ S^c. By Mark Watt, Esq. Member of the Werne- rian Society. Communicated by the Author. xjLS the curious and diversified phenomena disclosed by recent investigations into the laws of magnetism, and the delicate im- pressions of which they are susceptible, have become objects of general interest ; perhaps a short statement of a few experi- ments made on the magnetic needle last spring aftd summer, in the Isle of Wight, may not be unacceptable. A magnetic needle of about three inches long was used, and was suspended by a hair, which hung from a stand, andj sur- rounded by a sheet of pasteboard, to protect it from any slight current of air that might pass through the room. The needle gave similar indications to another, which was boxed in the usual way. It is generally supposed, that when a magnetic bar is placed * Che ne rilievi da esporsi in campo aperto il distaceo delle figure. Mr Watt on the Magnetic Injiuence of the Solar Rays. 171 free to move, it is not easily prevented from evincing the influ- ence of that law which obliges it to rest parallel with the mag- netic meridian ; although the intermediate body should be ap- plied close to the bar, — no body interposed at any distance (if not attractive) having any influence on it whatever, I found, that, by coating the needle with bees-wax, or putty, the direc* tive power might be variously modified ; and that, by making the coating sufliciently thick, the polarity of the needle might be so far counteracted, as to produce for the time a total cessa- tion of its action. The magnetic bar, however, which was sus- pended and balanced from the centre, gave some indications of its polarity, though immersed in the midst of about a pound of putty, — a proof, amongst many, of the subtilty of the magnetic fluid. A needle traversing on a pivot is of course unfit for such trials ; but when the needle is suspended horizontally by a hu-- man hair, and the other end of the hair fixed to the top of a glass-bell by a little wax, or suspended in any other way, it in- dicates much slighter influence than in any other situation ; and a human hair doubled will support nearly /^ths of a pound, a horse-hair one pound avoirdupois with ease, and, if loaded, by, degrees considerably more. I gradually increased the thickness of a layer of bees-wax around the suspended needle, covering both the poles ; and I perceived, that, as the thickness of the coating was augmented, the north pole of the needle seemed to shew greater tendency to move westward ; and, with a coating of wax of about 1 J inch di- ameter, the needle pointed N. W. for several hours, and in the course of ^ome days went back to N. N. W., where it remained almost stationary. I repeated this experiment several times, with nearly the same results. I also repeated the experiment with another small magnetic bar of about 2 inches long, and Jth of an inch in breadth and thickness, making the needle and bees-wax swim in a large ba- sin of water. I incased the needle in a pound of bees-wax, making it into a cylindrical shape, of half a foot long and 2| in- ches in diameter. If the south pole of the bar was placed to- wards the north, it turned round the pound of wax with ease ; and when it became steady, it pointed several degrees more to 172 Mr Watt on the Magnetic Injluence of the Solar Rays. the westward than the common compass needle. As the ten- dency of the north poles of these magnets was to verge towards the west, in the direction of the variation, when placied under these circumstances, it seems to favour the idea that the cause of the variation is distinct from the law which gives to the mag- netic needle its polarity. It appears that, when the magnetic needle finds itself in what may be termed a new situation in respect to the influence that may affect it, a considerable time is often necessary before it can adjust itself to those alterations, making sufficient allowance for the time it would take to settle, when any way set in motion. This is exemplified by fixing two magnetic bars on the circumference of a circle, at the distance of 90° from each other, the circle being suspended by a hair from the centre ho- rizontally, and balanced so as to move round easily ; and the two north poles of the bars placed outwards, and the south poles pointing to the centre of the circle, in the direction of the radii. If the north pole of a powerful magnet is placed between the north poles of the bars, at the distance of two inches on a sepa- rate stand, they commence to vibrate, and the alternate repul- sion of the magnetic bars by the third magnet, causes the circle to oscillate for nearly half an hour ; and, when it ceases, the re- pelling magnet, if the needles are equal in power, will be exact- ly between them. If one is stronger than the other, the strong- est will be farthest off*. The same phenomenon would take place in an inverse ratio, if an attracting magnet was introduced between the bars ; the strongest resting nearest the attractor. This is too refined an experiment to be shewn by a common magnet, but is exhibited by considering the north pole a large magnet. If we place two magnetic bars across each other at right angles upon a piece of cork, swimming in water, the strongest needle will rest nearest the north, if alike equidistant from it. Though the pointing of the needle was altered by its being surrounded by wax, it did not lessen its sensibility to the power of other attracting bodies ; but seemed, on the contrary, rather to increase it, by leaving it more free from the influence of the polar attraction. One object I had in view, by diminishing the polarity of the needle, without interposing any other attracting Mr Watt oil the Magnetic Influence of the Solar Rays. 17S body, was to observe what influence the solar rays might exerk on it. I exposed pieces of tin, zinc, copper, and sealing-wax, to the rays of the sun for two hours, and, being considerably heated by this means, they sensibly attracted the magnetic needle, pro- ducing a variation of a few degrees. When heated by the fire, they had no effect on it. The copper and sealing-wax appear- ed to possess the greatest power of attraction. The rays of the sun, as far as I could judge, when passed through a lens, caused a variation of two or three degrees. And it also appeared to me, that, when the focal rays were passed through different co- loured glasses, and made to impinge on the side of the wax sur- rounding the needles, that they had different effects on the op- posite poles. The blue rays formed in this manner, seemed to attract the south pole, and repel the north. The blue and vio- let ray produced a variation of several degrees, when directed to the south pole. The rays of the sun, whether undivided or separated by the prism, do not appear to exert their influence long on the mag- net, in producing a variation not above a minute ; and this arises, I suppose, from their coming into close contact with it ; and from their being so suddenly generally diff*used over the whole needle. It requires favourable circumstances to observe the effect of these delii^ate influences ; and I should feel indebt- ed to any one who would try these experiments with powerful lenses, to attempt a farther illustration of them. When the magnetic needle is surrounded with wax, or glass, and made to swim on the surface of water, it moves to much gentler impressions than when placed on a pivot. The wax al- so prevents the rays of light from coming into such full contact as when the needle is uncovered. A shade should be thrown over one pole, when the other is made the subject of experiment. And the vessel ought to be large in which the magnet swims, else it will not rest in the centre, being attracted to the edges; and it should be marked at the bottom, to enable the observer to detect the motions of the needle. ( 174 ) List of Rare Plants which have Floxvered in }he Royal Botanic Garden, Edinburgh, during the last three months ; with a Description of several new species. Communicated by Dr Geaham. \Oth June 1827. Acacia lunata. Loddig. Bot. Cab. t. 384. A. lunata ; phyllodiis falcatis, basi vix attenuatis, oblique mucronatis, uni- nerviis, margine antico uniglandulosis ; pedunculis racemosis, axillaribus, phyllodios sequantibus ; capitulis numerosioribus, paucifloris ; floribiis 6-fidis. Description — Shrub free growing. Branches scattered, spreading, slen- der, smooth, angular. Phyllodia falcate, mucronate, glaucous, 1^ inch long, \ of an inch broad, having a distinct single rib not quite in the centre, veins very obscure ; as the branches spread out nearly at right angles, the phyllodia on the lateral branches turn towards the upper side, but on the upright shoots they spread on all sides. Peduncles axil- lary, about the length of the phyllodia, sometimes a little longer, often rather shorter ; pedicels simple. Flowers capitate, capitula numerous on each peduncle, generally four flowers in each head. Calyx 5-phyl- lous, phyllse ovate, pointed, adpressed, corolla 5-cleft ; tube campa- nulate, Umb spreading, segments lanceolate. Stamens very numerous, filaments very slender, anthers rounded. Style longer than the fila- ments ; germen lateral ; the whole capitulum of a deficate and beautiful yellow colour. Seeds of this very elegant species were received from Mr Fraser from New Holland, under the name of Acacia acinacifolia, in 1821. We have re- marked, as stated by Messrs Loddiges, that it never produces fruit in our greenhouses. Acacia mucronata. Banksia integrifolia. Br. Trans. Linn. Soc. vol. x. p. 206. ? Description — Trunk erect. Bark dark and cracked. Branches at first erect, ultimately spreading, covered with soft, yellowish pubescence when young. Buds in whorls, but generally all, excepting one or two, abor- tive. Leaves petiolated, subverticelled or scattered, ligulate, coriaceous, dry, stiff, undulated, green and naked above, below covered with white tomentum, through which many small reticulated veins appear, when young covered with yellow tomentum on both sides, sinuato-serrated, occasionally entire, serratures mucronate, middle rib prominent behind. Flowers terminal, head 2-3 inches long, less than half the length of the leaves, which are generally crowded at its base. Calyx silky. We have a plant which has not yet flowered, but which I can consider only a variety, which is more vigorous in its growth, the trunk swollen into joints, the branches more erect, the leaves more decidedly verti- celled, more of them entire, and many of them lanceolate, having evident nearly transverse primary veins, the pubescence on the young shoots being red-brown. Raised from seeds sent by Mr Fraser from New Holland in 1819. Cactus heptagonus. Cycas circinalis, mas. This plant, whose stem is 44 feet high, nearly cylindrical, and 6 inches diameter at the base, has flowered for the first time with us this spring. Its appearance differs from the figure given by Achille Richard, in the catkin being sessile, cylindrical, less compact, the scales much shorter, more dilated at their outer extremities, so as to give them a deltoid or 1 Dr Graham's List of Rare Plants, 175 almost halberd shape, and their beaks are nearly equal to their own length. The anthers are crowded on the lower side of the scales, and are generally connected in threes or fours. Dracaena obtecta. I), obtecta ; arborea, foliis lanceolatis, acutis muticis, basi dilatatis, confertis, planis, panicula terminali composita, folia superiora aequanti, congesta, ramis elongatis ascendentis, floribus sparsis, bracteis integerrimis, su* perioribus minoribus. Description Stem round, scarred by the separation of the leaves, 12 feet high. Leaves crowded at the top, and would probably have re- mained on a great part of the stem, had they not been cut off for want of room, lanceolate, acuminate, but without mucro, attenuated towards the base, but then dilated, and stem clasping, thickened along the middle, nerves numerous, slender, parallel ; a large bud is formed in the axil of each leaf, but proves abortive, excepting near the top, and at the period of flowering, when several offsets split the leaves, in the axils of which they spring, and pushing through, appear on the lower side. Panicle terminal, large, crowded, compound, scarcely ex- ceeding in height the tip of the upper leaves. Bractece situated at the origin of each branch of the panicle, resembling miniature leaves, quite entire, becoming smaller and smaller upwards in the panicle: at the lower branches of the panicle there are two, *one large and below the branch, the other much smaller and above it. Flowers ses- sile, numerous, scattered, and highly perfumed. Corolla 6-parted, re- volute, afterwards approximating at the apex, and withering. Filaments subulate, revolute ; antliers small, green ; pollen yellow. Germen ovate, green, trilocular ; style somewhat tapering upwards to the S-cleft stigma. Every part of the flower except the germen and anthers pure white. This plant was raised from seeds sent by Mr Eraser in 1820 from New Holland, without name, or any statement of the particular district from whence it was obtained. It grows vigorously when placed in a large tub with rich soil. The'specimen which has flowered was at first kept in the stove, but for two years has been in the greenhouse. A specimen plant- ed in the open border is scarcely alive. Dryas integrifolia. Liparia sphaerica. villosa. Lomatia longifolia. Magnolia cordata. Flowered in May on the open wall, in a sheltered situation. Omalanthus populifolius. O. pupulifolius ; frutex erectus ; caule deliquescenti ; foliis sparsis, deltoid deo-rhomboideis, acuminatis, integerrimis, subtus albidis, margine cal» losis ; stylo bifido, segmentis revolutis, stigmatibus terminalibus obli- quis, germine lenticulari. Description Stem erect, round, red on the side next to the light, green and spotted with red on the other, about seven feet to the first branches. Branches proceeding from a point, equal in size, and leaving no leading shoot, every subdivision taking place in the same way ; number of branches proceeding fro«ni one point various, but very commonly three. Leaves soft, pendulous, deltoideo-rhomboid, with a red callous edge, acu- minate, upper surface bright green and dull, lower white ; while decay- ing the whole becomes beautimlly red ; middle rib red and strong, with many oblique straight veins proceeding from it to the edge of the leaf, and united by many small transverse, somewhat reticulated secondary veins. Petiole red, somewhat channelled, nearly as long as the leaf, ha- ving a concave gland projecting forwards from its point of union with the leaf. Buds mclosed in large, pointed, convolute sheaths. Racemes 176 Dr Graham's List of Rare Plants. terminal, nodding. Flowers monoecious ; female flowers at the base, male flowers towards the apex of the racemes, and much more nume- rous ; female flowers solitary, male generally three together, both pedi- celled, but the pedicel of the female rather the longer, and lengthening still farther as the fruit ripens. Bractece at the base of both, rounded, bi- glandular. Calyx in both flowers diphyllous, kidney-shaped, especially in the male, entire, glandular, caducous in the female flowers. Stigmata two, terminal, oblique, round, slightly bordered, green. Style divided to about two-thirds of its length, segments revolute, green, their upper surface covered with a reddish, glandular excrescence, which is conti- nuous from the one segment to the other, and broader than they are. Germen lenticular, more rounded as the fruit advances to ripeness, bi- valvular, bilocular, loculaments with one seed in each, dissepiment con- trary to the valves. Seeds oblong, flattened towards the dissepiment, from the upper part of which they are suspended : outer coat bard and dark, white and shining on its inner surface ; embryo straight. Male fimxen compressed ; stamens six ; anthers geminate ; filaments united at the base. This plant is a native of New Holland, from whence we received it by the kindness of Mr Fraser in 1824. It sprung from seeds sown among earth in which growing plants were imported. It has been always kept in the stove, though it will probably thrive in the greenhouse. I am indebted to Dr Hooker for pointing out to me the description of the ge- nus by Adrien de Jussieu, in his account of the EuphorbiacecB, a work I had not before seen. The form of the stigma and the germen are dif- ferent from the account and figures given by that author ; the leaves are scattered, not alternate, and I have not observed that in our plants the male and female flowers are ever on distinct racemes ; yet I caxmot at all doubt that the present species belongs to the genus Omalanthus. Oxalis bipunctata. O.bipunctata; scapo multifloro, petiolis vix longiori, compresso, petiolisque pubescenti ; foliis ternatis, foliolis rotundato-cbcordatis, subtus pubescen- tibus, supra subnudis, petiolis cylindraceis; sepalis obtusiusculis, apice bimaculatis ; staminibus 5, stylos superantibus. Description Leaves bright green above, paler (occasionally purple when young) below, very slightly acid, all radical, ternate, leafets broadly ob- cordate (if inch from base to apex, 2^ inches across), pubescent on the lower side, very sparingly so on the upper, ciliated, middle rib promi- nent below, and giving otf two strong arching veins on each side, those nearest the base being generally branched on their outer side. Petioles round, 5 inches long, pubescent, hairs spreading and lax. Scapes nume- rous, pubescent like the petioles, and rather longer than them, slightly compressed, somewhat irregularly divided at the top, but generally into three branches, which are sometimes again divided, though most fre- quently the flowers proceed directly from their extremities, on long, round, spreading pedicels. Pedicels of the bud nodding, of the fruit re- flected. Bractea at the primary division of the scape a short entire sheath, at the secondary divided into small leafets, placed one on the outside of each pedicel. Calyx green, with a few adpressed hairs, leafets lanceolato-elliptic, with narrow membranous edges, each having two ob- long, approximating orange callosities on the outside of the apex. Pe- tals lilac and veined, subspathulate, truncate, unequally crenate at the apex, spreading. Stamens 10, 5 shorter and 5 as much longer than the styles ; filaments colourless, united at jJ^e base, and above the union hairy ; anthers yellow, cordate, attachedly their backs to the filaments. Germen nearly smooth, green, divided into 5 oblong lobes, each contain- ing several seeds ; styles 5, stout, nearly colourless, hairy ; stigmata lobu- lar, deep green, projecting between the longer filaments. The plant flowered abundantly in the stove of the Royal Botanic Garden^ Edinburgh, in April and May 1827, but has not produced seed. Roots were received in 1823 from Mr Harris at Rio de Janeiro, by Captaiti Dr Graham's List of' Rare Plants. 177 Graham of his Majesty's Packet Service ; but other specimens, which are extremely similar, were in the collection before, though it is not known from whence obtained. These differ from the plant described, only in having the back of the leaf more reticulated, the anthers paler, and the shorter stamens equal in length to the styles. Passiflora alata, var. pedunculata. I have already noticed three varieties of this beautiful species cultivated in the Botanic Garden at Edinburgh. The present was raised from seed brought by Captain Graham of his Majesty's Packet Service from Rio de Janeiro in 1823. It is as handsome as the finest of these, and in fo- liage very much resembles the var. insignis. It is, however, easily dis- tinguished from all the others, by the peduncle being equal in length to the petiole ; by the bractese being very large ; by the stipulse having one or two teeth on one side ; by the nectaries being rather shorter, and opening wider. Penaea imbricata. P. imbricala ; foliis rhombeo-ovatis, acutis, integerrimis, quadrifariam im- bricatis vel patulis ;.ramis tetragonis, decussatis, floribus terminalibus ; bracteis paucis, nudis, coloratis, sagittatis, folio minoribus ; laciniis co- rollse obtusis, medio plicatis. Description. — Shrub erect, bark brown and cracked; brandies numerous, decussating, ascending, four-sided. Leaves sessile, rhomboid-ovate, co- riaceous, somewhat pointed, decussating, generally spreading on the branches, imbricated towards the flowers, naked on the back, middle rib distinct, with a few obscure lateral veins. Bractece few, sagittate, with- out cilise, coloured. Calyx diphyllous, segments linear, coloured, alter- nating with two hastate bractese nearly on the same plane. Corolla rose coloured, tubular, tube furrowed, inflated at its base, tapering somewhat to the throat, less than double the length of the calyx ; limb 4-parted, segments rounded, with a slight point in the centre, folded back in the middle, about half the length of the tube, and slightly contorted. Sta- mens 4, alternating with the segments of the corolla, and attached to the throat ; filaments subulate, coloured ; anthers large, cordate, as long as the filaments ; pollen yellow. Germen 4-lobed, 4-celled, pointed ; style terminal, 4.sided; stigma cajtitate, 4-cornered. liaised from Cape cf Good Hope seeds, kindly communicated to the Royal Botanic Garden, Edinburgh, by Mr Alton, in 1823, and kept in the greenhouse. Primula longiflora. Psidimn chinen.se. StercuHa Balanghas. Strophanthus divergens. S. divergens ; frutex erectus ; ramis oppositis, patentissimis, foliis oppositis, lanceolato-oblongis, nitidis, stipulis parvulis, acuminatis, intra axillari- bus, pedunculis terminalibus, dichotomis, segmentis calycinis bracteis- que erectis, subulatis. S. dichotomus ; /3 chinensis, Bot. Reg. t. 469. Description. — With us a shrub of nearly 2 feet high, and probably ne- ver free growing, erect, and certainly in no degree sarmentose or climb- ing. Branches numerous, and spreading at right angles. Bark brown, and thickly sprinkled with light coloured warts. Leaves crowded on the extremities of the branches, suberect, on short petioles, opposite, lanceolate -oblong, or sometimes inclining to ovate, shining, having a strong middle rib, and strong nearly transverse veins uniting in arches near the edges of the leaf, mucro very small. Stipulce very small, pointed, one at each side of the axils of the leaves. Pedmicles termi- nal, once, twice, or rarely oftener dichotomous : often three buds form APRIL JUNE 1827. M / 178 Dr Graliam's List of Rare Plants. at the end of the peduncle ; the central one first expands, and after- wards the others m succession, but not very frequently two at a time, unless the peduncle is more frequently divided. Bractea subulate, one on the outside of each pedicel, and about half its length, deciduous ; two similar but smaller bractere are placed opposite to each other, about the middle of each pedicel, and from the axils of these, other flowers push, or [)rove abortive. Calyx 5.-])arted, segments green, subulate, erect, and very similar to the bractecg. Corolla funnel-shaped ; tube cy- lindrical, and nearly twice as long as the calyx ; fatias campanulate, crown- ed ; corona of 5 biparted blunj^ white teeth ; limh cut into 5 linear seg- ments (about 2 inches long) : in the bud, these segments form a long- twisted beak, but afterwards spread wide ; colour ot the coroUa yellow, streaked and sprinkled Avith red on the inside of the throat and base of the lacinitie. Filaments gibbous, adhering by their backs to the tube of the corolla, and, as well as the inside of the campanulate portion of the corolla, hairy ; anthers sagittate, adhering to each other and to the stig- ma, each terminated by a long awn. Germen round, lobular, green ; style ^ 'i^ stout, cylindrical, white; stigma angular. * -ISeedling plants were receiA'-ed several years ago from Valley field, the seat of Sir Robert Preston, but their history could not be ascertained. Have been kept in the stove, and flower freely. There is a specimen in the Banksian herbarium, v.hich, from my own recollection, I would have said is hot haiiied, but marked from China ; but, according to the Bota- nical Register, it is there considered a variety of .S*. dichotomus; and as 1 took no notes when I saw the specimen above two years ago, it is pro- bable I am wrong. It must, I think, be considered specifically distinct. Trixis auriculata. T. auriculata ; fruticosa ; foliis sessilibus, auriculatis, pubescentibus, sub- tus tomentosis, sparse denticulatis, paniculis axillaribus terminalibus- que, divaricatis, paucifloris. Descriptiox. — Stem woody, round. Bark brown, cracked. Branches green, woolly, flexuose. Leaves scattered, at length revolute from the apex, sessile, winged, lanceolate, ciliato-deiiticulate, j^ale green, densely pubescent above, covered with yellowish short tomentum below, glu- tinous •, wings rounded, quite entire, stem clasping, at first spreading, flat, afterwards revolute in their edges. Peduncle axiUary, generally supporting three flowers, round,- about half the length of the leaves, spreading^ and afterwards divaricated. Pedicels spreading, at length divaricate, as well as the peduncles pubescent, and one of the pedicels generally provided about its middle with a small ovate leaf. Pe- duncles, pedicels, and reflected calyx, become brown, and long remain attached to the plant. Flowers nodding; calyx persivSting, calycled, cylindrical, green, of 8 equal, linear-lanceolate keeled phylla ; calycle persisting, of 5 or 6 unequal, lanceolate leafets, spreading at the apex, one often approaching in size to the calyx. Corolla white, pubes- cent on the outside, bilabiate; outer Up much the largest, reflected, its edges involute, apex 3-toothed ; inner Up revolute, cleft to its base ; faux inflated ; tube curved outwards. Anthers brownish-yellow, ex- tending from the throat to the stigma ; spurs^ two from the base of each anther, somewhat waved, nearly as long as the filaments, near- ly colourless ; filaments inserted into the upjjor part of the tube. Stig- ma cleft, revolute, yellow ; style tumid at the base, and slightly swell- ing towards the stigma, nearly as long as the outer lip of the co- rolla, white. Seed long, pubescent, surmounted with a little spreading saucer, the ed»es of which support the pappus, and the style is inserted into a little elevation in the centre ; pubescence tubular, and yielding from its extremity a transparent fluid. Pappus sessile, yellow, hair-Hke, rough, reaching to the limb of the corolla. Receptacle subpilose, pitted. This plant was received in 18^4 at the Royal Botanic Garden, Edinburgh, from M. Otto, Berlin, under the name of Perdicium brasiHense ; but I 3 Celestial Phenomena from July 1. to Oct. 1. 1827. 179 entirely agree with Dr Hooker that it is a new species, and I adopt the specific name which he suggested. Has been kept in the stove. In the last Number of this Journal, I described, under the name of Euo- nymus scandens, a species which I believed to be new. Its close re- semblance to E. echinata of the Flora Indica was apparent ; but I way led to suppose our plant different, from having received it from the Bo- tanic Garden at Calcutta under the name which I adopted, and from Dr Wallich having stated as a character of his E. echinata, the transverse veins of the leaves. Dr Hooker, however, has since then obligingly compared specimens which I gave him of our plant with specimens of E. echinata sent to him by Dr Wallich, and he assures me they are pre- cisely the same, the veins of the leaves being oblique in both. The specific name of echinata must therefore supersede that which I had adopted. A figure of the plant will presently appear in the Botanical Magazine. Celestial Phenomena from July 1. to October 1. 1827, calcii- lated for the Meridian of Edinburgh, Mean Time. By Mr George Innes, Aberdeen. The times are inserted according to the Civil reckoning, the day beginning at midnight. —The Conjunctions of the Moon with the Stars are given in Right Ascension. JULY. D. "• / // D. / M 1. 37 5 6Dv ^ 16. 9 greatest elong. 2. 12 53 61)11 17. 37 6 d?i^n 2. 6 55 54 ]) First Quarter. 19. 11 18 9 d D^ « 2. 11 26 1 dOh 19. 18 7 2 ^0¥ 2. 22 15 50 5 near t> ss 20. 20 16 35 d? « 3. 4 6 45 c5D«TTJ 21. 20 40 55 d ])«' n 4. 3 2 48 6 D^Tlje 22. 3 52 30 6D9 . 4. 16 42 43 6D2cc=^ 22. 12 46 32 dDb 5. 3 59 45 6^^3S 23. 17 6 enters SI 5. 13 33 28 6 D * — 23. 17 17 19 6D6 5. 17 59 47 6D^^ 24. 37 26 % New Moon. 5. 22 8 19 Em. I. sat. 11 24. 21 5 43 d ]) 1 «2o 5. 22 31 15 6Di^R 24. 22 8 53 d ]) 2« C25 5. 22 33 31 ^ D 2^nL 25. 18 51 53 dDo^ fi. 57 12 6])vTli 26. 3 4 41 6D^ 7. 2 57 18 6 D p Oph. 26. 4 46 d?b 7. 23 1 39 dD2^ t 26. 4 38 27 6D*^ 8. 22 22 22 O Full Moon. 28. 5 31 48 6D- SI 9. 3 9 5 6 D¥ 28. 21 40 27 d?^n 9. 23 21 53 6])fin 29. 11 46 25 d D -y. 13. 30 46 6Q6 30. 10 13 50 6 })«nj 15. 6 34 14 6D^H 31. 9 44 26 dDxTl^ 15. 20 27 38 ( Last Quarter. 31. 14 52 2 D First Quarter. 16. 11 50 49 d9nn 31. 23 48 30 d D 2a:t- m2 180 Celestial Phenomena from July 1. to Oct. 1. 18S7. AUGUST. D. H. , /, D. H. / // 1. 17 1 58 6 1)'^K^ 21. 12 16 33 6D9 2* 6 35 3 6 1) lATTL 21. 12 21 43 dDc? 2. 6 36 22 6 D2^nL 21.. 12 29 56 9 near ^ 2. 9 7 dDvTTL 22.* 14 21 26 New Moon. 3. 11 58 .57 6 D p oph. 23. 14 36 d h«f n 4. 8 38 61)H- t 23. 23 31 42 enters TTJ 6. 23 59 55 c5])¥ 24. 11 19 34 6D^ SI 6. 9 45 52 6 DM1 26. 1 25 38 6DV 7. 5 23 12 O Full Moon. 26. 15 34 4 dD^TlJ 11. 15 2 13 6 D^K 27. 15 6 40 ri D^TTl 13. 53 46 c^0? 28. 5 16 14 d])2«^ 14. 9 10 23 d ?^n 28. 22 44 .48 d])4?=^ 14. 11 40 17 ( Last Quarter. 29. 12 33 36 d D 1/3 TTL 15. 18 14 28 dD^ « 29. 12 34 56 d ]) 2 /? Ill 18. 3 33 24 d ]) V n 29. 15 8 47 dD'iTL 19. 2 15 45 61)h 29. 21 8 33 ]) First Quarter. 21. 3 47 28 6 D 1 « ss 31. 1 22 39 69-Sl 21. 4 50 22 d )) 2« 25 31. ^ greatest elong. 21. 11 27 25 dD? SEPTE MBER D. If- / // D. H. , ,, 2. 7 6 31 d])¥ 20. 20 30 53 d D^ 2. 18 37 32 6))P>n 20. 21 9 57 Im. III. sat. 1/ 3. 22 22 52 6^6 21. 3 11 35 New Moon. 6. 14 22 5 O Full Moon. 22. 5 33 24 6 $/2Ti]e 6. 9 50 37 66- ^ 22. 18 1 23 d D- V (>. 13 12 7 Im. III. sat. 7/ 22. 21 57 29 6 DaTlJ 8. 25 dD^ K 23. 20 3 16 enters ::£:= 9. 22 32 38 d anges from 30" to 40°, and the calm moderate days, on which it ranges from 3° to 4°, were so unlike the same days in England, that I considered it might be useful to know the fluctuations of the thermometer upon these days, to see if Uiey might assist in forming or explaining some general rule that might account for the distribution of heat, and change of tem- perature. As I have neither time nor inclination to indulge in lengthened speculation on the subject, I shall give you the results of my ob- servations, made with great care, from which you will sec that the thermometer, on these hot days, fluctuates in a most surpris- 2S6 Rev. J. Macgarvie's Thermometrical Observations at ing manner, and that, were a man to take only the means at 7 A. M., 1^ P. M., and 4 p. M. ; or ten in the morning and ten at night, as others propose, he might obtain the extremes of the range ; which might give him data for determining the tempera- ture of the earth ; but they cannot be depended upon, when in- tended to furnish correct notions respecting the temperature of the atmosphere, and its variations. The thermometer employed was the very delicate one made by Troughton, formerly in your possession, on which, you are aware, all dependence can be placed. Register of the Thermometer, at Pitt- Town, New South Wales, on the hanks of the Hawheshury, on 5th January 1827, a fair ave- rage midsummer day, with a strong cool breeze, blowing all day. At mid-day, grass 88°. Sand 98°. Water 78°. Air 79^° to \Q^ A. M. 77r 10 30 78 11 m 11 30 77 11 50 78| 12 80 12 30 80 1 84 1 30 811 1 40 82i 2 83i 2 15 821 2 40 82 3 81| 3 30 81 4 81 4 30 80^ 4 45 80 5 791 5 15 79^ 6 81 6 30 791 6 40 79 7 78| 7 30 78 9 m strong cool gusts of west wind, clear sun, hot. Av^erage rise in the hour 2 degrees. Strong cool breeze increasing. Wind fallen, descent in 50 minutes |ths oi a degree, rage rise in the hour a half degree. Ave- Average rise in half an hour 4 degrees. And a shade less, wind nearly ceased. At this rate, not to be depended on, only for a few minutes. Breeze. Ditto fresher, and hot. Average rise 3ith degrees in the hour. Sun overcast, breeze strong, descent 1 |th degrees. Breeze strong, sun bright. Ditto, do. descent 1 ^ degree per hour. Ditto, do. increasing. Ditto, do. overcast. Very strong, loud, shrill wind, descent 1 degree. Severe gust. Very violent gust, descent half a degree. Nearly calm. Still ditto. Cold breeze, descent fths of a degree. Sunset. Moon clear on thermometer. Thus throwing out the 84% at 1 o'clock, for which I will not be answerable, the rise from 10 to 2 is equal to 5|°, while, to fall the same quantity, it took six hours, making about 1 1° in the one case, and 1° in the other, per hour. Pitt-Tozvn, New South Wales. 9m II. Register oj the Thermometer ^ on 6th January 1827, at Pitt- Town, on the banks of the Hawkeshury, being a fair average midsummer day, with a very strong cool gale blowing during the whole day. Thermometer in sun 92*^, sand 98°, water 78^ evaporation in a strong cool breeze 65° in a minute and a-half. Thermometer 20 feet from the ground, and in the shade. 6^ A. M. 70^ Sky clear, air cool, calm. 11" 30', 40' 770 Rise P; and from 11 &50' to 12 equal 1« 6 30 71 Rise 3" per hour. 12 78 7 73 12 15 78 7 30 74i Rise f. 12 20 79 Strong breeze, rather 8 73| Beautiful clear sky, sun iiot. coming more to 12 30 79 north, no wind. 12 40 79i 8 5 721 Crickets lively, which they seldom are, till thermometer about 74«. 12 50 80 Strong, somewhat hot ; not suffocating, nor painful ; sensibly warmer than at 12 h. 8 15 73 Rise 210, and a shade 8 25 73| more ; hot breeze. 8 30 73I 1 8O4 8 45 74 Calm, agreeably warm, rise ^. 1 30 1 55 81 81i Rise 1^. 9 74 A shade less, wind now 2 81 perceptible, swallows 2 20 81i A strong and violent lively about the gust of cool wind. houses. 2 40 8U Rise i°. 9 10 74| Wind brisker. 3 82 9 20 75' Sun more to the north, to which the front of the house is situated. 3 20 82i Strong cold breeze from W. or N. W. with clouds. 9 30 75 A shade more, slight W. or S. W. wind. 3 40 82 Clouds over sun. 4 824 Clear of clouds; rise \^. 9 40 76| Slight long clouds from 4 30 8I4 south to north. 4 45 81 9 45 75| Rise 2°. 81 10 76 Wind getting brisker. 5 81| Sun not clear ; fall 1°. 10 10 76^ Strong gust, wind 5 30 8O4 Sun in a haze. warm from west, and 5 45 80 And a shade less. from the interior. 6 79 FaU ir. 10 20 77 Strong warm Avind. 6 15 79 10 30 77 Very strong wind in 6 30 78| Clear, calm. gusts. 6 50 78 Ditto a shade less. 10 40 m A powerful gale from 7 77i Sun down ; horizon hazy ; fall 1|^ 10 45 77 Do. * 7 15 76 Moon clear. 10 50 774 9 76 10 55 774 Very violent gust ; wind cool. 1 1 Here, we see the thermometer rose gradually from six in the morning, till four in the afternoon ; at least \9>\ degrees in ten 238 Rev J. Macgavvie's Thermometrical Ohservations at hours, or about a degree and a quarter an hour ; and that it fell from 4 to 7.15 o'clock, G| degrees, or about two degrees an hour. From 10 a. m., when it was 76'', to 4 p. m., when it was at its maximum 82^% it rose about a degree an hour, jthe air re- ceiving heat slowly, and parting with it speedily. These registers furnish information only respecting the in- crease and decrease of the heat of the atmosphere, but no ac- curate rule can be drawn from them respecting the minute in- cremental differences, in small portions of time. To secure an accurate account of the regular changes undergone by the air, at very short intervals, I consider a matter of some importance in arriving at any general law that may govern the distribution or increment of heat in the atmosphere. In every climate, the general characters of the days may be easily discovered by ob- servation, and brought under a few heads. Accurate observa- tions of the changes produced on the thermometer during these daysyhowever fewin number, if made at very short intervals, would be much more satisfactory to the meteorologist, than observa- tions made only at morning, noon, and night. These give the extremes of variation, but all the delicate shades and tints of the picture arc lost ; for the changes on some days, in a few hours, are almost innumerable. To use, therefore, a homely Botany Bay simile, we see, by the one mode, only the outside of the bush, but we wish to see all the delicate flowers, leaves, and pods, of which it is composed. The following register of two days, kept in this manner, will show very clearly that an equal and gradual increment very frequently takes place in the early part of the day, but is not to be depended upon when heat has come to its meridional or vertical point, which is most frequently between three and four o'clock r. m. The register was kept with great accuracy to each quarter of a degree, and every variation and change .was marked. The 7th and 8th of January were not fair average days of close suffocating heat, that could be depended upon. The 9th and 10th of January were particularly favourable. It must be recollected, that the sun is now nearly vertical, being on the tropic, and not much more than ten degrees from our zenidi at mid-day ; that he tra- vels from the east to the north, and that the north-west wind blows from the interior opposite to the course of the sun. 2 Pitt-Town, New South Wales. 239 III. Register of' the Thermometer ^ at Vitt-Town, New South Wales, 9th January 1827, being a fair average midsummer day, with close stifling heat, and without a sultry wind. 5>^ A- M. GG° ■' lO'^lO'A. M. 74|o Shade more, breeze 5 30 GG stronger. C 07 Clear, cool, calm, hori- 10 15 75 Strong cool gust from NW.; crickets silent zon hazy, indicating heat. as if by magic. 15 G7 And a shade more. 10 20 751 Calm. C 25 67 And a sliade less ; light 10 25 75| air of wind. 10 27 76 Slight breeze. C 30 CCf Air of wind, sensibly 10 30 75| Strong whistling gust. cooler than before. 10 33 754 6 35 661 Ditto. 10 35 75| Breeze over. 6 40 66f Ditto ceased. 10 37 76' C 45 67 And a shade more ; 10 40 764 Cool breeze. calm. 10 43 76| 6 55 m A shade more, rise 1|°. 10 47 76| And a shade more ; haze 7 67f indicating heat. 7 5 67| Air somewhat cooler. 10 50 77 And a shade less ; crick- 7 10 68 ets again lively. 7 15 681 10 55 77i 7 20 68| 11 771 Rise 3f . 7 25 681 11 5 78 7 30 68J 11 7 784 Warm, but strong, pas- 7 40 68 sing gust. 7 55 67^ Cool air, but no wind. 11 10 78| Ditto. 7 57 671 Cool wind, breeze fresh. 11 15 78| 8 3 68 Shade more, breeze 11 25 79 'Cool. calm. fresh ; rise |°. 11 30 in Slight pulF of wind. 8 5 684 Ditto. 11 37 80 8 7 68| 11 40 80i 8 10 69 Breeze slackened. 11 43 801 Cool ; calm ; white haze. 8 15 69 Shade more, cool, calm. 11 45 80| And a shade more. 8 20 69 Cool fresh air from 11 47 81 N.W. 11 50 8I4 8 30 691 Ditto, wind fresher. 11 53 81| 8 35 69f 11 55 82 8 45 70 A shade more, breeze fresh, air cool. 11 57 82 A little less ; wind brisk, but gloomy ; not pain- 8 53 701 ful. 8 57 71 Shade less ; rise 3°. 12 p.m. 81f Rise 410 per hour. 9 71 Coal air of wind. 12 7 82 9 5 71| Ditto. 12 15 824 9 10 7H 12 20 834 A warm puff of hot air. 9 20 72 12 24 83 A cooler breath of wind. 9 40 73 Crickets and grasshop- 12 27 834 Heat of sun powerful. pers lively, and nu- 12 55 84 Cool, equable, agreeable merous. breath of air. 9 45 734 Refreshing strong breeze. 1 J 5 10) 15 20/ 84 A shade more. Rise2|°. 9 55 74 A shade less; milder, 84 no wind ; rise 3°. 1 30 844 10 10 3 10 5 74 m 74| 1 35 84| Warm air, causing spon- Slight breeze, mild. 1 40 85 taneous perspiration. A shade more. 240 Rev. J. Macgarvie'*s Thermometrical Observations at l»'45'p.M. 85i' 5h O'P.M 79|°| Horizon hazy; zenith 1 1 55 85i A shade less. Rise \\^. clearpale blue; fall 3A'». 2 85t^ Hazy. 5 10 794 Strong breeze. 2 5 10& 2 15, all 85 5 20 79 5 25 781 2 30 85i 5 30 784 2 35 85| 5 40 784 2 40 85 5 45 & 50 78| 2 50 86 6 78| Sun in a haze, reflected 3 86| Calm,warm air ; rise 1 4"- light pale-red and glis- 3 IQ 86 tening ; sun's border 3 15 854 Sun slightly clouded, yellow, calm ; fall 1°. but air rather hot. G 5 784 3 18 85 A slight cool air. 6 10 78i 3 23 844 Breeze. 6 20 771 3 26 84 Breeze a little stronger. 6 25 774 Sun's body of a brim- 3 28 84 ! A shade less ; strong gust ; leaves of corn- husks flying about. stone yellow; reflected light dark-red, glisten- ing - horizon hazy. 3 30 83f 6 30 77i 3 33 83ii 6 35 77 Sun now dark blood-red. 3 35 821 : no reflection of rays, 3 45 824! haze. 3 50 824' 6 45 76f Sun sinking, as the poet 3 55 83 Wind ceased ; sky hazy, says, ' in a sea of blood-' threatening a gale. 6 55 764 Sun down. 4 824 Fall 40. 7 764 Fall 24°. 4 5 821 Wind moderate. 7 10 m Moon bright, night cool. 4 10 82 Brisker do. 7 15 m 4 20 81| 7 30 76 4 25 814 9 71 Here it descended about 4 30 81 Strong cool wind. ' 1 J° every 30 minutes, 4 35 81 when the night became 4 40 80| cold and chill, after so 4 45 804 hot a day. 4 50 80 And a shade moi^e. 9 38 68 4 55 80 A shade less. IV. Register of the Thermometer on the \Oth January 1827, at Pitt- Town, New South Wales, being a fair average day, with dense fog in the morning, clear sky at noon, and dark haze in the afternoon, with a hot suffocating wind. 5 to 6** A.M. 634° Very dense white fog 6 30 A. M. 67 over the Hawkesbury, 6 33 m heavy dew. 6 35 674 6 64 Clear in zenith ; no 6 37 671 grasshoppers nor crick- 6 40 68 ets. 6 45 68| Air cool and pleasant ; 6 5 644 range in this hour 4°- 6 10 644 Fog dispersing; no 7 69 wind ; sun clear. 7 5 69 Cool air. 6 12 64| 7 15 69| 6 15 65 Fog almost dispersed. 7 18 70 6 20 654 7 20 70 And a shade more. 6 22 66 7 22 70i Not a cricket heard. 6 25 66| 7 30 70| at Pitt-Town, New South Wales. 241 Register, S^c. \Oih January — Continued. 7 50 A. M. 72 Range in this hour 3^°, about half a degree every five minutes. 11 59 a.m. QQ Warm air, sudden rise. Range in the hour \° ; greatest fall 3^°; rise 8 72^ Fair ; no wind. 34° in 25 min.. 8 5 73 12 p. M. 864 Warm glow. 8 15 73^ 12 2 86| Do. breeze strong. 8 20 74 Crickets heard, long 12 3 87 Do. violent gust, warm. unnatural note. 12 5 874 Crickets very lively, na- 8 30 75 Clear pure sky, threat- tural notes. ening a hot gale. 12 7 871 Warm air. 8 40 754 llange of this hour 44°, 12 9 874 or \ deg. every 4 min. 12 12 88 Calm. 9 7C| 12 15 87 Cool gust. 9 5 76| Light air of wind. 12 18 88 Warm strong wind. 9 10 77 A slight warm puff". 12 20 88 A shade more; violent 9 20 m gust of warm wind. 9 30 78 12 25 871 Cooler. 9 40 78i And a shade more. 12 27 874 Do. 9 45 784 A cool breeze in shade, 12 30 87i Do. • but in the sun hot. 12 33 87i Do. 9 50 794 Range of this hour 3**. 12 35 87 9 55 79| Calm, sun clear ; crick- " ets very lively, natural 12 40 86| Strong cool gale, not a cloud in the skv. 10 79| note. 12 45 861 Do. 10 5 804 No breeze. 12 47 86| 10 15 80| 12 50 86 Strong wind, not scorch- 10 20 81| Strong gale of warm ing. wind commenced. 12 55 85| 10 22 82 Gusts whistling gust. 12 57 854 Strong, cool. 10 25 824 Gusts abated. 1 86 Strong but warm glow. 10 30 824 Calm. Range 4° down ; rise 10 35 82| Gale must have cooled the air 1 1 min. to \ deg. in 20 min. 24° ; fall in 40 min. 2°. 10 45 83 Range of this hour ^\°. 1 2 87 11 85 1 4 87i Warm suffocating wind, 11 5 854 rise sudden. 11 10 84 Strong whizzing breeze 1 5 874 cool. 1 7 871 11 12 83 Strong loud gust, cool. 1 9 88 Crickets again in natural 11 13 82| Very violent gust of wind, hot, from NW. tune ; had stopped in the cool gale. 11 15 83 Do. do. 1 11 874 Strong gust. 11 17 83i Do. do. 1 40 884 Strong warm wind. 11 20 824 Cool, but strong breeze. 1 45 874 11 25 824 Stiff cool gale. 1 50 87 11 27 82|- Strong, cool, hissing gale. 1 57 874 Range in this hour 2° of rise in 9 min., and fell 11 33 824 Do. do. crickets with long croaking note. Violent gust from N W. Rose suddenly. 14° in 10 min. from P 40™ to V" 60™. 11 35 824 2 87 11 40 834 2 5 87 Cooling breeze. 11 43 83| Gale abated. 2 10 864 Very strong do. 11 45 834 Gusts renewed. 2 15 87 11 48 85 A shade less ; warm 2 20 884 Warm air. breeze ; sudden rise. 2 25 894 11 53 84i Breeze rather on the 2 26 89| increase. 2 28 90 11 57 84 2 33 90 A shade less. JULY — SEPTEMBER 1827. 24)2 Rev. J. Macgarvie^s Thermonietricdl Observations Register, Sfc. 10th January — Continued. 2 35 89i 5 40 p. M. 84| Glass more steady and 2 40&45 89i regular. 2 55 89 5 50 84 Range down = 3°. 3 89^ Range of rise from 2*^ 6 84 10"», 3". C 10 834 Sun with a curious yel- 3 7 90i Warm strong gale. low haze around him. 3 15 894 6 25 83 A shade less; light of 3 25 88 Cool, shrill gale, hot. sun yellowish ; reflect- 3 30 884 ed light, on a Avhite 3 35 88 i ground, a beautiful pale 3 40 88^ red. 3 50 89 Range from ^^ 7"* to 3^ 6 27 82| 25'«, 3VfaUof24. C 30 824 Strong wind, haze ; sun 4 89 almost obscured, white 4 5 894 spot in centre. 4 15 874 6 35 82 Sun like a ball of red 4 25 884 hot metal. 4 30 89 Gale. 6 50 82 Sun down, dark, hazy 4 35 884 Glass very feverish. horizon, and indicating 4 45 874 a hot stiffling night. 4 50 87 7 82 Range 24° down. 5 87 Range, descent of 2° in 7 15 814 Moon clear. 30 min. 7 20 81 5 5 86 Moderate, sun clear. 9 30 754 Sky overcast, wind high, 5 20 85 threatening a gale and 5 30 85 And a shade less ; heat fully more oppressive than at 90, or less able to bear it. rain ; descent this hour 7°, indicating a descent of 1° in every 20 min. V. Register of the Thermmneter on Wth January 1827, at Pitt'Town, New South Wales. The Thermometer during the following day, January 11, continued uniformly advancing and descending. Thus, Light clouds, clear; no crickets. Crickets lively. Hot, close, warm wind. In sun 100°. Sun overcast, threatetis a squall. Getting cool. Overcast ; threatens a thunder storm. Thus, in 6'' 40™ it rose 144°, and sunk 15° in the space of 5** 20". This, how- ever, does not shew the minute variation. 6^ A.M. 734^ 8 744 9 75 9 6™ 77 10 20 83 12 30 87 12 40 87 1 30 88 1 40 88 3 30 87 4 20 82 4 50 79 6 35 73 at PUt-To7^n, New South Wales. VI. Register of the Thermometer, ofi I2th January I82^y at Pitt'Town, New South Wales; being a fair average midsummer day, covered ivith dense immoveable clouds, the sun not appearing all the day. This day was as remarkable for steady, undeviating, low temperature, as the preceding days were for unsteady fluctuating variations. 6*» A. M. 71° Cloudy, cool. No crickets; seldom heard till the thermome- ter is above 74" ; yesterday crickets and grasshoppers flying about in all directions, to-dav not one to be seen. 7 11 2 4 5 6 71 Range from 6 to 2, or eight hours, = 3"* ; from 2 to 6 p. m. or four hours, — 3°. A. M. 71° m 71 72 P. M. 74 714 71 71 VII. Register of the Thermometer at Pitt- Town, New South Wales, on the 18//i of January 1827, being a fair average day ; cool in the inornhig, glowing hot at mid-day, with a strong gale, and followed by a severe thunder gust, and cool calm evening. * Mild, pleasant; cloudy ; rose gradually to 12 p. m. Cool, wind howling, clouds dark. Greatly overcast, threatens thunder. First peal heard distant. Rain in large drops. Rain very heavy, wind strong. Severe squall, thunder loud and high. Squall at its worst, heavy rain. Wind abating. Squall nearly over. Calm, with clouds. Steady till this ; fresh squall commencing. Very severe thunder storm, squall from NE. Gale abating ; continued steady till 7 p- m. 6 A. M. 76° 12 p. M. 904 12 27 90 12 33 894 12 40 89 12 45 884 12 55 87 1 5 854 1 10 844 1 15 83 1 20 79 1 25 77 2 10 824 2 40 82 3 30 77 3 33 76 3 40 764 7 30 74 8 40 73 9 73 VIII. Register of the Thermometer at Pitt- Town, 2lst January 1827, being a fair average day, with light hazy clouds over the whole sky, painful scorching heat, and a strong hot gale from the sun, and going round from E. to W. by N. during the day. 6 A. 7 30 8 9 10 73° 74 744 824 Cloudy; clouds about 11 break away, and heat gradually in- creased till 2 o*clock. 2 A. M. 974 2 30 98 3 40 984 3 20 m 3 35 96 4 35 95 5 30 92i 6 91 6 30 91 9 86 ■ 244 Rev. J. Macgarvie''s Thermometrical Observations Table — continued. Hands and face affected by strong heat. Air in breeze 104% in sun 114|°, in warm shade 104°. Beautiful clear sky to the west. Sun with a yellow tinge on the border. Continued to descend; lowest during the night about 7&°- Highest rise 264° ni the shade; in sun, 4l|°. Sudden changes like these must try the strength of the strong- est constitution. On the 18th of January, the change of tem- perature, in falling from greatest heat, in one hour, was 4? times greater than it had been on the 12th of January in four hours ; and on the 21 st January, the rise from 6 to 2, in the shade, was more than eight times that on the 12th January ; and. in the sun^ was fourteen times greater I hat it had been in the same space upon the same day. From these observations, imperfect as they are, (and to do justice to meteorology would require more labour and unremit- ting attention than one man can bestow), we draw the follow- ing conclusions . Hour of Mean Heat Hour corre- No. Day. No. of Observa- Maxi- mum Maxi- mxmi by Average of Obser- sponding to Mean Heat Character of Day. tions. Heat. Heat. vations. nearly. I. Jan. 5. 26 83| 2 79M 10 30 f Warm, strong ( cool wind. II. 6. 54 824 3 20 75/5 9 45 Strong cool gale. Hot ; no wind. III. 9. 137 864 3 73tVt 9 45 (Fog, suffocating ( wind. IV. 10. 147 904 3 7 SOtV? 10 5 V. 11. 13 88 1 30 801 § 9 40 Hot, close wind. VI. 12. 7 74 2 73 12 Cool, calm, cloudy. VII. 18. 20 904 12 8H 10 Hot thunder gust. VIII. 21. 14 984 2 40 88 f 12 Scorching heat. Sum, 418 693f 30 37 629 83 45 Mean of Av. 52 86 5 3 49 78| 10 28 It is somewhat singular that the hour of maximum heat in this Table, and in the average, should occur about 3, or be- tween 3 and 4 o'clock r. m., and that the average or mean tem- perature should occur about 10, the precise hours that seem to correspond with observations made in the northern hemi- at Pitt-Town^ New South Wales, 245 sphere ; and we have not any doubt that, if a continued series of experiments were made at very short intervals in this colony, the hours in averages would be found exactly to correspond. Mr John Coldstream made a series of observations, for twenty- four hours, each month in the year, for one year, the results of which were published in the Memoirs of the Wernerian Society for 1823. According to the average result of these well conducted experiments, it was ascertained that the daily range of the ther- mometer was on an average about 9°.93, its maximum being 23% which happened in August, its minimum 5° occurring in Fe- bruary. The average daily range would be much greater in this colony, when we know it sometimes ascends from 65° and 70° to 114°^ and, according to your own accurate observations at Paramatta, even to 118|° in warm situations in the open air. It would, therefore, be a matter of singular utility, to Jiave many sets of observations long continued, and at very small in- tervals, both at Paramatta and on the Hawkesbury, and perhaps on the Blue Mountains, and at Bathurst or Liverpool Plains, in this colony, that the general rule might be found by which the temperature of the earth is regulated, and changes of tempera- ture produced. This has been recommended by Dr Dewey in America, and by Mr Coldstream in Britain, who very justly observe, " that this is a task that may be accomplished by the co-operation of many, but can never be done by any single in- dividual.'^ If this be the case in America and in Britain, where all " appUances and means to boot'' may be readily procured. It must be greatly increased in this colony, where so little en- couragement, and so few facilities, are given, even by men who profess to love and follow science for the sake of truth, that no man will think of encountering the difficulties. It will be long before an equally accurate set of experiments with your own shall be made we fear in this colony. Should an opportunity present itself to me, I shall not fail to embrace it. Yours, &c. ( 246 ) On the Materials which the Romans employed in their Build- ings. By Mr C. T. Ramage, A. M. of Naples. Commu- nicated by the Author. A HE materials which were used in the erection of the vari- ous edifices, which add so much interest to the ancient city of Rome, may be ranged under two great classes. The first con- sists of the common materials for building, which were found in the immediate neighbourhood of the city, such as limestone, pozzolana, clay, and silex ; the second of those which were brought from a distance, white and coloured marbles, granites, and porphyries. Their mortar was made, as it is at present, either from com- mon limestone, or from a stone which Vitruvius calls silex, and which may perhaps correspond with our compact calcareous limestone. That which was obtained from the last, was em- ployed in the construction of walls, while the other was used as plaster. This mortar was mixed either with Arena fossica^ sand dug from pits, or Arena Jluviatica and marina^ from rivers and the sea. Of the first they had several sorts, black, white, and red, together with that to which we give the general name of pozzolana^ The vicinity of Rome abounds with this last sort, and the inhabitants still use it for the same purpose. The place from which the sand was dug, was called Arenarium, and these excavations have no doubt given rise to the catacombs in Rome. The colour of this pozzolana is by no means uniform, for it is sometimes found red, sometimes purple, and sometimes the colour of tobacco. Its name is derived from Pulvis puteo- lanus, because it was originally found in great quantities in the neighbourhood of Pozzuoli, near Naples. It was particularly used for buildings under water, because it resisted the influence of that element, and acquired such a consistency as to form a solid mass of stone and brick. A proof of this is found in the ruins of the harbour of Antium, and of the mole of Pozzuoli, which is called the bridge of Calligula^ though it must date its origin long before the reign of that emperor. It is curious to observe, that on the shore of Baiae, where Horace accuses the Romans of attempting to deprive Neptune of part of his terri- tory, the foundations of the houses in the sea still remain, while On the Building Materials used by the Romans, S4T those on the shore have entirely disappeared, and left scarce a vestige behind them. On examining these foundations, it is found that they consist of this sort of cement, bricks, and some- times pieces of tuffa. The sand from the sea and river was never employed when the other sort could be found, and the same observation maybe made regarding gravel (glarea). The cement, according to Vitruvius, was composed of three parts of pit sand and one of limestone, or rather of two parts of river or sea sand, and one of lime. They generally added a third part of pounded shell to correct the defects of the sand, and to ren- der the cement more firm and tenacious. Clay was employed in the formation of their bricks, and must have been in great request in Rome, as their buildings are chief- ly composed of this material. We are told by Vitruvius that, in his time, the bricks were dried by the rays of the sun, and he enters into a minute description of the method which they employed ; in the ruins, however, existing at Rome, we observe only bricks baked by artificial fire. On an attentive examina- tion of those found in Rome and Pompeii, we discover that the clay which they used was generally of two sorts, yellow and red, and that they mixed with it tufFa dust to render it more compact. Their size differs according to the use which was made of them, and the time they were formed. The bricks employed in courts are generally triangular ; those which we call tiles, and which served to bind together the roof to the entire mass of the wall, are a foot and a half square ; and those which were used for arches are quadrilateral, and are a foot and a half long and half a foot broad. Allthe ancient bricks are much finer in the grain, and are easily distinguished from those of the present day. The stones which were employed in the buildings of ancient Rome, are the following : tuffa, which Vitruvius calls lapides rubri; peperino, or lapis albanus; travertino, or lapis tiburti- nus; silex, and pumice-stone. The first four are found in the foundations and outer facings of the buildings, as well as in the internal construction of the walls and vaults ; the silex was only employed in the pavement of the streets, and the interior masses of the wall; the pumice-stone was particularly used in vaults from its lightness. Tuffa is found in every part of the country round Rome ; and the ancient quarries, alluded to by Strabo, 248 On the Building Materials used hy the Roimans. may be seen near the Anio, at Cerveretta, five miles beyond the Porta Maggiore, to the left of the Via Collatina. It is a volcanic production, of a colour more or less red, and of no great solidity, as it is easily decomposed by exposure to the atmosphere. The foundations of the buildings on the Palatine Hill are of this stone, and the Temple of Fortuna Virilis, and the aqueduct of Claudius, are also built of it. In this case, they either rough- cast the outer part of the wall, or cut it in sufficiently large pieces to resist the action of the air; the first method is observed in the above mentioned temple, and the other is found in the aqueduct of Claudius. Tuffa was employed also in Rome and its neighbourhood, for that sort of building, which, from its form, was called reticulated. This commenced on the decline of the Republic, and ceased about the time of Caracalla. The vicinity of Naples abounds also with this stone, and indeed the city is almost entirely built of it. The grotto of Posillipo passes through a mountain of this sort, and the perforations in the neighbourhood of Cumae, Raise, &c. which are supposed to have been the abodes of the Cummelii mentioned by Homer, are dug in the same volcanic matter. Lapis albanus, Peperino, also a volcanic production, derived its name from Mount Albanus, and its quarries are seen at pre- sent in the neighbourhood of Marino ; its greenish greyish colour^ and the resemblance it bears to pounded pepper, has given rise to the vulgar name of Peperino. This stone, as well as that called Lapis Gabinus, resists the action of fire ; and, on that account, Nero, according to Tacitus, issued a decree, after the burning of Rome, that all the houses should be built of one or other of these stones. The peperino is more solid than tuffa, and is less influenced by atmospheric changes, though it also suf- fers. The walls of Servius at Rome were built of it, as may be still observed under the temple of Victory, on the declivity of the Quirinal, where there are still some remains. It has also been employed in the erection of the enclosure of the forum of Nerva, the temple of Antoninus, and Faustina, &c. The Lapis Gahinus very much resembles peperino, and is found at Gabii, about twelve miles from Rome. Its colour is the same ; but it is much harder and more porous ; the ancients employed it more particularly for millstones. On the Building Materials used hy the Romans. ^49 Travertino, a name corrupted from Lapis Tiburtinus, was brought from the neighbourhood of Tibur^ Tivoli ; and even now you see the ancient excavations between the Aquce AlhulcB and Pons Lucanus, to the right of the road. It is a calcareous concretion, formed by sulphureous waters, and those of the Anio ; it is extremely porous, resists the action of the atmo- phere, and hardens in proportion as it is exposed ; fire, however, decomposes and calcines it. The amphitheatre of Flavins, the sepulchre of Melella, and many other monuments on the Appian Way, are of this stone. Its colour is originally white, but, from long exposure, it acquires a yellowish hue, which adds much to the beauty of the buildings. The Romans cut it in large qua- drilateral masses, and employed it without cement for their edi- fices. The temples and walls of Paestum are of the same mate- rial, and the quarries where the cyclopic masses were excavated, are seen without the walls of the city. Some of the stones are twenty-four feet in length. There is a bridge at Benavento, which is observed to be of the same structure and same mate- rial. Silex is a different stone from the one which is known to mineralogists under that name ; it is a basaltic lava, of an iron colour, which, from its peculiar hardness, was employed in walls and the pavement of streets. The quarries are found on the Appian Way, beyond the sepulchre of Cecilia Metella, and in many other places in the vicinity of Rome. Pumice-stone *, from its extreme lightness, was reserved for the erection of vaults ; and you find it employed in those of the Coloseum, and the magnificent cupola of the Pantheon. It was brought from the neighbourhood of Vesuvius. These are all the common materials which the Romans em- ployed ; and before we proceed to notice those ornamental stones, which added so much beauty to their edifices, we shall attempt to mark the different epochs in Roman history, when these ma- terials were used. The most ancient Roman buildings are constructed of the lapis albanus, because Alba was the first important conquest which the Romans made ; and it is natural to suppose that they would prefer the stone which could be most easily procured. * The pumice mentioned above is, we presume, vesicular lava, not the pu- mice of geologists.— Edit. S50 On the Bmldin^ Materials used by the Romans, This continued to be used, not only during the regal govern- ment, but almost to the fall of the republic. The Career Mamer- tinum constructed by Ancus Marcius ; Cloaca Maxima, the work of the Tarquins ; parts of the Wall of Servius, under the Quirinal ; the sepulchre of the Scipios, and many other ancient monuments, are built of this stone. When Tibur was subdued, A. M., 417, they began to introduce Travertino, which was ever afterwards promiscuously used with the lapis albanus. As it is harder and more compact than peperino, it was particularly used for ornaments, arches, and architraves. Thus, the Doric capi- tals and architrave of the tabularium, the insulated columns of the temple of Fortuna Virilis, and the arch of Dolabella on the Mons Coelius, are composed of this stone. As far as we can . perceive from the remains of antiquity, square masses of stone were used during the kings and the republic. But on its de- cline, they introduced that sort of construction which Vitruvius calls Opus Incertum, and which must not be confounded with diat formed of large polygons, which we see at Cora, Prasneste, and other ancient cities of Latium. Vitruvius, indeed, tells us, and we can perceive it from the ruins, that this opus incertum consisted of small stones mixed with mortar. There is an ex- ample of it in Rome in the temple of Romulus, under the Pala- tine ; at Tivoli, in the temple of Vesta ; at Praeneste, i^ the tem- ple of Fortune, and in many other ruins scattered through the country. On the contrary, the vi^alls of the above mentioned places are built of massive polygons of three, four, and five feet in length, and without mortar. The opus incertum is only an outward facing of the wall, and is supported behind by a mass of every sort of material. ' The opus incertum, was soon succeeded by the opus reticular turn, which is mentioned, by Vitruvius, as the fashionable archi- tecture ^f his age, andwhich continued to be, more or less, used down to the reign of Caracalla. This reticulated construction derived its name from its resemblance to net-work, and was formed of stones found in the neighbourhood, which were cut into the form of coves. At Rome the stone is tuffa ; at Prae- neste, calcareous limestone ; at Tivoli, travertino ; and at Tus- culum, a kind of peperino, which the Itahans call Piatra Tus- culana. As this particular sort of construction could not be On the Building Materials used hy the Romans. 251 used in the angles of houses, they seem generally to have intro- duced bricks, and sometimes stones of a rectangular shape. There are several beautiful specimens of this reticulated work at Rome ; the gardens of Sallust under the Quirinal, and the palace of Maecenas, may be mentioned as worthy of inspection. In both these, you see this net-work promiscuously used with bricks, regarding which we shall now make a few observations. The Opus lateritium or brick- work, began to come into ge- neral use in the time of Augustus, and maintained its ground to the fall of the empire ; it was nearly equal in strength to the massive stone-work which was originally employed. There were many changes, during this long period, in regard to the form of the bricks, and the quantity of cement. In the reign of Augustus, they were generally made of a red earth, of a tri- angular form, and about an inch in thickness, as may be seen at the gardens of Sallust, at the palace of Maecenas, under the Es- quiline, and at the palace of Augustus on the Palatine. Under Tiberius, the earth was of a deeper red or yellowish, as is proved by the praetorian camp without the Porta Pia ; and in the time of Nero, they mixed the yellow and red bricks in their build- ings, as the aqueduct near the Porta Maggiore shews. They are much smaller than those of Augustus and Tiberius, and very little cement seems to have been placed between them. There are some other remains, in different parts of Rome, that seem to be of the same age and construction. Of the brick constructions of the time of Vespasian and his sons, we have some magnificent specimens in the amphitheatre of Flavins, the baths of Titus on the Esquiline, and the villa of Domitian. The two former ap- proach nearer the construction of Augustus, and the latter re- sembles the brick-work of the palace of Maecenas. The edifi- ces built in the reigns of Trajan, Adrian, and the Antonines, exhibit the same construction, and though the bath%of Cara- calla'are evidently deficient in good taste and beauty of design, yet the brick-work is nearly equal to that of the best times. After this there was a rapid decline in every thing connected with ar- chitecture, and even the brick-work did not maintain its original solidity. They no longer attempted to make them equal in size, and they introduced large portions of cement, which tend- ed much to weaken the strength of the walls. From Caracalla 252 On the Building Materials used hy the Romans. to Diocletian there are few remains, and even of these we are unable to fix the exact period when they were erected. It is curious to observe, that they now began to be economi- cal in the use of bricks, and that they introduced a mixture of tuffa, as is evident from the restoration of the tomb of the Sci- pios, the circus of Caracalla, and the ruins adjacent to the cir- cus. The numerous churches and basilicos, which were erected by the Christians in the fourth, fifth, and sixth centuries, such as St Croce a Gerusalemme, St Geovanni e Paolo, St Paolo, St Pietro in Vincoli, &c. and the walls which surround Rome on the left bank of the Tiber, and which are of the age of Hono- rius, exhibit the same poverty of materials ; they have bricks of all sizes, with a great quantity of cement, which is of inferior quality to that used in earlier times. On the fall of the Roman empire, they even neglected the selection of proper materials to form their bricks, and even employed those which they took from more ancient buildings. At last they invented a method of cutting the softer stones, tuffa and peperinos, into small rect- angular masses, and discarded entirely the use of bricks. The Italians call this Opera Saracinesca, because it was introduced when the Saracens occupied Italy. The walls of the Vatican, built by Leo IV. in the ninth century, are the first specimens which we have of it in Rome. This sort of construction con- tinued to be used during the barbarous ages till the fourteenth century ; the castle of Capo de Bove, near the sepulchre of Me- tella, built by Pope Boniface VIII., is a beautiful specimen of it. They sometimes cut marble in this rectangular shape, as may be seen in Sorre de'' Conti, a work of Innocent III. of the thirteenth century. To conclude this part of our subject, we may remark, that the Romans during the kings, and the time of the republic, em- ployed in the public edifices square masses of stone ; on the de- cline of the republic, they introduced opus incertum ; under Au- gustus opus reticulatum and lateritium were promiscuously used; the opus reticulatum ceased under the Antonines, but the brick-work continued to the seventh century, and was suc- ceeded by the opera Saracinesca. We must reserve the observations we have to make on an- cient marbles, granites, porphyries, and alabaster, till another op- portunity. ( S5S ) On the Covering of Birds, considered chiefly with reference to the description and distinction of Species, Genera, and Or- ders. By Mr W. M acgillivray, Assistant to the Regius Keeper of the Edinburgh College Museum, and Correspond- ing Member of the Wernerian Natural History Society. Communicated by the Author. XJirds, like quadrupeds, are invested with a covering, w^ich is connected with the skin, and lies immediately upon it. This covering is chemically of the same nature with the hair of mam- mifera, and the scales of reptiles and fishes, but it differs essen- tially in respect to its mechanical structure, being much more complex in its constituent parts than the envelope of these class- es of animals. To this general envelope the name of plumage is given. In ordinary language it is more frequently called the feathers. It is peculiar to birds. It may be presumed, that the plumage of birds serves to pro- tect them from the injurious agency of external powers, such as cold, heat, rain, hail, &c. and that it operates in retaining the caloric generated in the body, and in developing or fostering electricity. The varieties of structure, magnitude, and propor- tion, and the degrees of connection, which its parts present, to- gether with the diversified hues, and the varied capabilities of absorbing or reflecting light which it possesses, must, in a sys- tem where every thing is the result of design, originate from peculiar specific necessities, and be subservient to the welfare, or even the existence, of the individuals composing this beauti- ful, and, in many respects, highly interesting class of beings. Upon considerations like these it is not my design to enter. Their developement would constitute a task moro than sufficient to confound the pretensions of the wisest ; and I should more admire the mind that had discovered the causes, relations, con- nections, ends and objects of a feather, than that which had measured the magnitudes and distances of the planets^ traced their orbits, and calculated the velocities of their revolutions. The plumage also answers another very important end in the economy of birds, being the medium of their locomotion in the air, — a faculty which gives them so many advantages over qua- drupeds, and which is not possessed, in an equal degree, by any other class of animals. 254 Mr W. MacgilUvray o?i the Covering of Birds. The plumage, then, is the general covering of a bird, which usually invests all its parts, excepting the beak, eyes, tarsi, and toes. It consists of a great number of individual parts, which are (XenoxmnsiieA feathers. Besides these parts, however, so de- nominated, there are in most birds others, which, lying conceal- ed among the former, and not making their appearance at the surface, are apt to be overlooked by superficial observers. These are the down-feathers, and hairs, or piliform feathers, which will be described in course, but which, for the sake of simplification, may be for the present overlooked. These individual parts or feathers are disposed upon the skin in what is called quincuncial order ; that is, in lines intersecting each other at acute angles, and in such a manner as to lie over each other, like the tiles on the roof of a house ; a circumstance denoted in Zoology as well as in Botany, by the term imbrication, their general direc- tion being backwards, or from the head of the bird to the tail and extremities. The plumage, as has just been observed, does not cover the whole surface of a bird ; but, besides the parts mentioned, as being altogether bare, there are others, which, although covered over by the feathers, yet do not give origin to them, and are thus, in a particular sense, bare. These parts are : a line from the base of the upper mandible to the eye, called the lore or bri- dle ; a line from the ear to the shoulder, on either side of the neck ; a broader line from the fore-part of the sternum to the vent ; a space upon the sides under the wings ; and in female birds, and frequently in males also, during incubation, two cir- cular spaces, or one transversely oblong space, of greater or less size, upon the abdomen. Other parts also occur in particular species or genera, which will become the subject of distinct con- sideration in their own place. A feather may be defined an individual constituent of the plumage, having a distinct existence of its own, and by its asso- ciation with others contrirbuting to form the general envelope. Or, in another sense, it may be defined, a mass of indurated ge- latinous matter, inserted by one extremity into the skin, con- nected by apposition in the greater part of its form with others, and in a portion of one of its terminal surfaces touching the air, having a root or proximal part of a tubular form, continued in- Ml" W. Macgiilivray on the Covering of' Birds, 255 to an elongated and attenuated stem, laterally giving insertion to a series of connected filaments. A feather of the ordinary kind, or what may be assumed as a perfect feather, consists of the following parts. 1. The tube or barrel^ (in Latin tubus, in French tube or tuyau), a tubular part, by which it is fixed into the skin. It consists of a thinnish transparent tube, or hollow cylinder, ha- ving the colour and texture of a thin plate of clear horn, and being chemically of the same nature. This tube, which is more or less protracted, being in some feathers scarcely a fortieth part of their length, as in the hypochondrial feathers of Paradisea apoda, while in others it exceeds a third, as in the quill-coverts of the Flamingo, is abruptly narrowed at the lower, or with reference to the connection of the feather with the skin, the proximal end, where it is closed up by a dry membrane, forming part of an apparatus that has been subservient to the growth of the other parts of the feather, and which now, in a dry and shrivelled state, extends along the whole length of the tube, in its interior. This part, when taken out of the tube of the feather, presents the appearance of a very thin transparent membranous tube, di- vided internally by transverse dissepiments. At each of these dissepiments the tube separates on pulling it gently, and each portion so obtained presents the appearance of an inverted fun- nel, the prolonged extremity of which, being continued into that of the next above it, an internal tube is produced, which occu- pies the centre of the membrane. This membrane is, in ordi- nary language, termed the pith, from its resemblance, if not in nature, at least in position, to the pith of a plant. It might, with more propriety, be named the internal membrane of the tube, membrana tubi interior, membrane interieure de la tube. The tube is invested externally with a sort of close sheath, con- •sisting of several layers of condensed cellular membrane. With regard to the texture of the tube itself, it would seem to be com- posed internally, and, in its greatest thickness, of a uniform horny substance, which, in many species, however, shews longi- tudinal fibres, while the outer part, though not to a great depth from the surface, is composed of transverse or annular fibres. Hence the reason why, in making a pen, the slit is always clean- est when the outer layer has been scraped off. The longittidi- 256 Mr W. Macgillivray wi the Covering of Birds. nal fibres are distinctly seen in the quills of the domestic cock, and of the gallinaceae in general. The tube terminates above, that is, distally with respect to the body of the bird, in the next part. 2. The shaft or stem, (in Latin Eachis, in French La Tige). This is a continuation of the tube, but considerably altered in its forms. It is generally as follows. From being of equal dia- meter with the tube, it gradually diminishes, so as to terminate in a point. Considered in respect to its length, it is more or less curved, the outer, upper, or anterior part, or back, as it may be called, being convex, the inner, under, or posterior part, or face, concave. The back is more or less convex, but generally in a small degree, considered in its transverse section. The face is formed of two convex surfaces, separated by a groove which runs along its whole length, or of two inclined planes meeting at an obtuse angle. The two sides are more or less plane, and gra- dually approximating, as is equally the case with the back and face, from the base toward the tip, where all four meet, and so terminate in a point. Internally the shaft consists of a soft, compact, elastic substance, of a white colour, having much of the mechanical nature of cork, and which might be named the internal suberose substance of the shaft, materia rachis subei'osa interna, la matter e interne liegeuse ds la tige. It is separated longitudinally by a line proceeding from the groove of the face of the shaft, and this division can be traced along its whole ex- tent even to the back, on the external surface of which there is sometimes a corresponding sunk line ; but the two pieces of the corky matter are in close contact along this dividing line, and do not even separate distinctly by tearing them asunder. The ex- ternal part, or horny envelope or case of the shaft, is much thin- ner than the tube, the latter of which is prolonged farther along the back of the shaft, than along its face, although there is no line of distinction between them. Some further explanations, however, are necessary here, before the structure of the shaft can be rightly understood. Where the tube terminates on the face of the feather, and where the groove of the shaft com- mences, the line of union of the dorsal and lateral surface of the shaft meets its fellow of the other side, having gradually left the posterior margin of the shaft, crossed its side obliquely, and be- Mr W. Macgillivray on the Covering of Birds. 257 come anterior at this point ; so that, at the commencement of the shaft, what is naturally considered as the back of the shaft forms the whole circumference of it, and does not become the real or geometrical back, until it has reached a certain height. It is this back only which is the true continuation of the shaft. We may suppose the corky matter imposed upon its anterior surface, and covered over by a prolongation of it, forming the coating of the sides and face of the shaft. The posterior wall of the shaft is much thicker than the others, and longitudinally grooved inter- nally, or where it meets the pith ; the anterior walls are consider- ably thinner, and the lateral comparatively very thin. About the point of union of the two lines mentioned, on the face of the feather, the corky matter commences, and is in contact with the anterior coat of the shaft, but posteriorly it leaves a vacuity, which extends some way up the shaft. The internal membrane of the tube having reached this point, divides, a portion passing upwards into the posterior vacuity, another passing to the sur- face of the feather, by a small aperture at the commencement of the median groove of the shaft, over which lies a small laminar * prolongation of the tube. This arrangement is what is observed in quill-feathers in general ; but in most ordinary feathers there is no vacuity behind, and the internal membrane makes its exit undivided at the commencement of the groove. The shaft is distinguished from the tube by its being opake, which is caused by the internal corky substance, the external horny coat being of the same nature as the tube, only attenuated, and more so, as has been said, on the back, than on the face or sides of the shaft. 3. The webs (in Latin tela, in French les toiles), of which there are two, one on either side of the shaft. The web is a la- teral prolongation of the external layer of the coat of the shaft, into a series of filamentous substances, ordinarily placed in ap- position, and by their association in this manner forming a stifle ish elastic expansion. The filaments of which the web consists are named barbs. The barb, barba, barbe, is a very thin linear membrane, being an attenuated continuation of the outer pellicle of the shaft, and arising from it at the angle formed by the meeting of the dorsal JULY SEPTEMBER 18S7. R 268 Mr W. Macgillivray on the Covering of Birds. and lateral surfaces, along the edge of the latter. The direction of the barbs is obliquely outwards with respect to the shaft, that is, inclining more or less at an acute angle toward the tip of the shaft. Each barb is flattened or compressed vertically with reference to the shaft, considering it horizontal with its face downwards, concave on the side next the tip, convex on the other, so as to fit to its neighbour on either side. It terminates at its lower part, or that on the concave surface of the feather, in a sharp edge, generally diaphanous, which is reflected in the direction of the tip of the feather. The body or substance of the barb is pretty uniform in thickness, and it is only when viewed in connection with the barbules that it could with any propriety be said to be triangular. From the upper part or edge of each barb there proceed two sets, one on either side, of minute filaments, having a direction, with respect to the barb, similar to that of the barbs with re- spect to the shaft. These smaller filaments are named barbules, barbula, les barbules. It is by means of them that the barbs are firmly kept in apposition. The manner in which this is done, is not by the barbules of one barb interlocking with those of another, in the manner of dovetailing, or as the teeth of two combs might be made to alternate by mutual insertion, as I believe is generally supposed. The position and direction of the barbules do not admit of such union, seeing they meet each other at an angle, and therefore cannot interlock, which could only happen were they to meet vertically. The barbules of the side next the tube are shorter and more adpressed ; those of the side next the tip of the feather are longer and more patulous. The latter are curved downwards at the extremity, while the former are curved upwards ; and being placed in apposition they form two distinct and continuous edges, the incurvate or anterior series of one barb overlapping and hooking into the recurvate posterior series of the barb next to it. Although the connection of the barbs may not be easily seen in the ordinary feathers, yet it may in general be discovered in the quills and tail-feathers, without the aid. of a glass. When the barbs are pulled asunder in the plane of the web, their cohesion is found to be very considerable in most feathers. When the posterior barb is pulled downwards out of the plane of the web, the cohesion is found still greater ; Mr W. Macgillivray on the Covering of Birds. S59 but when the anterior barb is pulled downwards, or the posterior barb upwards, there is found to be no cohesion at all. The curved form of the barbules is distinctly seen by the naked eye, in the tail-feathers of Buceros galeatus. The barbules themselves frequently present an appearance similar to that of barbs, giving off laterally two series of fila- ments, which may be termed barbicels, barhiceUa. These fi- laments are much more sparse than those of the barbs, but their object appears to be the same, namely that of connecting the barbules, and retaining them in apposition. They are very dis- tinctly seen, with the aid of a small magnifying power, in the quills of Falco fulvus^ Diomedea exulans, and Buceros galea- tus. It may here be remarked, that, while what has been assumed, for the purpose of general description, as a perfect feather, is, what is termed in botany, supra-decompound, there is yet in feathers the following gradation in respect to division : 1,9^, A feather may have only a tube and a shaft, without any other part ; for example, the quill of the cassowary. 9.d, There are feathers which have a tube, a shaft, and barbs destitute of barbules; as in the crest-feathers of the golden pheasant. 3 J, Feathers consisting of tube, shaft, barbs, and bai'bules ; as in most birds. ^thy Feathers composed of tube, shaft, barbs, barbules and barbicels, as in the examples mentioned above. A barb also may have barbules in one part, and be simple toward its extremity, which is a case of very frequent occur- rence ; but these, and similar modifications, will be more proper- ly treated of, when we come to the varieties of form and struc- ture exhibited in the plumage. Feathers, then, in general, consist of three parts, — the tube, the shaft, and the webs; or they may be primarily divided into two parts, the tube and the vane, the latter of which consists of the shaft and webs. The webs consist of barbs furnished with barbules. With respect to the immediate consequences of their mecha- nical structure, it may be remarked of feathers in general, that, from being convex above, they resist flexion or fracture more r2 260 Mr W. Macgillivray on the Covering of Birds. from beneath upwards than in any other direction ; pulled to either side also, they feel stronger than when bent downward in the direction of their concavity. They are elastic, and this pro- perty, together with their curvature, tends to keep them close together, and enables the bird to present, when occasion requires, a more or less compact surface to the air. When the barbules are disjoined,]they readily unite again, on being placed in appo- sition. The weaker the feather is, provided it be complete in all its parts, the greater is the cohesion between its barbs. Com- pare, for example, the quills of Diomedea exulans with those of Falco rufus ; or quill-feathers in general with ordinary feathers. The webs ordinarily consist of united barbs, more or less stiff, although elastic, and. compact, in their whole length, excepting toward the junction of the shaft with the tube, where they are of a looser texture, often entirely disunited and floating. The lateral lines, from which the barbs arise, incline toward the me- dian line of the shaft at this place, as has already been explained, and meet at its commencement. At this point there is, in the feathers of a large portion of birds, a plumiform process, or small feather, which is of the following description : From the fore part of the tube, at the commencement of the shaft, and lying over the aperture by which the internal membrane of the tube escapes, rises a thin lamina, being a continuation of the substance of the tube. It gradually narrows, and is continued in the form of a very deli- cate thread, for a greater or less extent. From the sides of this shaft rise two series of barbs, and from the barbs two series of barbules, as in the ordinary feather itself, all the parts being extremely fine, and entirely disunited. The barbules are very much elongated and loose, resembling in these respects those of the lower part of the webs of feathers in general. This minia- ture feather may be called the accessory feather^ pluma acces- sorial la plume accessoire. In feathers possessed of this struc- ture, the internal membrane of the tube comes out entire be- tween the accessory feather and the feather properly so called, and is not continued internally along the back of the shaft. In respect to this accessory plumule, there is a curious and beautiful gradation among birds. In the diving aquatic birds, or such as swim more than fly, there is a short laminar or squa- Mr W. Macgillivray oil the Covering of Birds. 261 miform continuation of the fore part of the tube, which is fring- ed with small barbs ; as in the genus Carbo. In the duck tribe, some species are similar in this respect to the last division, for ex- ample, Anascygnus, leucopsis, albifrons; in others, the accessory plumule begins to exist in a distinct form, but very small, as in Anas tadorna. In the volitant aquatic birdsj as Sula, Larus, Sterna, the plumule becomes distinct, but is still small. In the lobe-footed water birds it also exists in this incipient state, as in Fulica atra, Podiceps cristatus. In the grallatores it attains the length of at least one-third of the feather. It exists in the ge- nus Psittacus, developed in a considerable degree. In the genus Corvus, and the omnivorous birds of Temminck in general, it is commonly about half the length of the feather, but very narrow, and with few barbs. In the genus Turdus, and others allied to it, it is still slender, but nearly two-thirds of the feather in length. In the genus Otis, it is more developed. In the gallinaceous birds it is very remarkable, existing of very considerable size in the genera Phasianus, Gallus, Lophophorus, Polyplectron, Te- trao, Perdix, &c. In these birds it is broad, furnished with numerous tufty barbs, and reaching to about a third of the length of the feather from the tip. In the galhnaceous birds in general, the posterior ventral feathers are downy, and in them the accessory feather is very little shorter or narrower. It is re- markable that the genera Pavo (P. cristatus and P. japonicus), and Crax, have no accessory feathers. This is equally the case with the Columbae. It receives its greatest development in the genera Casuarius and Dromiceius, where it is of equal, or nearly equal, size with the feather itself, and from being downy, has become perfectly similar in structure to it. Whether it exist equally developed in the ostrich I do not know, not having had an opportunity of examining that bird, but it probably does. Yet in the Rhea Americana, a bird closely allied to the emeu, the feathers are all perfectly simple, without even so much as a scale in the place of the accessory feather. I am aware that the double feather has been noticed in the emeu, the cassowary, and the ptarmigans ; but in the other birds which I have mentioned, its existence does not seem to have been known I observe that some writers having seen the double feather in the ptarmigan in winter, have, in a manner that to me seems very strange, taken it for granted that it does not exist in that bird in summer, and 262 Mr W. Macgillivray on the Covering of Birds. assumed that the accessory plumule is a provision of nature for defending from the cold a bird so peculiarly exposed to it as they imagine the ptarmigan to be. How these theorists may dispose of the reasonings which they have founded upon such data, when they examine the summer plumage of the ptarmigan, and find the accessory feather equally developed in it, and comparing the red grous with the ptarmigan, discover that it, too, is amply pro- vided vdth a downy envelope of the same nature, I know not. Moreover, if the bushy and downy accessory feather be a pro- vision of nature for the defence of the birds of cold regions, why should the argus, the Macartney cock, the jungle fowl, the Java partridge, which inhabit the warmest regions of the globe, be furnished with them, and that, too, in so high a degree ? The subject of the accessory plumule might, as will be perceived, be treated much more fully ; but my object not being to make it occupy a more prominent place than other considerations, I must relinquish it for the present, with the concluding remark, that, in birds possessed of that sort of feather, the quills and large tail-feathers, as well as the first row of superior and inferior quill coverts, are in most cases perfectly simple, although there are some birds, especially among the gallinaceae, and, in particu, lar, the Lagopede grouse, which, in those feathers, have a very distinct rudimentary accessory feather, existing in the form of a short tapering lamina, fringed along its free edges with small simple bards. Explanation of Plate III. Fig. 1. Anterior dorsal feather of the cassowary, 2. Anterior dorsal feather of the emeu, These two figures shew the accessory feather in its high* est developement, 3. Inferior lateral cervical feather of Ardea cinerea, 4. Dorsal feather of Tetrao saliceti. 5. Dorsal feather of Polyplectron chinquis. 6. Pectoral feather of Falco buteo. 7. Part of a primary quill of the flamingo, shewing the union of the webs, 8. Part of a primary quill of Tetrao saliceti, shewing the acces- sory feather existing in the state of a small pointed lami- na, fringed with simple barbs. PLATE HI. ^dm^n^u'J'hilJmr j> 262. rv.M?G d^n FuMish€d byAJiLuk /-M,,,. /.S2/ A'.MfrAe// scii/p Mr W. Macgillivray on the Covering" of Birds. Fig. 9. Part of! a pectoral feather of Diomedea exulans, shewing an accessory feather consisting of a small pointed lamina, margined with a few downy barbs. 10. Sections of three barbs of a quill of Diomedea exulans, a little magnified, shewing the mode in which the barbs are connected by the barbules. 11 . A barb of a primary quill of Tetrao lagopus, viewed laterally. 12. Part of a barb of a primary quill of Falco fulvus magnified, shewing the barbule, connected by barbicels. 13. The same of the natural size. 14. Part of a barb of a posterior dorsal (or train) feather of Pavo cristatus, magnified, shewing simple barbs. 15. The same of the natural size. On Isopt/re, a new Mineral Species. By W. Haidingee, Esq. F. R. S. E. Communicated by the Author. 1. Description. — Regular forms not observed. Very pure masses of considerable size, often nearly two inches in every direction, occur imbedded in granite. Cleavage none. Fracture conchoidal ; highly perfect, where the mineral is pure ; of lower degrees of perfection, where there are foreign admixtures in it. Lustre vitreous, often considerable. Colour greyish-black and velvet black, occasionally dotted with red, as in the heliotrope. Streak pale greenish-grey. Opake, or very faintly translucent on the thinnest edges, with a dark liver-brown tint. Brittle. Slight action on the magnetic needle. Hardness =5.5... 6.0. Specific gravity =2.912. 2. Observations. — Several specimens of the species of Isopyre are preserved in the cabinet of Mr Allan. Some of them are quite pure, and have no rock attached to them ; others are im- bedded in a kind of granite, chiefly consisting of quartz, crystals of which often penetrate the dark coloured mass of the isopyre. Some of the specimens were procured by Mr Allan three years ago, on a journey through Cornwall, in which I had the plea- sure of accompanying him, from a miner in St Just ; others 264 Mr W. Haidinger on Isopyre. were given to Mr Allan by Mr Joseph Carne of Penzance, whose collection of minerals is particularly rich in the products of the western districts of Cornwall. The west of Cornwall is certainly the native country of the isopyre, but I am unable at present more accurately to indicate its locality, as I then considered the substance actually to be, what it was called, black opal, and, as such, much less interesting than it proved on more attentive examination, and omitted to take a note of the exact locality. The resemblance of the isopyre to obsidian, or to what might be supposed to be the appearance of opal, when of a black co- lour, is very considerable ; only the lustre of isopyre is less bright and glassy than that of obsidian. It is also very much like certain varieties of iron slag, and in fact it would be diffi- cult to suspect the mineral not to be a product of the same kind of fusion which we are capable of producing in our own furna- ces, if it were not associated with crystals of quartz, or did not contain, as in one of Mr Allan's specimens, small imbedded crys- tals of tin-ore and of tourmaline. In allusion to this appear- ance, and also on account of the perfect similarity of a globule melted before the blowpipe, with the fragment employed in the experiment, I propose the trivial name of Isopyre, for designa- ting the mineral, from la-cq equal,, and tcv^ fire. The similarity of properties is even preserved in regard to magnetism, the glo- bule obtained by exposing a fragment of the mineral to the blast of the blowpipe being magnetic, as well as the fragment itself, and even in a higher degree. From the description given * of the Tachylite of Breithaupt, this mineral should much resemble the isopyre. Its specific gravity is much lower, being only 2.5...S.54, so as to preclude the possibility of their belonging to the same species. It occurs in basalt and wacke at Saesebuehl, near Goettingen, likewise on- ly massive. • Leonhard, 2d edit. p. 781. ( ^65 ) Chemical Examination of Isopyre, By Edward Turner, M. D., F. R. S. E., Lecturer on Chemistry, Edinburgh. Com- municated by the Author. -Defore the blowpipe the isopyre fuses without the disen- gagement of any gaseous matter ; and melted with salt of phos- phorus, it gives evident indications of the presence of silica. On reducing it to powder, and exposing a portion of it on pla- tinum wire to the blowpipe flame, a rich green tint appears. Acids act upon it with difficulty ; but it is easily and completely decomposed by an alkaline carbonate. Heated to redness it does not give off water, nor suffer any loss in weight. Having ascertained by preliminary trials that the isopyre con- sists of silica, alumina, oxide of iron, lime, and a little copper, without either manganese or magnesia, I proceeded in the follow- ing manner to the analysis, in which I was assisted by my friend Mr Copland. Of the isopyre in fine ^powder 20.625 grains were mixed with 80 grains of the carbonate of soda, and ex- posed during half an hour to a red heat. The mass, which had acquired a yellowish tint, and contracted considerably, was dis- solved by dilute muriatic acid. The solution was evaporated very slowly to perfect dryness, and the silica separated in the usual manner. After exposure to a red heat, it weighed 9-71 grains, equivalent to 47.09 per cent. The silica proved on ex- amination to be quite pure. From the solution, thus freed from silica, the copper was pre- cipitated by sulphuretted hydrogen. The sulphuret of copper was then dissolved in nitromuriatic acid, the excess of acid ex- pelled by evaporation, and the peroxide of copper precipitated by pure potash. The oxide of copper, after being heated to redness, weighed 0.40, amounting to 1.94 per cent. After separating the copper, the solution was heated with nitric acid, in order to convert the iron into peroxide, and the iron and alumina were then thrown down by a very slight ex- cess of pure ammonia. The peroxide of iron and alumina were then separated as usual by pure potash, and deprived of water by heat. The former amounted to 4.14 grains, or 20.07 per cent., and the latter to 2.87 grains, or 13.91 per cent. ^66 Dr E. Turner's Chemical Examination qflsopyre. The lime contained in the ammoniacal sokition was precipita- ted by oxalate of ammonia. The oxalate of lime, decomposed and rendered caustic by heat, yielded 3.19 grains, or 15,43 per cent, of pure lime. To ascertain if an alkali is contained in isopyre, 30 grains of the mineral in fine powder were decomposed by 180 grains of the carbonate of baryta, and the earthy and metallic substances removed in the way above mentioned. After expelling the am- moniacal salts by heat, there remained a trace of soda, which was most probably derived from the reagents. In order to discover if any acid is contained in isopyre, I de- composed 20 grains of the mineral by carbonate of soda, and removed the soluble parts by distilled water. In the alkaline solution, neutralized by nitric acid, muriate of baryta discovered a trace of sulphuric acid ; but I was unable to detect the pre- sence either of the muriatic, phosphoric, fluoric, or boracic acids. The sulphuric acid is most probably derived from the copper being combined wholly or in part with sulphur ; at least, on digesting isopyre in powder with nitromuriatic acid, the solution was found to contain both a little copper and sulphuric acid. According to this analysis, the isopyre is composed in 100 parts of SiUca, - 47.09 Alumina, - 13.91 Peroxide of Iron, 20.07 Lime, - 15.43 Peroxide of Copper, 1.94 98.44 I forbear to speculate concerning the precise atomic constitu- tion of isopyre, since it is impossible to depend on the purity of a mineral which is both opaque and uncrystallized. With re- spect to the iron, it must in part be in the state of black oxide, as appears both from the colour of the mineral and from its being attracted by the magnet. The copper can scarcely be regarded as an essential constituent ; for, though I have seen no specimen which is free from copper, the quantity of that metal is not con- stant. I found it on one occasion considerably below 1 per cent. ( 267 ) Biographical Notice of' Count Lacepede, and account of his Work on the Natural History of Fishes. i^ouNT Lacepede, in early life, by his experiments and views in philosophy, attracted the notice of Buffon, who ever after re- mained much attached to him. His skill and knowledge of music was so great that he became the friend of the celebrated composer Gliick. He wrote the music of the opera of Omphali, and afterwards an interesting work in two volumes octavo on Music and Poetry, which procured him marks of respect from Frederick II. of Prussia, and, what he Tprized more, the ap- probation and esteem of Sacchini. His works on electricity, and general and particular physics which followed, were not success- ful. Buffon proposed to him to write a continuation of his Na- tural History of Animals, to which he agreed. Some months before Buffon's death, which took place in 1 788, the first volume of. his history of Reptiles, comprising oviparous quadrupeds, made its appearance ; and, in the following year, the second vo- lume, containing the natural history of Serpents, was published. These works are distinguished for the elegance of their style^ and the numerous interesting facts which they contain. About this time, the political agitation of France commenced, and La- cepede was for several years enveloped in the frightful vortex of the Revolution at Paris, from which he escaped with his life by a fortunate chance, and retired to the country. Of all the occupations, says Baron Cuvier, in which M. de Lacepede had been induced to engage, the sciences alone, as is usual with them, remained faithful to him in the time of mis- fortune, and it was with them that he consoled himself in his retreat. Resuming the habits of his youth, passing the day in the midst of the woods or on the banks of the rivers, he traced the plan of his Natural History of Fishes, the most important of his works. Immediately after his return he commenced its com- position, and at the end of two years, in 1798, he found himself in a condition to publish the first volume. Five volumes ap- peared in succession, the last in 1803. This numerous class of animals, perhaps the most useful to man after the domestic quadrupeds, is the least known of all ; it is also- the least calculated to afford interesting developement. 268 Count Lacepede on the Natural History of Fishes. Cold and mute, passing a great part of their life in inaccessible depths, or exempt from those passionate movements which bring quadrupeds so near ourselves, shewing nothing of that conjugal tenderness which is admired in birds, nor of those labours so varied and ingenious, which render the study of insects as im- portant for general philosophy as for natural history, the fishes have scarcely any thing else to present to our curiosity than forms and colours, whose descriptions necessarily follow the same plan, and impress an inevitable monotony on the works which treat of them. M. de Lacepede made great efforts to overcome this difficulty, and often succeeded in doing so. All that he could collect regarding the organisation of these animals, their habits, the wars which the human species wages against them, and the benefit which it derives from them, he has given in a pure and elegant style ; he has even diffused a charm over his descrip- tions of them, whenever the beauties, which have been imparted to them in so high a degree, permitted their being presented to the admiration of naturalists. And in fact, what can afford a greater subject of admiration than those brilliant colours, that glare of gold, steel, ruby, and emerald, profusely poured upon beings which man is scarcely ever naturally to meet with, and which are never almost seen in the obscure depths where they are retained. But still words cannot have the same variety, nor the same glow ; the art of painting itself is insufficient to repre- sent all the magnificence of such scenes. At the same time, the difficulties of which we speak relate only to form, and do not arise from the desire so natural to an author who succeeds Buffon, to be read by people in general. There are others more intrinsic, and of which the naturalist alone can form an idea. Before writing his first page on any class of animals whatever, the naturalist, who would merit the name, must have collected as many species as possible, must have compared them both with regard to their internal structure and external appear- ance, must have grouped them according to their general cha- racters, extricated them from the confused, incomplete and often contradictory articles of his predecessors, and referred to them the observations, still more confused and obscure, of tra- vellers, for the most part ignorant or superstitious, and yet the only witnesses who have seen these animals in their native cli- Count Lacepede (m the Natural History of Fishes. 269 mate, and who could speak of their habits, the advantages which they afford, and the injuries which they occasion. To appre- ciate these testimonies, he must know all the circumstances of the authors which he consults, their moral character, and their de- gree of instruction ; he must be able to read almost all lan- guages. The historian of nature, in a word, cannot overlook any of the resources of criticism (that art of finding out the truth so necessary to the historian of man), and he must moreover join to it a multitude of other talents. M. de Lacepede, when he composed his work on fishes, was far from being placed in circumstances under which the resources of which we speak were entirely at his disposal. The anatomy of fishes was not sufficiently advanced to furnish him with the basis of a natural distribution. A general war had established an al- most insurmountable barrier between France and the other coun- tries ; it had shut up the seas against us, and separated us from our colonies. Foreign books, also, did pot reach us ; nor did travellers bring home those collections, so numerous and so rich, which arrived among us as soon as the seas were open ; even Peron himself, who had been employed in a voyage of discovery during the war, had not arrived when the work was finished. The author, therefore, could only take for the subjects of his observations, the individuals collected in the Royal Cabinet be- fore the war, and those afforded by the cabinet of the Stadthold- er, which was brought to Paris after the conquest of Holland. Of the naturalists who had preceded him, he selected Gmelin and Bloch as his principal guides, and perhaps he followed them too faithfully, punctual as he was in observing the same courtesy toward authors as to society. The drawings and manuscript descriptions of Commerson, and paintings formerly made by Aubriet, after drawings by Plumier, were almost the only un- published resources which it was possible for him to have access ; and yet, with materials so poor, he succeeded in collecting up- wards of 1500 fishes, whose history he traced ; and estimating at the highest the number of species described more than once, a kind of error unavoidable in such a work, and which sometimes he fell into, there would remain from 1200 to 1300 undoubted and distinct species. Gmelin had only about 800, and Bloch in his great work did not exceed 450 ; and there are not more 270 Count Lacepede on the Natural Histori/ of Fishes. than 1400 in his Sy sterna^ which appeared after M. de La- cepede's first volumes, and which was compiled under circum- stances much more favourable. These numbers will still appear small to those who may be aware that the Royal Cabinet in Paris alone now contains up- wards of 4000 species of fishes ; but such has been the activity of science over all the world, since the opening of the seas, that all the collections have been doubled and tripled, and an entirely new era has commenced in natural history. This circumstance derogates nothing from the merit of the writer, who did all that it was possible to do at the period when he commenced his in- vestigations ; and such was M. de Lacepede. Even at the pre- sent day there is no work on the history of fishes superior to his, and he is always quoted on the subject. The work of Dr Shaw, in which the descriptions are arranged according to Lin- naeus's system, is much indebted to Lacepede. And even when the immense materials collected in these latter years shall have been put together in another work, the brilliant pieces of colour- ing, full of sensibility and deep philosophy, with which M. de Lacepede has enriched his work, will not be forgotten. Science, from its nature, is every hour advancing ; there is no observer who may not outdo his predecessors in facts, nor any naturalist who may not improve upon their systems ; but the great wri- ters will not remain the less immortal. The natural history of fishes was followed, in 1804, by that of the Cetacea, which terminates the great system of vertebrate ani- mals. M. de Lacepede considered it as the most perfect of his works ; and in fact he treated the historical and descriptive part, that referring to the organisation, and the methodical characters, better than in any other. His style also rises in some measure in proportion to the grandeur of the objects. He augments by about a third the number of species, enrolled before him in the great catalogue of animals ; but since his time this department of science has also been improved. The posthumous work of Camper, and those of some other naturalists, have thrown much light upon the osteology of the Cetacea. ( 271 ) ' 1 . On Osmelite, a new Mineral species. % Description of a new species of' Pyrites. 3. Mineralcgical eooamhiation of Russian Platina Sand. By Professor Breithaupt of Frey- berg. 1. On Osmelite. X HE name of this mineral is derived from aa-fin smell, and A<^«?, stone. Its characters are as follows : Colour greyish- white, which passes into a tint between smoke and yellowish grey. Planes, which have been exposed to the weather, have their colour changed into dark hair-brown. It consists of thin pris- matic concretions, either scopiformly or stellularly arranged, and these again collected into coarse granular concretions, forming massive portions. Cleavage visible Only in one direction, owing to the thinness of the prismatic concretions, which indeed pass into fibrous. Its form is conjectured to be rhomboidal. Is strongly translucent. It feels rather greasy. Its hardness, owing to the fibrous structure, is difiicult to determine ; it ap- pears, however, from some trials on the file, to be intermediate between that of fluor-spar and apatite. Specific gravity = 2.792 to 2.833. It gives out, in the common temperature of a room, a distinct clayey smell, which is increased by breathing on it, or when brought from a warm to a cold place. In the mouth it tastes like clay, and appears as if it would dissolve like clay, although no change takes place. This species is distinguished from the zeolites by its greater specific gravity. It approaches to tabular spar in hardness and specific gravity, but in no other characters. It occurs superimposed on calcareous spar, mixed with dato- lite, — in veins in trachyte, in a hill at Niederkirchen, near Wolfstein, on the Rhine. % On a new Species of Pyrites^ from Shutter ud, in Norway, This mineral was met with at Skutterud, in Norway, by M. Winkler, brother-in-law to Breithaupt. That mineralogist con- siders it a new species, and describes it under the following name in Poggendorf's Journal. Hard Cobalt Pyrites. — Colour fresh and beautiful dark tin- S72 Professor Breithaupt on Osmelite and Cobalt Pyrites. white. Occurs massive. Primary form hexahedron. Its most distinct cleavage hexahedral, — next in distinctness octahedral, and the least perfect rhomboido-dodecahedral. Traces of con- cretionary structure parallel with octahedral planes, intimate that the octahedral figure is to be expected. Lustre shining and metallic. Hardness equal that of glassy actynolite, or =z 7.25 — 7.75 (Breithaupt's scale). Specific gravity =r 6.74 — 6.84. On charcoal, before the blowpipe, it gives out copious arse- nical fumes. Melted with borax, it affords a beautiful blue glass. Arsenic and cobalt are thus shewn to enter into its com- position. This new species of pyrites is distinguished from the axo- tomous arsenical pyrites of Mohs, by inferior specific gravity and crystallization-system ; from antimonial nickel-pyrites of Breithaupt, by greater weight and greater hardness; from cobalt-pyrites {Weissen Speiss-cobalt), by its more distinct hexa- hedral cleavage and greater specific gravity. It occurs along with glance-cobalt, copper-pyrites, glassy acty- nolite, precious serpentine, quartz, and sometimes cobalt-bloom. S. Miner alogical examination of' Russian Platina Sand. I was favoured by M. Schwetzau with a quantity of the Pla- tina-sand, washed out of the sand of Nijnotaguilsk, in the go- vernment of Perme, in Siberia. Of this Siberian sand there are two kinds: the one is ferriferous, and contains platina; the other, which is purer and more quartzy, afforded princi- pally remarkably fine wash-gold. The platina-sand, even at first glance, appears composed of grains of different kinds. I separated, by the eye, the follow- ing minerals : 1. Platina. 2. Gold. S. Irid-osmine. 4. Silver- white fiit grains. 5. Iseriiie, or magnetic iron-sand. The grains, from their appearance, could not have rolled far, and must have been found at no great distance from the place of their origin, for many of them are very sharp-edged, or even bristled with points. 1. Platina^ grains. — I attempted to separate these from the iserine-grains, by means of the magnet, but was surprised to find that not only the iserine, but also many of the platina-grains, adhered to it. I found that some of the platina-grains were Professor Breithaupt ow Russian Platina Sand. 273 magnetic, others not ; hence these two kinds are probably va- rieties of two distinct species. First species : Commcm Platina. — It is the same with the platina brought from America by Humboldt, and possesses the following characters : Colour platina-gret/^ which is different from steel-grey. On concave places there is observed a yellowish appearance. — The grains are angular and bristled, seldom blunt-edged ; the crys- tals are hexahedral, and grouped, as in silver-glance. — Hard- ness = 70. — 8.5 *. Is perfectly malleable. Specific gravity 17.001 — 17,608. A large American specimen in the Werne- rian cabinet was 16.914. It is well known that the native pla- tina is always lighter than that prepared by chemical means. Second species : Ferruginous Platina. The colour is pZa- tina^grey, but darker than in the preceding species. In hol- lows in the specimens, the surface is tarnished, from dark-brown to black, as in meteoric iron. The grains and crystals have the same forms as in the former species. — Hardness = 8.0 — 8.5. Malleable, but not so completely so as in the first species. Spe- cific gravity 14.666 — 15.790. It is magnetic, and in some grains not only repels, but also attracts. It is distinguished from the former species by lower specific gravity, less perfect malleability, and its affording, by chemical trials, a considerable portion of iron. 2. Gold.—l found few grains of gold in the platina-sand : these were partly gold-yellow, partly greyish-yellow. Is Wer- ner's greyish-yellow gold, gold combined with platina ? 3. Irid-osmin. — This species, which is a compound of iri- dium and osmium, presents the following characters : The colour is not steel-grey, as is generally believed, but a middle colour, between whitish lead-grey and common lead-grey. It occurs crystallized in low hexagonal prisms, which have an axotomous cleavage. Hardness = 8.0 — 8.75. Is imperfectly malleable. Specific gravity = 17.969 — 18.571. It would be desirable to have iridium and osmium again exa- mined. Iridium will probably be found to possess a higher * Scale of hardness here used is that of Breithaupt, in his Mineralogy, 7 — that of glassy actynoite, 8 = that of adularia, 9 = quartz. JULY — SEPTEMBER 1827. S 274 Professor Ossann's Chemical Examination^ ^'C. specific gravity than platina, and probably belong to the tessii- lar system. The osmium, on the contrary, appears to belong to the electro-negative metals, which possess a hexagonal crystalli- zation, such as arsenic^ tellurium and antimony. 4. Silver-white Flat Grains. — They appear to be palladium. Concluding Remark. — In the portion of platina-sand I exa- mined, the large half was ferruginous platina, the smaller com- mon or true platina. The remaining grains composed about J J 5th part of the whole. Chemical Examination of Tourmalifie. By Prof. C. G. Gmelin. vJTmelin arranges the Tourmaline under three subdivisions, these depending on the chemical composition. The following- are the results of his analyses : A Tourmaline which contains Lithion. Three varieties of this kind were examined : 1. Red tourma- line or rubellite, from Rozna, in Moravia ; its specific gravity = 2.96 to 3.02. 2. Red tourmaline, from Perm, in Siberia. Specific gravity =r 3,059. 3. Celandine green tourmaline, from Brazil. Specific gravity — 3.079. The following table gives their constituent parts : 1. 2. 3. From Rozna. From Perm. From Brazil. Boracic Acid, 5.74 4.18 4.59 Silica, 42.13 39.37 39.16 Alumina, . - . 36.43 44.00 40.00 Black Oxide of Iron, 5.96 Oxide of Manganese, 6.32 5.02 2.14 Lime, . - , 1.20 Potash, 2.41 1.29 Lithion, - 2.04 2.62 3.59* Volatile matter, 1.31 1.58 1.58 97.58 97-56 97.02 B. Tourmaline xvhich contains either Potash or Soda, or bothy without Lithion, and a minute portion of Magnesia. Of these the following were analysed: 1. Black tourmaline, from Bovey, in Devonshire, which occurs along with quartz and » With trace of Potash. M. Gmeliu's Chemical examination of J^ourmaline. 275 apatite. Specific gravity = 3.246, at + 8° R. 2. Black tour- maline, from Eibenstock, in Saxony. Specific gravity — 3.123, at -f 8° R. 3. Black tourmaline, from Chesterfield, in North America. Specific gravity = 3.102, at + 8° R. 1. • 2. 3. From Bovey. From Eibenstock, Frrni Chesterfield. Boracic Acid, 4.11 1.89 3.88 Silica, 35.20 33.05 38.80 Alumina, - - - 35.50 38.23 39.61 Oxide of Iron, . 17.86 ... 7.43 Black Oxide of Iron, ... 23.86 Oxide of Manganese, 0.43* ... 2.88 1 Magnesia, - - - 0.70:1: ... ... Lime, . - . 0.55 0.86 ... Natron, - - - 2.09 3.17 § 4.95 Loss, - . . ... 0.45 0.78 96.44 101.51 98.33 C. Tourmaline zvldch contains a considerable quantity of Magnesia. 1. Black tourmaline, from Karingbricka, in the Swedish pro- vince of Westmanland. Specific gravity =z 3.044, at -f- 9| R. 2. Black tourmaline, from Raben^tein, in Bavaria. Specific gra- vity r= 3.113 at -f 13 R. 3. Black tourmaline from Greenland. Specific gravity = 3.062, at -J- 5 J R. 4. Dark brown tourma- line, in mica-slate, from St Gotthardt. Specific gravity not ac- curately determined. 1. From 2. From 3. From 4. From Karingbricka. Rabenstein. Greenland. St Gotthardt. Boracic Acid, 3.83 4.02 3.63 4.18 Silica, - 37.65 35.48 38.79 37.8 1 Alumina, 33 46 34.75 37.19 31.61 Magnesia 10.98 4.68 5.86 5.99 Black Oxide of Iron, 9.38 17.44 5.81 7.77 Oxide of Manganese, 1.89 Trace, 1.11 Potash, - ) 2.53 1 0.48 0.22 1.20 Natron, - / 1.75 3.13 Lime, - 0.25 Trace. ... 0.98 Loss, - 0.03 ... 1.86 0.24 .98.11 100.49 96.48 90.89 The great loss in the analysis of the St Gotthardt tourmaline is not easily explained : it may be owing to the escape of a volatile alkali. * With trace of Magnesia. f With trace of Magnesia. § With Potash and trace of Magnesia, With trace of Manganese. s2 ( 276 ) Chemical Examination of' Russian Platina. By Ch. Ossanw, Professor in Dorpat. JL he Platina, from ore of the Urals, is more varied in character than that found in America. — I have already been enabled to distinguish four different sorts, and I am told there are still more. One of the kinds, that which is most abundant, is sold at the mint in Petersburg. It consists of grains of different de- scriptions. Small grains can be separated by means of the mag- net, resembling the magnetic grains in the platina of Brazil. The other grains are partly of a lighter and darker lead-grey co- lour, and about a line in diameter, — partly of a gold-yellow co- lour, and some are small, flattish, and shining metallic. In the following analysis I used the bluish-grey coloured grains. The following results were obtained in soluble matter : In per cent- Palladium, - - - 0.0198 1.64 Rhodium, - - - 0.1354 11.07 Platina, .... 0.9752 80.87 Copper, .... 0.0245 2.05 Iron, 0.0279 2.30 Sulphur, - . . . 0.0095 0.79 Trace of Iridium. Residuum, - - - 0.0013 0.11 1.1936 98.83 Pogge7idorfs Journal On the Histoiy and Constitution of Benefit or Friendly Societies. By Mr W. Fraser, Edinburgh. Continued from p. 139. V lEwiNG the distributions of Friendly Societies as now quite unconnected with charity, and holding each individual to be entitled to benefit upon the equitable principles of mutual assu- rance, it is essential to the just rights of the members, and to the permanence of every society, that the contributions and al- lowances should be originally made adequate to each other. For this purpose there are three fundamental principles which require, in the first place, to be held as either established or as- sumed, as upon these the whole calculations must necessarily be founded, ^st^ The average rate or quantity of sickness to which the members will probably be subjected in every period of life ; 2d/«/, The rate of mortality or number of deaths that will occur Mr W. Fraser on Benefit or Friendly Societies. 277 at every age ; and, ^dly. The rate of interest which will most likely be obtained for money. These three points shall there- fore be considered in their order. Rate of Sickness. It does not appear that, till within the last half century, the least attention had ever been paid in this or any other country to the law of sickness. About the year 1771, Dr Price, the celebrated writer on Reversionary Payments, first turned his at- tention to the subject, and, during the next twenty years, had it frequently under his consideration. In 1789 he was required, by a Committee of the House of Commons, to compute tables of contributions and benefits for sickness and old age, in con- sequence of a bill then before Parliament, by which it was pro- posed to establish life annuities in parishes for the benefit of the poor, to be defrayed by parochial assessments. In the formation of these tables, Dr Price could not calculate upon the rate of sickness with any degree of accuracy, no satis- factory observations having been previously made upon the subject. He supposed, however, that as death is usually pre- ceded by a longer or shorter period of disease, the average du- ration of sickness among mankind would be in proportion to the mortality ; and as the rate of mortality had been pretty well ascertained, he concluded that the quantum of sickness at cor- responding ages might be reckoned on without great error. He therefore assumed the following individual average rate of sickness, as that which would most probably be experienced by Friendly Societies: Proportion of Age. Sickness. Weeks. Days. Hours. Sick Members. Under 32 years 1.0833 1 14 1 in 48 32 to 42 1.3541 1 2 11 1 in 38.4 43 to 51 1.6249 14 9 1 in 32 51 to 58 1.8957 16 6 1 in 27.42 58 to 64 2.1666 2 1 4 1 in 24 That is, that among forty-eight persons under 32 years of age, there would occur 5S weeks of sickness in the course of a year, or that somewhat more than 2 in 100 would be constant- ly unfit for their employment ; and that among persons from 32 to 42 years of age, from 43 to 51, from 52 to 58, and from 58 to 64, this quantum of sickness would be progressively increased hy a fourth part in each period. 278 Mr W. Fraser on the History mid Constitution of Upon this assumed rate Dr Price accordingly prepared ta- bles of contributions and allowances to the age of 65, and laid them before Parliament ; but added, with regard to sickness oc- curring under 32 years of age, that " various reasons, and par- ticularly the experience of friendly clubs, determined me to believe, that the proportion of the sick to the well in such a so- ciety will not be so great as this, and, consequently, that the weekly allowances during sickness will be more than supported by weekly contributions not exceeding a forty-eighth part of that allowance.'" The Bill and Tables were sanctioned by the House of Com- mons, but lost in the House of Lords, on account of the burden which it was thought the scheme would impose on the landed interest. The tables, however, were afterwards given to the public in the 7th edition of Dr Price's work on Reversionary Payments; but being professedly founded on supposition, and incorporated with subjects of an abstruse nature, they did not meet with that attention which they merited. Till very lately, few societies in England ever adopted them, and even those only partially ; while such tables, it is believed, remained whol- ly unknown to Friendly Societies in Scotland. In the latter country, the first attempt, of which we have any notice, to calculate upon the probable rate of sickness, occurred in 1801, in the case of the Society or Incorporation of Sailors of Prestonpans. A few individuals had endeavoured to deprive the seamen of that town of the privileges and capital of their in- stitution, but they vindicated their rights before the Court of Session, and recovered possession of their funds. Upon the case being finally decided, the Court directed new regulations to be drawn up, and submitted for their approval. This duty de- volved on Charles Oliphant, Esq. writer to the Signet, their law-agent, who having felt great difficulty in adapting the fu- ture allowances to the revenue, consulted with the late Reverend Mr Wilkie, a writer on annuities. This gentleman afterwards reported on the subject, but stated it to be impossible to calcu- late accurately for the schemes of Friendly Societies, so long as the law of sickness remained to be ascertained. The contributions and allowances proposed by Mr Wilkie, however, proceeded on the assumption that one-twelfth part of the members would Benefit or Friendly Societies. ^79 be constantly sick, a proportion which upwards of twenty years' experience has shewn to have been far too high. At a later period, when the numerous failures of Friendly Societies began to attract more general attention, several of their members were led to attend to the probable rate of sickness. Mr R. Wilson, and some other individuals in the village of Methven in Perthshire, instituted a survey to ascertain the sick- ness for one year among the whole male population of the pa- rish above fifteen years of age, with a view to obtain data for calculating the scheme of a Friendly Society ; when it was ascer- tained, that, from mental or bodily imbecility, one in every twenty-one of the male population of that parish could not at any time of their lives have been admissible into a Friendly Society. Mr Gavin Burns of Hamilton, in his pamphlet on Friendly Societies, already alluded to, estimated that one in every twenty of the members of a society would be constantly sick, or at all events not above 1 in 17. Mr Borland of Paisley, and Mr Dick of Bathgate, it is believed, also paid some atten- tion to the subject; but comparatively little benefit resulted from these investigations. The great importance, however, of ascertaining the law of sickness, from actual experience, continued to be still farther pressed on Mr Oliphan^s attention, by his being frequently con- sulted in Friendly Society affairs, and from witnessing the se- rious evils that were constantly arising to their members from miscalculation. At a conference with the intelligent Direc- tors of the Deanston Society, whose questions he had been unable satisfactorily to answer, the expediency of instituting a public inquiry on the subject was forcibly suggested. In 1819, Mr Oliphant brought forward the case in the Highland Society of Scotland, and moved that premiums should be offered to Friendly Societies for returns of the ages of their members, and the sickness which had been found by experience to corres- pond with those ages. This motion was ultimately agreed to, and a committee appointed to conduct the inquiry. Schedules for collecting returns were then issued throughout Scotland, with an exemplification of the form in which the information was required *, and two premiums of twenty guineas each were * The Schedule and Exemplification were both carefully arranged by Mr Will of the Customs. These will be found very useful in assisting such so* 280 Mr W. Fraser cyti tfie History and Ccntstitution of offered for the most valuable returns. In the course of two years, returns were received from upwards of seventy societies, situated in sixteen different counties, embracing periods of 3, 10, 20,30, 40, and even 50 years, and comprising upwards of 100,000 members. The great mass of information thus obtained was carefully digested and arranged by the committee, with the as- sistance of several other gentlemen who took an interest in the subject, but more particularly with the aid of Mr John Lyon, late house-governor of Watson's Hospital, and now one of the Masters of the High School, Leith ; of the late Mr James Skir- ving of the Stamp-Office ; and of Patrick Cockburn, Esq. ac- countant in Edinburgh *. In these returns, the number of free-members (i. e. those en- titled to benefit) during each year, were classed, according to their ages, in decades or periods of ten years ; and the number of weeks'* sickness experienced by each class was arranged in the same manner. The average rate or law of sickness was thence deduced, by allotting to each individual an equal share of the sickness occurring in his class. Thus, supposing the members between 20 and 30 years of age in any society to have amounted to 104, and the sickness experienced by the whole of that class, during one year, to have been 52 weeks, then this was equal to half a week for each, and consequently the same, with regard to the payments, as if one member had been per- manently sick, and received benefit for that length of time. The sickness of the other four classes, or till 70 years of age, was calculated in the same way ; but above that age, and below 20, die number of members was too limited for being the basis of any calculation that could be relied on. The following table of results will exhibit more clearly the mode adopted in classing the number of members and weeks of sickness, as well as the exten- ^ve data from which the law of sickness has been deduced. cieties as may still wish to review their own experience, and they will be seen at pp. 260-262 of the published Report of the Committee of the Highland Society on Friendly Societies. • To Mr James Cleghorn, accountant in Edinburgh, Friendly Societies are also much indebted, not only by the attention which, as Editor of the 6th volume of the Highland Society's Transactions, he paid to the Committee's Report while in the press, but likewise by the ready and able assistance he has since given in establishing several societies upon proper principles. See ^Iso his excellent article on the subject in Farmer's Magazine, vol. xxv. p. 389; Benefit or Friendly Societies. 281 i "^"^ o ^ g Q ? ^ ^ Q CO ^ -JS S "S 05 "« ce Q ^ CI I 8 «5 H Pi O m xn H ^• o O tn w pj 52; g — 1 © Ol in i T}< CO 0< ^ § 1 i •1 lO ■§ CO 4 6 a * 6 f 4 i w H 282 Mr W. Fraser on the History and Constitution of By the results here deduced from actual experience, it appears that there is a considerable diiFerence in the lower ages between this rate and that assumed by Dr Price, his being greater in every period except the two last. It here also appears, that from SO to 50 years of age, sickness gradually increases with the advance of life, in the ratio of nearly one-tenth part of a week for every five years of age, but that after 50 it increases more rapidly ; for, while the annual sickness between 30 and 40 years of age is only about five days, and between 40 and 50 little more than a week, — from 50 to 60 it is doubled, being nearly two weeks, and above 70 upwards of sixteen weeks. This rate of sickness no doubt varied very materially in different societies, being above this average in some and below it in others ; but such discrepancies were seldom found, except in cases where the number of members was too small to afford a range for a fair average. Something, however, may have depended upon the occupations in which the members were engaged, and whether situated in the country or in towns. It is likewise to be observed, that the above is only the annual rate of sickness to an individual, as experienced by societies on an average of each ten years ; and consequently, when exhibited for each particular year of age, it must be somewhat less in the first, and more in the concluding, years of the decade. Thus, the ave- rage sickness in the 60th year of age will be only S weeks 2 days, but in the 70th, 10 weeks 5 days. In order, therefore, to exhibit the whole range of sickness more correctly, and to found a basis for accurate computation, it became necessary to calcu- late two sickness tables, upon a graduated scale, from 20 to 70 years of age. The one of these tables is " with reference to an individual,^'' or " exhibiting the quantum of sickness which an individual, on an average, experiences each year from 20 to 70 years of age ;'"' and the other is " with reference to a society, exhibiting the law of sickness, as affected by the law of mortali- ty, from 20 to 70 years of age ; or the quantum of sickness which takes place each year from 20 to 70 years of age among 1005 persons, all commencing the 21st year of their age at the same time, the number of persons decreasing according to the law of mortality, and the quantum of sickness increasing accord- ing to the law of sickness ; — all shewn in weeks and decimals of a week.'"* These two tables we shall here combine, adding the Benefit or Friendly Societies. 283 number of members alive in the middle of each year, according to the rate of mortality adopted in the Report. LAW of SICKNESS, exhibited in Weeks and Decimals of a Week. Number of Aver. Sick- Average Rate of Sickness Number of Aver. Sick- Average Rate of Sickness Age. Members ness to an Age. Members ness to an alive. Individual. in a Society. 46 alive. Individual. in a Society. 21 1000 .575 575.000 727 1.032 750.264 22 990 .576 570.240 47 714 1.108 791.112 23 980 .578 566.440 48 701 1.186 831.386 24 970 .581 563.570 49 688 1.272 875.136 25 960 .585 561.600 50 675 1.361 918.675 26 950 .590 560.500 51 661 1.451 959.111 27 940 .596 560.240 52 647 1.541 997.027 28 930 .603 .-60.790 53 633 1.633 1033.689 29 920 .611 562.120 54 619 1.726 1068.394 30 910 .621 565.110 55 605 1.821 1101.705 31 900 .631 667-900 56 590 1.918 1131.620 32 890 .641 570.490 57 575 2.018 1160.350 33 879 .652 573.108 58 560 2.122 1188.320 34 868 .663 575.484 59 544 2.230 1213.120 35 857 .675 578.475 60 528 2.346 1238.688 36 846 .688 582.048 61 512 2.500 1280.000 37 835 .702 586.170 62 496 2.736 1357.056 38 824 .718 591.632 63 479 3.100 1484.900 39 812 .737 598.444 64 461 3.700 1705.700 40 800 .758 606.400 65 443 4.400 1949.200 41 788 .784 617.792 66 423 5.400 2284.200 42 776 .814 631.664 67 403 6.600 2659.800 43 764 .852 650.928 68 381 7.900 3009.900 44 752 .902 678.304 69 359 9.300 3338.700 45 740 .962 711.880 70 336 10.701 3595.536 As decimal parts will be hereafter frequently used, and as it is desirable that nothing should remain unexplained to society members, we shall, for the benefit of such readers, give an example of the mode of converting these parts into days, hours and minutes. — The figure to the right of the point sig- nifies so many 10th, the next 100th, and the third 1000th parts of a week. To bring these into days and hours we have only to multiply them first by 7, the number of days in a week, then by 24, the number of hours in a day, inserting a point to the left of the three figures in each sum, and whatever remains is the number wanted. Hence, .575 decimals. Multiplied by 7, the number of days in a week, make 4.025, and by striking oiF the three figures to the right for the three origmally, 4 days remain. And again by 24, the number of hours in a day, .100 .60 make .600, not an hour more, but 6-tenths of an hour, or 26 minutes, as seen by multiplying .600 by 60, the nxmiber of minutes in an hour. Thus it appears, from the above Table, that each society member, during the 21st year of his age, is liable, on an average, to 4 days of sickness. 284 Mr W. Fraser mi tlw History and Constitution of The returns did not state the different degrees or intensity of sickness with such accuracy as could be relied on, but it is stated (Report^ p. 108) that " the following general proportion between the different kinds is drawn from the returns, and may be taken as an approximation to the true one, till future observations af- ford a better standard. " Of 10 weeks of sickness among persons of all ages under 70, 2 may be assumed as bedfast sickness, 5 walking ditto, 3 permanent ditto, In all 10. " Or if the allowances are regulated by the duration of sickness, then of 10 weeks of sickness it may be assumed that 2^ weeks will be sickness of the first quarter, 3 second and third ditto, A\ unlimited duration, In all 10." Such were the results obtained by the inquiry of the High- land Society of Scotland into the rate of sickness among the members of Friendly Societies ; — an inquiry which reflects the highest honour on the philanthropic individuals by whom it was originated and conducted to a close, and which will, from the importance of the results, prove one of the most beneficial un- dertakings of that highly patriotic and useful institution. As already mentioned, the subject was next brought before Parliament in 1825, by Thomas Peregrine Courtenay, Esq., and a Select Committee was appointed by the House of Com- mons to take whatever steps might seem necessary. This Committee did not pursue the course adopted by the Highland Society, — that of requiring returns of the sickness experienced among Friendly Societies in England, but called before them such professional gentlemen and others as were supposed to be best acquainted with their affairs. Neither did they confine their investigation to sickness only, but went into a very wide field of inquiry as to the rate of mortality, the average number of births resulting from each marriage, and various other matters connected with Health and Life Assurance. In attempting, however, to give a brief view of their proceedings, we shall, for Benefit or Friendly Societies. 9S5 the present, confine our attention to what relates to the rate of sickness. By the Minutes of Evidence annexed to the Report it ap- pears, that in England, as in Scotland, Friendly Societies are continually becoming bankrupt, and that very few are esta- blished upon proper principles. It likewise appears, however, that, since the statutory enactment in 1819, which requires the rules of all societies in England presented to the Jus- tices for sanction, to have the certificate of two actuaries or ac- countants that they are founded upon proper calculations, some attention has been paid to the average rate of sickness. Several new societies, upon a very extensive scale, and on scientific prin- ciples, have also been instituted in London, Nottinghamshire, and Hampshire, which promise to have a very beneficial efi*ect on other societies in England. The first witness examined (March 8. 1825) was tlie Reverend J. T. Be- cher, chairman of the Quarter-Sessions of Southwell, founder of the Friendly- Institution there, and author of various pamphlets on Friendly Societies. He states, " Respecting sickness, I have deduced my information from the inves- tigation of several societies, whose rates of assurance, and the state of whose funds, I now submit. I have likewise calculated that the sickness of human life, being the general cause of mortality, is in a great degree commensurate with that of mortality ; it is the relation necessarily subsisting between cause and effect."—" The Southwell tables calculate the number or" sick members under the age of 25 at 1 in 46.22 ; from the age of 25 to 30 at 1 in 37.81 ; from 30 to 40 at 1 in 32 ; and from 40 to 50 at 1 in 27-73 ; which proportions com- mon observation will convince us exceed the 'ordinary proportions of sickness prevailing around us. Indeed, the health of the members in the Southwell Institution has, during the short period of our existence (about two years), been so favourable, and the judgment of the surgeon so satisfactory, that al- though severial have entitled themselves to an immediate allowance in sick- ness, we have, in twenty. one months, only paid L. 1, 18s. for such assurances, and among our members not t death has occurred." — " In the Castle Eden Friendly Society, in the county of Durham, the average number of members during 30 years, ended on 31st December 1823, was 178, and the average pro- portion of permanent sick 1 in 100,1 ; and in the Friendly Society, held at the Crown Inn in Southwell, the average number of members for 29 years, ended on 31st December 1823, was 67-4 ; and the permanent sick 1 in 135.8. In the Friendly Society at Lowth, in Lincolnshire, the average number of members for eight years ended on the 31st of December 1822, was 71'1, and for nine years, ended on 31st December 1823, 74.5. During the former period, the proportion of permanent sick was only 1 in 163.5, and during the latter, 1 in 127.4." It may here be remarked, that, in all these societies, except that at Southwell, the sickness is taken upon an average of the whole members in each society, without distinction of age, in the same way as had been done by the Reverend Mr Wilkie and Mr Burns, in the cases formerly noticed. But it must be obvious, that no satisfactory results could be obtained from any rate of sickness thus deduced, it being evident that, in other societies consisting of the same number of members, but of different ages, a very diffe- rent rate might be found. It will be seen that Mr Becher was fuUy aware of this, for to the question, " Do you conceive that the average quantity of sickness, at different ages, increases as the value of life diminishes ?" he an- ^6 Mr W. Fraser oil the History/ and Constituiiori of swers, " I do, most decidedly ; if there is any authenticity in the returns at- tached to the Report of the Scotch Highland Committee, these will confirm it — You think that as a man advances in life, he is more liable to sickness ? Undoubtedly he is, both in its frequency and in its duration Are you ac- quainted with that table C The table of the Law of Sickness, framed by the Highland Society, given at p. 283. of this Journal p I am acquainted with the Scotch ta- bles ; and here the Committee will see that their progression of sickness be- gins at 21, and goes on increasing until the age of 70." Report, pp. 28, 29. March 10. — Mr George Glenny, actuary to the Royal Union Association or Friendly Society, London — " Are you acquainted with the Report on Friend- ly or Benefit Societies, lately published by a Committee of the Highland So- ciety of Scotland ? Yes — Have you examined the tables annexed to that Report ? Yes. — State your opinion of them ? My opinion is, that the data are too low. — You mean by too low, too low for the districts with which you are acquainted ? Yes. — Do you apprehend that the data upon which the ta- bles were foniied were incorrect ? 1 must give a qualified answer. I think the tables, as produced from the returns which were made, correct ; but there are many reasons which I could give why the returns should not be correct. I apprehend, that if any societies did not send their returns, they would be the societies whose aflTairs were the most desperate, and who would naturally have the greatest reluctance to an exposL I do not know that any society did so refuse, but the great variety of the returns, the great variety of the data to be taken from each of these returns, induced me to think, that al- though it will be highly useful, in every stage of Friendly Societies, to con- sult these, yet they are not sufficiently high to use for tables of contribution. — Does not that very much depend on the payment for management ? Great- ly ; I provide the table first for the benefits, and then I put on every month- ly payment a certain sum for management, which I think adequate." — " Ha- ving the book there, refer to Table III. (supra p. 283.) have you constructed any table upon a similar principle ? Not exactly. I have obtained results upon a similar principle, upon which I have calculated my tables — You mean you have obtained results from a variety of Friendly Societies ? From a va- riety of Friendly Societies, and from a variety of bodies of men, and manufac- turers. I have also obtained the opinion of a vast number of medical men, on the average sickness of population — Could you easily construct a table upon a similar principle ? I am now occupied in such an undertaking, but it is an undertaking of such magnitude, that I do not consider myself in a state to give up the results at present. I do not think them sufficiently correct. I have formed my sickness tables in the Royal Union from very closely exa- mining those of Dr Price, and making very little alteratioa for actual obser- vation ; and I am confirmed in an opinion now, that notwithstanding what may have been done, at present Dr Price's sickness tables are the nearest cor- rect of any thing yet published — You consider them a trifle too high ? I do." Mr Glenny then states, that, in many professions, such as gilders, painters, watchmakers, and workers in lead, he had found the sickness or inability for labour very great, although the mortality was by no means greater than among other professions. — Pages 39, 40. March ll.—John Finlaison, Esq. actuary of the National Debt Office " Have you attended at all to the average prevalence of sickness at different ages ? I have not ; because I conceive it is totally impossible to obtain au- thentic materials, sufficient to reduce that subject to any certain law." " When you say that sickness is incapable of valuation, you mean that there are no data whereon any calculation can be made ? I mean that life and death are subject to a known law of nature, but that sickness is not ; so that the occurrence of one event may be foreseen and ascertained, but not so the other." — " Do you apprehend that the same law, that is to say, the same ha- bit and frequency of occurrence, exists as to sickness as with respect to death ? I apprehend there is no certainty of this conclusion Not in the same climate, and among the same class of people ? I should apprehend not ; at any rate, no observations have been hitherto published that would shew that sickness follows any general law — Are you acquainted with Dr Price's 2 Benefit or Friendly Societies. ^87 tables as to sickness ? I am — Are you aware upon what principle they were formed ? I apprehend they are not formed upon any authority that would induce me to adopt them ; they are very vague. They were formed upon this principle, that sickness increases in the same proportion as life advances ? Yes, but I deny the conclusion ; there is a constant and given mortality ope- rating upon life, but no such law exists as to sickness." — *' Are you accjuaint- ed with the Report of the Highland Society of Scotland upon the subject of Friendly Societies ? I am not, further than that since I have been before the Committee, I have looked at the Report from that body — You are aware that the sickness table appended to that Report is formed upon the experience of 70 or 80 societies in Scotland ? Yes — Supposing the returns from those societies to be accurate, do you conceive that Table III. {supra, p. 283) is formed therefrom upon correct principles ? I do not ; because, in the first place, supposing it were possible to conceive that sickness foUoAvs, among particular classes of men, an uniform and constant law, still the returns now shewn to me, and their results, are exceedingly vague, and much too limited, in my decided opinion, to enable any correct inference to be drawn of the rate of sickness to which human life at every age is subject, because it is not clear from the returns, whether the parties were of the ages stated when en- rolled, and whether the sickness grew out of each class enrolled at each age, or whether the ages at which the sickness is stated to have occurred, took place when the parties enrolled at a younger age had attained an advanced age. I may add, generally, that the extraordinary differences of sickness among the societies reported, is the strongest reason with me for doubting the correctness of any conclusion to be drawn from the whole ; besides, the sickness which may prevail in various districts of one country among one particular class of persons, affords no just criterion of that which may prevail in another country, under other circumstances: And, aj^ain, I beg leave to submit my humble but firm opinion to the Committee, that it is totally im- possible, from any observations hitherto formed, to deduce the conclusion, that sickness occurs in any given ratio, the more as this question is not new to me, having been frequently before applied to on the subject, and having considered it very maturely.'* Page 47- March 15. — William Morgan, Esq. actuary to the Equitable Assurance Society, and upAvards of fifty years engaged in calculations depending on human life, states, that he has of late been frequently referred to upon the rules of Friendly Societies; that he has always found the tables of Dr Price correct ; and that the opinions he has since given on particular tables submitted to him, have been, as far as the cases were applicable, formed upon the same principles as those tables. — " Have the goodness to state to the Committee the principle upon which you calculate the probable occurrence of sickness ? I take them pretty much according to the degree of mortality ; I suppose about 1 in 40 sick. The table says 1 in 48, and I find that accords more with actual experience." — " Do you think it consistent that there may be a great deal of sickness, and yet that it may not affect life ? No, I estimate from experience in different clubs. I have had a ma- nuscript paper of Friendly Societies, sent me from Scotland, for many years, which confirms the rate we take." — " Plumbers and glaziers, and other ha- zardous trades, are excepted out of the clubs." — " Are you acquainted with the Report lately published by the Highland Society in Scotland, on the subject of Friendly Societies ? They sent me the book, but I have not had time to read it." — Pages 50, 51. March 18 — ^]\'Ir Joshua Mibie, actuary to the Sun Life Assurance Society, states, that he has been frequently called on professionally to settle the rules or tables of Friendly Societies, but that in no instance had he been able to give the information wanted, as they could not be reduced to calculation. — " You are aware of Dr Price's tables ? Certainly, but I have never inves- tigated them — You are aware of the principle on which they are formed ? Not very accurately, not from accurate information. I beg leave to state the reason why I have not looked more accurately into the tables in Dr Price's work : it was, that I was satisfied, on looking at the subject, that there could 288 Mr W. Fraser on the History and Constittition of be very little dependence placed upon them ; they seem to have been taken on a gross average ; that such must be the average of sickness ; and I had no data from which my conclusions could be drawn entitled to confidence."— Page 56. March 18 John Finlaison, Esq. again examined. He is " stUl of opinion that, with the materials now existing, we are unable to reduce the event of sickness to a determinate law ; but, nevertheless, I apprehend that it might be considered analogous to insurance against fire and sea-risk, and judged of by experience with tolerable accuracy." He farther observes, that there ex- ist extensive data for forming a judgment on the subject among the labour- ing classes in his Majesty's arsenals, as also in every regiment in England, and submits the propriety of obtaining returns from these and similar sources. He likewise handed to the Committee the form of a return, which he con- ceived Friendly Societies could comply with, and without any difficulty. — Page 68. April 22 Charles Oliphant, Esq. convener of the Committee of the Highland Society on Friendly Societies. This gentleman having explained minutely to the Committee the way in which the returns to that body had been collected, and the manner in which their sickness table was framed, Mr John Finlaison was again called in. " When you gave an opinion to this Committee on the 11th of March, upon the formation of the Scotch Tables, had you made yourself master of the mode in which the tables were constructed in their book ? I had not ; for I only then saw the book for the first time in the committee-room." — " Have you looked at the Report since ? I have : I have looked at the Report, and looked at the mode in which the tables were constructed ;" but he is still not able to give any farther " opi- nion upon the tables, except that as much was done as was possible with the means which the framers of that Report possessed ; yet I think that the data must be considered as far too limited to deduce tables of premiums from. — When you say that the data are far too limited, do you mean that the num- ber of persons was too small ? Yes ; but I consider that the foundation is laid by that method for perfecting the information, so that at a future period something may be done. — You conceive, then, that the mode which the High- land Society adopted was the correct mode of coming to the result they de- sired ? I am not exactly prepared to give an opinion upon that question ; I don't know that it is the best mode that could be adopted.— Because you said before that it was not ? Will you be so good as to read what I said before on that subject ? You were asked, ' You are aware that the Sickness Table ap- pended to that Report is framed upon the experience of seventy or eighty societies in Scotland ; and then, supposing the returns from these societies to be correct, do you conceive that Table III. is formed upon correct principles ?' and you said you did not ; Now, are you satisfied upon that point ? I am not any farther satisfied than I was before." Mr Oliphant re-examined. " You heard the last observation of the wit- ness (Mr Finlaison), will you have the goodness to make your observations up- on it ?" " The statement made by Mr Finlaison is mentioned in his deposi- tion, which I have seen ; but he mentions that he had not read the report at that time. On looking at the report you will please to observe, that the sick- ness is always referred to the exact age when it occurred. Under the column Free Members, the number of members during the year is given in each class ; and under the head of Allowances, the sickness arising in that class, and during that yeM", is given. The error into which Mr Finlaison has fallen, may have arisen from the abbreviated form in which it was necessary for us to exhibit the results. The details from which these are derived form a volume about the size of an ordinary atlas. We could not publish such voluminous details, and the abbreviated form adopted in exhibiting them, has, I presume, given rise to the misconception." — " What proportion of the societies do you ap- prehend did give the information ? An extremely small proportion. Whilst from the whole kingdom of Scotland, we collected returns from between 70 and 80 societies, I have had an application from the societies of Edinburgh, Benefit or Friendly Societies. 289 signed by the representatives of from 40 to 50 societies, which shews that the number giving returns was a very small proportion."—" Do you apprehend that there are any other means by which more extensive information, with re- spect to the Scottish societies, might be obtained at present with respect to Scotland ? I do not think that there is ; for it was not, I am persuaded, so much from the want of inclination that the number of returns was limited, as from the want of ability. Returns could only be made where the society clerk, or some of the members, had a taste for research and calculation, and the moment that societies come to keep their" records in a proper way, there will be no difficulty, I apprehend, in getting information. The Highland So- ciety are endeavouring to induce them to keep their books in a more cor- rect form, by offering premiums to the schoolmasters of Scotland to assist the Friendly Societies, by framing and teaching systems of book-keeping adapted for these institutions ; and it is contemplated, in the course of a few years, their books will be so arranged as to afford readily every desirable informa- tion. If further returns are then called for, I am satisfied they will be given willingly to any extent that may be required. There is a change of feeling taking place, and the reserve which formerly prevailed, as to affording infor- mation, is wearing fast away." — " Has the average sickness in the Scottish^ so- cieties, been compared with any statement that may be depended upon of sick- ness in England, or elsewhere ? So far as my information extends, no in- quiry as to the average rate of sickness, with reference to the age of indivi- duals, had been instituted any where, previous to that by the Highland So- ciety of Scotland."— " Except the statement given by Dr Price, which pro- ceeded upon supposition, I do not know any statement that has been given of sickness, with which the results of the Highland Society's inquiry can be com- pared."— Pages 74, 76, 80. Several other gentlemen and managers of Friendly Societies were examin- ed, but as their opinions, and the various institutions to which they referred, were all founded on Dr Price's rate of sickness, it would be superfluous to enter farther into detail. We shall, however, give the concluding deposi- tion of a gentleman already frequently noticed, and the substance of certain documents therein referred to. June 17. — " John Finlaison, Esq. again farther examined. Have you, since you were last liere, provided the proposed Form of Return to be made by Friendly Societies ? I have, and beg leave to give it in amended, contain- ing the additional information which the Committee desired — Have you any thing further to add to the Committee ? Having now been examined before the Committee several times, on the subject of sickness, I beg to observe, that I have devoted very particular attention, and have gone through a great deal of investigation, to ascertain whether sickness, throughout the whole or any part of human life, follows a constant law ; and the result of those inquiries has been, that I must modify, in a very great degree, the opinions which I originally delivered. I am now strongly inclined to think, that the recurrence of sickness is constant to a much greater degree than was hitherto supposed ; and I am supported in that opinion, no less by the facts and reasoning con- tained in the memoir which I have this day submitted, than by an extraordi- nary result, deduced from a work published by Sir Gilbert Blane in 1822, on the diseases in London, in which I find a remarkable consistency in the pro- portion between sickness and death. Now, as the rate of mortality is known, the rate of sickness, if the average time that each person were sick be computed, is also known. Thus, in Sir Gilbert Blane's book it appears, page 152, that, in the course of his private practice, he had 3,816 cases, which gave 382 deaths, which I infer was among the higher classes ; whereas in his hospi- tal practice at St Thomas's, comprehending entirely the lower orders, and certainly the severest kinds of sickness, he had 2,406 males, out of whom 239 died, and 1429 females, out of whom 135 died ; so that it appears, that out of 10,000 patients, 1001 of the upper classes died, and 993 males, and 944 females, which I think a very surprising coincidence ; and which farther demonstrates JULY SEPTEMBER 1827. T ^9(J Mr W. Fraser on the History and Constitution of this important fact, that very severe sickness among the lovver orders is not more frequently terminated by death than among tlie higher. If, therefore, the simple fact of the average time of sickness had been stated, there would be no difficulty in computing the sick allowance ; and this fact, as well as an ex- tension of the inquiry, is very easily attained by reference to the records of the other hospitals in London. I beg farther to inform the Committee, that the hypothesis which I hazarded in the conclusion of my memoir, is, on stating the same to several physicians, considered to be reasonable, and is, in fact, completely supported by the above details. — You have stated the results of Sir Gilbert Blane*s practice among the higher orders, and also of his hos- pital practice ; do you not think a very different result might be expected from the mortality of the lower classes, who have not the advantage of get- ting into hospitals ? I certainly had supposed that those who were admitted into hospitals were the lower classes, as fer as concerns London, and the worst cases ; but although there may, in other parts of the country, be many of the lower orders, who have not the advantage of getting into such establishments as the hospitals in London, yet I am not prepared to say that the mortality among them would be greater, for this reason, because, in slighter cases, the coun- try situation would seem to have its advantages, and in the severer sickness they can in general receive medical advice and attendance, if not the com- forts of an hospital. I am not, however, able to form any conclusion as to how the fact may be. In reference to the conclusion to be derived from Sir Gil- bert Blane's details, I beg to observe, that, supposing them to be borne out by farther researches, they are most important in enabling us to determine the sickness Avhich occurs at one age as compared with another, for, by the law of mortality already discovered, we know the number of deaths which takes place at each age. Now, by Sir Gilbert Blane's statements, it aj pears that the number of patients were ten times the number of deaths. In my hy- pothesis, however, I assumed, that the sickness which terminated mortally was only a twelfth, and not a tenth, of the whole sickness which occurs, because, in reference to the patients mentioned by Sir Gilbert Blane, as having been received into the hospitals, it is to be supposed that those very patients may have had sickness for some time at least before applying to be admitted into the hospital, and that some of them also left the hospital without being cured. I allow, therefore, two-twelfths for these circumstances, and I think, that, with that allowance, the proportion between sickness in general and sickness which terminates fatally, is as supposed by me in the Statement which I gave in, and had written before I read Sir Gilbert Blane's Report." — Pages 96, 97. In the Statement above referred to, Mr Finlaison gives the following opi- nions, and interesting observations. " With regard to the quantum of sickness prevailing among individuals in the labouring class of society, there are at present no other materials extant for estimating its amount, than those collected by the Highland Society ; but it will be seen in the sequel, that, although I have laid down, in the shape of tables, the conclusions resulting from those materiiils, I am aware that those conclusions cannot be relied on, even for ordinary purposes, with safety, nntil further information on this important subject is collected. They are, how- ever, capable of being fully rectified or corroborated by materials, which are for- tunately accessible, and which can easily be furnished on an extensive scale, if your Honourable Committee should so require." "It appears that the whole number of weeks allowances in the above state- ment (that of the Highland Society), which were granted to persons of all ages under 50, was ...:,- 65,008 " While the total number of members, co-existing under the age "J of 50, some or other of whom must have received the said allow- > 85,945 ance, was - _.-----l which is the same as if each one of them had received .75639071 fractional parts of a week's allowance in every year under 50 years of age. It is, how- ever, to be kept in mind, that members, on entering Benefit Societies, are usually admitted under 30, at least in the majority of instances, and they Benefit or Friendly Societies. 291 would be rejected, if, on becoming candidates, they were in unsound health, which may account partly for the diminution of sickness in the younger classes of age, in the foregoing statement, without inferring that sickness is of less frequent occurrence in general at those ages." " Materials exist, however, which may be furnished with facility, for esti- mating the sickness now actually prevailing among the labouring classes, to a degree probably of very considerable accuracy. There is in the Navy Office a Pay List received annually from each of the seven Dock-yards, containing the age of every workman, artificer, or labourer, in those great establishments, the amount of his wages or earnings in the year, and the number of days in which he received no wages, by reason of sickness, the fact of such sickness being always verified by the public medical officer. I have not been permit- ted to avail myself of this document extra-officially, else I would now have submitted the result to your Honourable Committee; but, on a cursory view, and taking out the cases of the first 313 names that presented them- selves, I observed that they had been subject to 1403 days' sickness, out of the number of working days in a year, Avhich probably do not exceed 307 days. Which is the same as if .0146 parts of his whole time were lost by each man, or .7592 parts of a week ; and this coincides surprisingly with the sickness reported by the Highland Society, under 50, which, as above stated, was .75G39 parts of a week." " The State of Sickness prevailing among the Army in garrison and quar- ters in England, presents, however, a very different result from the returns made to the Highland Society. An Abstract is preserved in the Adjutant General's Office, of the musters made on the 25th of every month, of each regiment or corps in England, showing, exclusive of officers and non-commis- sioned officers, the number of rank and file actually in England composing the corps, with the number of them who are sick on the day of muster, whe- ther they are in general hospitals, regimental hospitals, or sick quarters. These details are all carefully summed, in three divisions, for Cavalry, Infantry, and Foot-Guards, so that the result for any number of years may be copied out with the utmost facility. It is understood, that at present there are few, if any, in the army, above the age of 45, and that their average age is decidedly under 30. Moreover, it is well known, that they are picked and chosen young men when entered, and that those who afterwards become diseased and un- healthy, are discharged from time to time ; that they are regular in their habits, free from exhausting labour, from the cares of families, and from most causes which superinduce disease. Their occasional sickness cannot easily be mi*ch exaggerated by imposture ; and abating the single consideration, that some part of them are perhaps regiments returned from foreign service with debilitated constitutions, it would, on the whole, seem that the army quar- tei-ed in England ought to present sickness at a minimum among mankind. " I have been favoured with the results for each month, in the years 1823 and 1824, which I have combined ; and it appears, The Total Rank and File present, or Of whom there were constantly Sick at accounted for in 24 Musters the time the Musters took place. Cavalry, - - - - 94,293 3,791 Infantry, - . - . 126,513 6,297 Foot Guards, - - 92,889 3,961 Total, - - 313,695 14,049 So that there were constantly sick of the Cavalry, - 4.0204 per cent. of the Infantry, - 4.9773 per cent, of the Foot Guards, 4.2642 per cent. And of the whole Army, 4.478553 per cent. T 2 292 Mr W. Fraser on the Histori/ and Constitution of' " It further appears, that, in the two musters which took place, Rank and File. On 25th January 1823 and 1824, there were 24,281 25th February, 25th March, - 25th April, 25th May, 25th June, 25th July, 25th August, - 25th September, 25th October, 25th November, 25th December, 25,11^ 25,183 2C,157 26,244 25,649 25,417 27,007 27,416 27,401 26,840 26,983 Of whom Sick. Per cent. 1089 being 4.4850 1107 ... 4.40737 1148 ... 4.55862 1220 ... 4.66414 1227 ... 4.67535 1134 .•• 3.51190 1027 ... 4.04060 1385 ... 4.86911 1340 4.88766 1244 ... 4.53998 1135 ... 4.22876 1063 ... 3.93952 Total, 313,695 14049 being 4.478553 So that For every 100.000 sick on 25th June, there were 112.176 ... 25th Dec. ... 115.054 ... 25th July, ... 120.412 ... 25th Nov. ... 125.498 ... 25th Feb. ... 127.705 ... 25th Jan. ... 129.274 ... 25th Oct. ... 129.805 ... 25th Mar. ... 132.774 ... 25 th April, .... 133.129 ... 25th May, ... 138.645 ... 25th Aug. ... 139.174 ... 25th Sept. But, on the whole two years, the rate of sickness is remark- ably constant and uniform, and being equal to 4.478553 ^ cent, this is the same as if 100 soldiers had sustained among them 233 - weeks of sickness every year, or as if each had been sick 2.33 weeks, which is more than thrice the quantum of sickness prevail- ing among Benefit Societies, ac- cording to the returns of the Highland Society. " In this state of uncertainty, and until more extensive information as to the sickness prevailing among the labouring classes can be obtained, we can only adopt the data furnished by the exertions of the Highland Society as the measure of Value for Sick Allowances ;" and, upon that data, Mr Finlaison then gives numerous rules and tables, shewing, at every age, the sums requi- site for defraying any specified allowances, in sickness, old age, and at death. He concludes by remarking, that " If, in our present uncertainty as to the fact of the frequency and duration of sickness among the labouring classes, we were permitted to assume, what may seem a reasonable hypothesis, the following might perhaps be hazarded, merely as speculation : 1st, That every sickness terminating in death is, on a medium, of five weeks' duration ; and, 2dly, That the sickness which terminates in death is, on a medium, one- twelfth part only of the sickness to which mankind is subject." — Rep. p. 152. The Committee also applied for information on the subjects of their in- quiry to the Philanthropic Society of Paris, through Baron B. Delessert, a gentleman who, in connection with that institution, had taken a great deal of trouble on behalf of Friendly Societies in France. A number of interesting do- cuments were in consequence received as to the population, births, and mortality of France ; but the Baron remarks, that, " although our researches were re- newed, on the publication of an interesting Report made by Mr Oliphant, in- serted in the Transactions of the Highland Society, we have not as yet been able to procure from the different societies in Paris, a table of diseases and mortality sufficiently accurate and complete to send you. But after an ex- perience of fifteen years, we have satisfactory grounds for believing, that out of 100 operatives, from 20 to 60 years of age, there are constantly on an ave- rage one to two confined to their beds by sickness ; and two to three suffering under lighter illness, or convalescent."— i?^;). p. 162. Benefit or Friendly Societies. 293 We have been thus liberal in our extracts, from a desire to give all the information which has been hitherto obtained re- garding the average rate or law of sickness, — a subject entire- ly new to the great body of the members of Friendly Societies, but which must of necessity form an essential element in fra- ming the tables of every society on proper principles. From the evidence above quoted, it will be seen that consider- able dubiety at first existed even among some of the professional witnesses, as to the practicability of reducing the occurrence of sickness to any given law ; but it will likewise be seen, that every doubt was removed, as soon as due attention was paid to the subject. On a question so lately brought forward, and so difficult of solution, as the true rate of sickness, it is not surprising that there should have been some discrepancy of opinion. On this point, however, the Committee, after referring to Dr Price's Table, report to the House of Commons as follows : " Mr Morgan, the nephew of Dr Price, and actuary to the Equitable As- surance Office for Lives and Survivorships, continues to use this table ; and Mr Frend, actuary to the Rock Assurance Company, and also an eminent mathe- matician, entirely concurs with Mr Morgan. These two gentlemen have been employed in certifying, under the act, the tables of a great number of societies \ among others those of a very considerable society, which has attracted much of the public attention, the Friendly Institution founded at Southwell in Nottinghamshire, by the Reverend John Thomas Becher, under the presi- dency of Vice-Admiral Sotheron, one of your Committee. " The tables of this society have been adopted by a society upon a large scale lately formed in Hampshire, by Mr Fleming, another of your Commit- tee, and by others which are in progress. The payments required by these tables, for provision against sickness, are somewhat greater than those requir- ed by Dr Price ; the excess may be considered as necessary, for greater, secu- rity, and for the expence of management." " The House will find in the evidence, and in the paper of Mr Finlaison, frequent reference to the Scots Tables. The tables here intended, are those which are appended to a Report on Friendly or Benefit Societies, exhibiting the law of sickness, as deduced from returns by Friendly Societies in diffe- rent parts of Scotland, drawn up by a Committee of the Highland Society of Scotland." " Returns were received from about 80 Societies, and various tables were constructed upon the result. One of these was framed upon a principle entirely new, (see above p. 283.), and purported to give in weeks and decimals of a week, the average duration of sickness likely to occur to an individual of each age, during a year. This average is found to be, in all the earlier periods of life, considerably less than the average assumed by Dr Price, or in the Southwell tables. Whether this difference is owing to a defect in the form in which the statement of facts was required, to the defective mode in which the requisition was answered, to the superior healthiness of the dis- tricts to which the returns applied, or to what other cause, your Committee have not formed a decided judgment. Much detail upon all these points will be found in the evidence ; but the Committee have not found it necessary to pursue a more extended inquiry into this question, because they trust that they have procured, and still more that they will have pointed out the means of procuring, a body of information, more complete, more accurate, and 4 Mr W. Fraser mi the Historic and Constitution of more generally applicable. They desire, however, to recommend the Re- port to the perusal of all persons who take an interest in inquiries of this na- ture, and they have derived many valuable hints from the proceedings of the society, and from the evidence of Mr Oliphant, writer to the Signet, by whom the Report was framed. *' But the Committee certainly do not feel justified in recommending these Scots tables, or any which require payments lower than those required at Southwell, for adoption by any society in England." — Rep. p. 14, 15. Such is the conclusion which has been come to by the Ho- nourable Committee, with regard to the tables that ought to be preferred for benefits during sickness ; and it now only remains to consider how far that conclusion is supported by the facts and evidence which have been adduced. The highest rate of sickness exhibited, is that of the army, which is more than treble the average deduced by the Highland Society ; but it will be obvious that the sickness of the army can never apply to the working classes. The operative cannot give up his work upon every slight accident or illness, but must continue as long as possible to labour, on account of his society allowances (if any) being usually less than his wages, by the wants, perhaps, of a family, and from the danger of being de- prived of his employment. The very slightest indisposition, again, immediately consigns a soldier to the hospital ; and nei- ther is he restrained by any pecuniary interest from practising imposition, for, during sickness, his pay is always sure, he is not afraid of losing his situation, and he is freed from all duty what- ever. These and other causes may go far to account for the high rate of sickness resulting from the army reports. The rate of sickness assumed by Dr Price was acknowledged even by himself to be higher than what would probably be found by experience, and Messrs Finlaison, Glennie, and some others are of the same opinion. A still higher rate, however, (no less, under 50 years of age, than double that appearing from the returns to the Highland Society), has been assumed for the tables of the society at Southwell, although the Reverend Mr Becher, their manager, is convinced that it " will exceed the ordinary proportion of sickness prevaihng around us,"*"* and although no general experience has yet shewn such a rate to occur. It is likewise to be observed, that such an excess is not required by this society for the expence of management, a se- parate fund being otherwise provided for that purpose. The law of sickness deduced by the Highland Society of Scot- Benefit or Friendly Societies. S95 land was obtained by taking the means of 101,510^ weeks oi* ac- tual sichness^ which had been experienced among 1 00,81 7 society members, at all ages, variously employed, and situated both in the country and in towns. That rate, again, according to Mr Finlaison, is verified by the sickness occurring among the arti- ficers under 50 years of age, employed in his Majesty's Dt)ck- yards, their average sickness being .75920 parts of a week, while that obtained by the Highland Society is .75639. This coinci- dence, however, is rather remarkable, and it will probably be found, lipon farther investigation, that the average rate of sick- ness of the artificers in the Dock-yards is considerably above that of the working classes in general ; for, besides the epide- mic diseases and extremely noxious employments to which those in the Dock-yards are well known to be exposed, " it is calcu- lated, that, upon an average, between three and four thousand men annually wound or otherwise injure themselves in following their mechanical occupations in the Dock-yard, to such an ex- tent as to oblige them to apply for chirurgical assistance ; and that of the aggregate number, about four hundred, or about the proportion of one to nine or ten, are for a time incapaci- tated from pursuing their labours. During the last six months of the year 1824, viz. from the 24th of June to the 31st of De- cember, upwards of 250 of these mechanics were laid up from their duty, in consequence of various hurts, more or less severe, but none of them presenting any thing peculiar in their character or circumstances *."" From all those facts, then, and with the utmost deference for the opinion of the Committee of the House of Commons, we must be allowed to conclude, that the high rate of sickness as- sumed by the two societies in Nottinghamshire and Hampshire is not warranted by the experience of the working classes in general, — that the Law of Sickness deduced by the Committee of the Highland Society is the most satisfactorily authenticated of any yet published, — and therefore, that, until a better stand- ard be obtained, the tables given in the Report of that body • See observations on Dr Butter's " Remarks on Irritative Fever, com- monly called the Plymouth Dock-yard Disease," in the Edinburgh Journal of Medical Science, vol, i. p. 361. 296 M. F. Tiedeman on the Brain of the Common Dolphin should be held as a guide for at least all Friendly Societies in Scotland. As formerly mentioned, a Select Committee of the House of Commons was again appointed during the session of 1827 ; the result of whose labours we shall be enabled to give in a future Number of this Journal. {To he continued.) The Brairi of' the Common Dolphin compared with that of Man. By M. F. Tiedeman. J3JL* Tiedeman proposes to publish, in the Journal of Phy- siology, conducted by Treviranus and himself, a series of mo- nographs on the brain of. various animals, with the view of sub- sequently eliciting conclusions relative to the structure of the brain in general, or to its organisation in the different classes and orders of the animal kingdom. In volume second of the Journal of Physiology there is a very interesting memoir " on the brain of the dolphin, as compared with that of man *."" With reference to the points of resemblance, and the diffe- rences that present themselves on comparing the brain of the dolphin with that of man, M. Tiedeman states the following re- sults, 1. The brain, properly so called, of the dolphin, is distinguish- ed from that of monkeys, by its great size, and next to the brain of the orang-outang approaches nearest, in this respect, to the human brain. In relation to the nerves, the spinal marrow and cerebellum, it is much smaller than the brain of man. The individual, of which M. Tiedeman dissected the brain, was six feet long. The author does not mention the weight of the brain, but the figures ,( which, however, appear a little diminished,) and the different parts pointed out in the description, may afford an idea of it. % Each of the cerebral hemispheres is composed, as in man ^id the monkey tribe, of three lobes, an anterior, a middle, and * ^eitschr. fur Physiologic, t. ii. p. 251. compared with that of Man. 297 a posterior. The hemispheres are evidently smaller in proportion than in man, for they do not cover the cerebellum completely. 3. The brain of the dolphin is comparatively much broader than that of man, while the contrary is the case in the other mammiferous animals. The shortness of the brain in the dol- phin is probably connected with the absence of olfactory nerves. 4. The cerebral hemispheres of the dolphin present much more numerous circumvolutions and grooves than those of any other animal. They are even proportionally more numerous than in man. In the latter, also, their arrangement is not sym- metrical, contrary to what is observed in all other animals. 5. The lateral ventricles are composed in the dolphins, as in man and the monkeys, of three horns, an anterior, a middle, and a posterior ; while two horns only are met with in the other mammifera. 6. The mammillary eminences are blended into a single mass, as in most of the other mammifera. Man, and the orang-outang, on the contrary, present two distinct eminences. 7. The three pillared vault, the cerebral partition, the cornua ammonis, and the corpora striata, are, with relation to the brain, smaller in the dolphin than in man. 8. The quadrigeminous tubercles form, as in the other mam- mifera, larger masses than in man. 9. The cerebellum is distinguished by being proportionally larger than in man, and its middle part is not symmetrical, as in seals, and several other animals. 10. The medulla oblongata has not the trapeze, as in man and the orang-outang. 11. The brain of the dolphin is essentially distinguished from that of man and all the other mammifera, by the absence of ol- factory nerves. The other cerebral nerves compared, with re- gard to size, with the volume of the brain, and the brain of the dolphin being compared with the base of the brain and with the nerves of man, are much larger than in man. This, therefore, affords an additional confirmation of the important proposition of Soemmering, that man possesses the largest brain, in propor- tion to the size of its nerves. The remarkable developement of the brain in the dolphin, a developement which gives it, in this respect, a rank immediately "^98 Of the Changes which Life has experienced on the Globe. after man and the orang-outang, might lead to the inference of a proportional developement of the intellectual faculties ; but, with reference to this subject, we have only the relations'of fish- ermen, who affirm, that the dolphin, like the whales, loves to live in society, that it performs great migrations, has a great at- tachment to its young, and defends them courageously when they are pursued. The figures of the plate accompanying this memoir represent the brain of the dolphin : \st, by its upper surface ; 9^dly^ by its base ; Qdly, the cerebellum and tubercula quadrigemina ; 4^/i/y, the vertical section of the cerebellum made in the middle ; 5thly, the brain, without the upper part of the hemispheres, which are removed to the level of the centrum ovale of Vieussens, and of the lateral ventricles. Of the Changes which Life has experienced on the Globe. X: ossiL remains of the animals which preceded man upon the earth are every day discovered on both continents ; and every day are the documents regarding the history and successive changes of the various races that existed before the present, increased by new facts. This is equally the case with the vegetation which embellished the earth at that remote period, and with which those primitive animals were necessarily in close connection. New animals and vegetables have assumed the place of those that have been destroyed, and whose ancient existence is only revealed to us by their fossil remains. Thus, in the course of the ages that preceded the appearance of man upon the eai'th, its surface has successively changed its aspect, its verdure and its inhabitants ; the seas have nourished other beings, the air has been peopled with other birds. The remains of these various successions of animals and ve- getables attest that they were at first much more uniform. The vegetables of the coal formation, for example, scarcely present any difference, whatever may be the latitude, the longitude, or the elevation at which they are found. Europe, Asia, and the two Americas, alike produced elephants, rhinoceroses, masto- dons, &c. The differences which vegetables and animals exhi- Of the Changes which Life has experienced on the Globe. 299 bit at the present day, according to the various climates or si- tuations in which they occur, liave been gradually established under the predominating influence of a small number of natural causes, and constitute at length the order of distribution which life now presents at the surface of the earth. Originally life extended from one pole to the other, and ani- mated the whole of this surface. The frozen regions of the North, and the snow-clad summits of the Alps^ were covered with the same verdure ; and the forms of the pristine animals and vege- tables presented either extraordinary types of which we have now no example, or species which belonged to families and genera still existing, but in most cases only between the Tropics. As we approach nearer to the present times, we find in all places re- mains more and more resembling those of the plants and animals which now live in the same country. At a later period, the ori- ginal races of animals and vegetables were gradually expelled from the north toward the south, from the summits to the plains, in proportion as the uniform mean temperature of the earth's surface yielded to more powerful causes, which brought about the establishment of climates. These gradual variations in the temperature, the lowering of the general level of the seas, the equally successive and gradual diminution of the energy of vol- canic phenomena arising from the original igneous state of the earth, as well as of the strength and power of atmospheric phe- nomena, and of the tides — ^such were the regular, general, and continued natural causes of the modifications which life has un- dergone, and of almost all the changes that have been produced upon the earth's surface. The results of these first causes, such as the estabhshment of local influences over the temperature of the same climate, the formation of a multitude of particular basins, some containing salt, others fresh water ; the pouring out of these lakes into one another, and into the great basin of the sea ; the partial debacles which thence resulted ; the ravages of the sea on the low parts of the continents at first, and then the formation of vast lagoons in the same places ; lastly, the esta- blishment of the general system of draining and watering, or of the hydrographic reticulation which covers the globe — such were the irregular, and more or less violent and perturbing se- condary causes of the partial vicissitudes experienced by animal 300 Of the Chaviges which Life has experieticed on the Globe, and vegetable life. The beings, which were unable to resist the influence of these various causes were destroyed ancj disappeared from the earth, with the circumstances for which they were cre- ated ; new species appeared with new conditions of existence. But, in examining the series of fossil remains that are found buried in the strata of the globe, there is nowhere perceived a distinct line of demarcation between the different terms of that series, so as to prove that life has been once or oftener totally renewed on the earth. On the contrary, we discover in it a proof of the successive and gradual change which we have point- ed out. Certain primitive types have indeed completely disap- peared, but they are found existing at various epochs, and their remains are blended with those of more modern types ; along with new species of types still existing, we find some of anterior epochs ; certain genera that yet obtain are common to all the terms of the series ; and toward the end of the series, we find the remains of some of our present species along with ancient types and extinct species. In consequence of the establishment of cli- mates, life has almost entirely abandoned the polar countries, and the glaciers have usurped, on the high summits, the place of the verdure of primeval times. Palms, date-trees, cocoas, dra- caenae, pandani, arecae, the great reed, and the arborescent ferns, have forsaken our climates, together with the elephants, tigers, panthers, hippopotami, the gigantic tapirs, the rhinoceroses, palaeotheria, anaplothaeria, mastodons, and other extinct ani- mals, as well as those enormous reptiles whose forms were so ex- traordinary. Sole masters, in those times, of the countries now subjected to the dominion of man, these animals are either en- tirely destroyed, or now live only between the tropics. Man appears to have arrived upon the earth only after its sur- face was adapted to receive him, after the establishment of cli- mates, and when a happy equilibrium among the elements had determined the permanency of the present state of things, or at least had rendered its variations almost imperceptible. Such is a brief view of the changes which life has experienced at the surface of the globe, and of the causes which have pro- duced those changes. Our theory, which is founded on all the facts that have been established, cannot but prevail over the sys- tems hitherto proposed, for it is in harmony with the natural The Disasters of TivoU, 301 laws of order and permanency which rule the universe, and is, moreover, supported by the most accredited physico-mathemati- cal theories ; whereas those systems, founded upon perturbations of cataclysms, which science, facts and human reason equally reject, only increase the number of those imaginary conceptions which have been successively published for several centuries. The above will suffice to shew, that there is no subject whicli, in all points of view, is more worthy to excite the interest and meditations of philosophers, and the investigations of geologists and naturalists. The Disasters of TivolL L HE city of Tivoli, whose origin is lost in the obscurity of remote ages, is situate on the slope of a steep rock, traversed by the Anio, which in this place precipitates itself from a height of more than 100 fefet, and then proceeds to water the plain of Rome, where it soon unites with the Tiber. The rock is formed of a sort of conglomerate, rather friable, and subject to be worn away by the river, which, in the impetuosity of its descent, has scooped out numerous caverns, to which the poets have given the mythological names of the Grottoes of Neptune, the Sy- rens, &c. Every body has seen paintings or engravings of these sportings of nature, which present the most varied appearances, and render the site of Tivoli one of the most curious in the world. The rock on which the city is built has been perforated in various directions by the river, which has formed numerous subterranean caverns, of which the inhabitants have availed themselves for the purpose of putting in motion several forges and manufactories which give a very animated appearance to the country. A little above the town, the Anio had been divid- ed into two branches, by means of a sluice, which threw the greatest mass of its waters to the left, on the side next the town, whence, after passing under the broken bridge, they pro- ceeded to be engulfed in the Grotto of Neptune, immediately beneath the Sibyl's Temple. This branch filled the subterra- nean canals of which we have spoken, and after passing through the Villa Mecene, fell in broad sheets called the Cascatelles. 302 The Disasters of Tivoll Tlie right brancli of the river watered another part of the city, and, after passing under the bridge of St John, formed the Cascade of Bernin, and fell into the Gulf, not far from the Cave of the Syrens, margined with trees and shrubs. During the last inundation of the river, the waters attacked the dike forming the sluice so violently that they broke it in several places, and precipitating themselves with their whole weight on the right side, left dry the left branch, which supplied Tivoli with water, and formed the Cascatelles. Several houses were carried away by this sudden irruption ; and the Church of St Lucia was overthrown, as well as some old walls along the banks of the river. This disaster, the details of which have been related in the public prints, is not the first that has been mentioned in history. In the preceding ages the city of Tivoli had been exposed to similar floods, and had suffered from the ravages of the river, which becomes formidable at this place, by the rapidity of its current, and the violence with which it precipitates itself over the rocks. The most distinguished architects and engineers were successively employed in repairing these ravages ; and it was after an irruption which took place about the end of the 17th century, that the celebrated Chevalier Bernin formed the cascade which bears his name. As soon as the irruption of the 16th November last was known at Rome, the Pope hastened to send to the place engi- neers, who were directed to examine the state of things, prevent any further damage, and repair the injuries sustained, as quickly as possible. Their first care was to prop up the buildings that were already undermined, and that threatened to destroy in their fall a great number of other houses. The spectacle which Tivoli presented was frightful. Piles were hastily driven, which were supported with stones and fascines^ to guard the right bank, which was already damaged, preserve it from total destruction, and get the river to return to its channel. They had next to endeavour to force a part of the water into the right branch, which, in consequence of this event, was left dry, as we have already said, and left unemployed the numerous manufac- tories and mills which it formerly moved. Ancient traditions had given rise to a conjecture, that, in the time of the Romans, The Disasters of^TtvolL 303 there existed a subterranean canal which conducted the waters in that direction, but of which all traces had been lost for many centuries. After several days of assiduous research, this canal was at length discovered. The gravel that obstructed it was removed, the water was immediately introduced, and the nume- rous manufactories, which had ceased for a month, were again put into activity. The inhabitants of Tivoli, in the joy caused by the discovery of this canal, sent a deputation to Rome, head- ed by their worthy bishop, to carry to the Pope Ihe homage of their gratitude, and request him to allow the canal to be named after Leo the Xllth, which was granted them. At the moment when we write, the labours are continued with the greatest activity, and the engineers will soon have to decide in what manner the dike of the sluice is to be repaired, and what direction the bed of the river will receive in that part to prevent the repetition of similar accidents. The environs of Tivoli resound with redoubled blows of the hammer, the roads are crowded with carts and beasts of burden carrying materials for the new works. The stranger who visits Tivoli from curio- sity, as well as the citizen who views these works so interesting to himself, load with praises and blessings the sovereign who repairs so many disasters^ and also bestow upon his minister the praises which the zeal and foresight displayed by him on this occasion merit. Essay on the Domestication of MammiferotLS Animals, with some introductory considerations on the various states in which we may study their actions. By M. Frederick CuviER. X HE strangest prejudices have been formed regarding the state of animals in captivity, and the most singular judgment passed upon the works to which their actions have given rise. To prevent, as much as possible, the application of similar ideas to the present essay, on the domestication of mammifera, I shall commence with some considerations calculated to rectify these ideas, and to afford juster notions than appear to have been en- tertained regarding animals, and the various states jn which we 304 M. F. Cuvier on the Domestication may study their habits. I am the more induced to follow this plan, as, in this respect, domestic animals have not been more correctly judged of than captive, and because, from the errors into which people have fallen, it would be impossible to receive without prejudice a work on the actions of animals, considered in a general and philosophic point of view. It is maintained that animals can only be studied with ad- vantage when they enjoy a perfect independence. It is indeed admitted that those which are domesticated may furnish some useful knowledge ; that their study is calculated to direct us to the means of subjugating them, of rearing and improving them with relation to our wants ; that it apprizes us of the services which we have received from them, and of those which they are still capable of rendering us ; and that by thus studying them, we are even enabled to discover the designs which Provi- dence had in view in placing them upon the earth. But it is said, what could animals reduced to slavery teach us ? Under the weight of the restraint in v/hich we are obliged to hold them, we obtain from them actions that are only artificial and conse- quently little calculated to unveil their nature. It would be quite otherwise were they in a state of liberty. Then their na- ture would manifest itself, and the more so the less constraint they experienced from the circumstances in which they were placed ; for as the most complete slavery is the situation the least favourable to the exercise of the faculties, the most entire independence, or the state of nature, is the best adapted for their exercise and developement. " The wild animal,"" says Buf- fon, (T. iv. p. 169.), " obeying only nature, knows no other laws than those of necessity and liberty."" This in fact is the opinion that is held with regard to the comparative advantage of studying animals in the three states in which they present themselves to our observations, judging at least from the little that has been published on the subject. Domesticated animals, and those in captivity only make known to us a state contrary to nature, the consequences of which, in respect to the former, relate exclusively to man ; and in respect to the latter, to the means which have been employed to make them act and be observed. It is only animals in a state of free- dom that shew themselves to us such as they are, such as they i)f Mammiferous Animals. 305 have been made, with the full possession of all their faculties ; they alone allow us to trace without error the true origin of all their determinations. The origin of these ideas is easily discovered. They proceed from the same source as most of the errors which have been en- tertained with respect to the nature of animals ; the ideas to which the study of man gave rise were applied to these beings. But if slavery, if absolute submission to the will of another is the situation the most repugnant to the moral and intellectual developement of the human species, one essential character of which consists in liberty, what reason would there be for animals, which are deprived of all liberty, properly so called, experiencing the same effects from slavery as ourselves ? And further, the errors into which men have fallen regarding this imaginary state of nature, the only state, it has been said, in which man can shew himself in all his grandeur, and in all his beauty, must have influenced the ideas which have been formed of animals, the wildest state of which has always been consider- ed as the true state of nature, and must have still more strong- ly convinced us of the hopeless attempt to acquire a knowledge of them in any other than their state of perfect independence. Most of these errors might have been avoided by the consi- deration that, in establishing, as a principle, that these animals unveil their nature to us only in a state of absolute independ- ence, and in yet admitting that they may act in a state of do- mestication, and even of slavery, was the same thing as saying that they have the faculty of not acting according to their na- ture ; that they are susceptible of obeying desires which have not been imparted to them ; that they manifest other dispositions than those which they have received ; in a word, that they may be something else than what they ought to be in virtue of the laws of the universe, and that man may have the power of changing their nature, and of destroying the laws of creation. To examine therefore this idea, and trace its consequences, is all that is necessary to shew at least its weakness ; and some further considerations will serve to refute any arguments that might still be urged in its support. Were liberty necessary in order to animals manifesting themselves to us such as they originally came from the hands JULY — SEPTEMBER 1827- U S06 M. Cuvier on the Domestication of nature, it would be as impossible for the wild as for the do- mesticated or captive animals to do so, for the former no more enjoy that imaginary state of absolute independence which is called the state of nature, than the latter. All of them lie un- der the unavoidable influence'of the circumstances in the midst of which they are placed. These conditions may change, but the nature of animals does not change. If some of them act dif- ferently from others, they produce different effects, but these ef- fects have always relation to the faculties of the being which manifests them. A wild animal, amidst the forests of a desert region, will not have any very close resemblance to what it would be in the midst of a very populous country. It will be still more widely different, if reduced to captivity, or converted into a domestic animal, and will lose altogether its original cha- racter. But whatever differences these various states may pre- sent, this animal will always be the same ; it is only in its own nature that the means will be met with which are calculated to put it in harmony with this diversity of situations, and the facts which it presents to us in the one situation, if they are numer- ous and diversified, may afford us the means of deducing its fa- culties as accurately as we should deduce them from facts pre- sented by the others. All consists in knowing how to observe and estimate the circumstances under which the facts manifest themselves. But let us see what we should learn from animals in the highest state of independence which we can imagine, that is to say, in that situation which is regarded as a perfect state of nature ; and that the independence may be more complete, let us take one of those animals whose wants may be the most easily satisfied, a ruminating animal, and place it in the midst of those rich savannas of South America, from which we shall even remove the animals which might, in the smallest degree, dis- turb its tranquillity. So long as its wants are satisfied, it will remain at rest in the couch which it has chosen for itself, im- mersed in a state of sleep so much the more profound the greater its security is. Plunger awakens it, it will find within the compass of a few steps wherewith to satisfy itself; if it be thirst, the neighbouring brook will quench it ; and there will be no change in this mode of existence, until the moment when the of Mammiferous Animals. 307 torments of love will come to disturb it. Then impelled by a blind fury, it seeks out a female, calls her with loud cries, fol- lows her traces, overtakes her, kills her if she resists and is un- able to flee, satisfies his wants if she participates in them, and if he remains victorious over the rivals which he may have to en- counter. Presently his strength fails, his ardour is blunted- and he returns to his retreat to seek a repose which has become necessary to him, and which the passion of love, the only one which his situation puts him in the way of experiencing, will periodically come to disturb once every year. If, instead of a herbivorous, we take a carnivorous animal, what shall we have to add to the uniform picture which we have traced ? Instead of pasturing, this new animal will lie in wait for its prey, or pursue it, which will subject it to pains and ef- forts that would have been unnecessary had it fed upon vege- table substances. More rest will then perhaps be necessary for it ; but the nutritive qualities of flesh rendering the recurrence of hunger less frequent, will allow him to indulge in it. Thus all the diff*erence which this animal presents to us, compared with the former is, that the searching for its food may require of it more or less cunning, prudence and strength, whether it has only to provide for its own wants, or moreover to supply those of its young. What is the conclusion to be drawn from the life of such ani- mals ? Nothing more than from the life of animals subjected to the closest captivity. But let us drag both from the nearly complete state of inactivity in which we have supposed them to be living ; let us place them, as they are naturally placed upon the earth, under the most complicated circumstances ; let us vary their situation, as it varies amid the fortuitous occurrences which are continually taking place here below ; let us multiply their wants, and even increase i\\e dangers to which they are exposed ; let new relations suggest, as it were new desires and new resources ; and then we shall see another picture unfold it- self before us. It would still, however, be erroneous to sup- pose, that the state in which animals naturally occur upon the earth, however complicated it may be, is the best adapted to forward their developement. It is not the ordinary conditions of animal existence, those which first present themselves in all u 2 808 M. Cuvier on the Dcmiestication the circumstances where human industry does not interfere, that are the best calculated to make animals act in a manner favour- able to the unfolding of their faculties. The equilibrium which is constantly tending to establish itself among all the powers which simultaneously act here below, gives to the most energe- tic a preponderance over the more feeble, which never leaves the latter the liberty of acting ; and it is only by mastering these predominating powers, by attenuating them, that we come to discover the others, that we render them sensible, and vary their effects. In their natural independence, that is to say, such as it may be in all the circumstances in which it naturally occurs, animals are under the yoke of these predominating powers : and they may then inform us of the place which they occupy among the other beings submitted to the same powers, of the relations in which they stand to them, and of the influence which they ex- ercise in the general economy ; but, in this state, they can only, in common, afford us very confined and always doubtful ideas, regarding their general faculties ; for, in this case, it does not depend upon us to submit them to experiment, in order to confirm our conjectures. Let us ask in fact, what is the know- ledge that has been obtained from the observation of animals in a state of liberty alone ? The answer will be easy and impos- ing ; it is to the greatest of naturalists that we are indebted for it; to Buffon, who tells us what every body has repeated after him, " that to fierceness, courage and strength, the lion joins nobility, clemency and magnanimity ; that he often forgets he is king, that is to say the strongest of all animals ; that, walk- ing with a tranquil pace, he never attacks man, unless when pro- voked; that he does not accelerate his steps, or run, or pursue, un- less when pressed by hunger ; that the tiger, on the other hand, while meanly ferocious, cri^el without justice, that is to say, without necessity, seems always thirsty of blood, although satiated with flesh ; that his fury has no other interval than that of the time necessary for preparing new ambushes ; that he seizes and tears a new prey with the same rage which he has just exercised,, but not assuaged, in devouring the first,'' &c. Now these differences between the lion and the tiger, can only be relative to the circumstances in which the individuals so of Mammlferous Anivials. 309 described had lived, for these animals have nearly the same dis- position. Placed in the. same circumstances, they have constant- ly presented the same phenomena to us ; they have shewn us that the one is as easily tamed as the other : that they become equally attached to their keepers, experience the same feelings for the benefits which they receive, and that their hatred or their rage is provoked by the same causes ; that their sports are similar, as well as the manifestations of their fears or de- sires ; that they seize their prey with the same avidity, and defend it with the same fury ; in a word, that their natural dis- positions are absolutely the same. What has not been said of the hyena ? Its very name has become the emblem of the most sanguinary cruelty ; and, in imitation of BufFon, the most saga- cious naturalists have adopted the prejudice which places this animal in the first rank of ferocity. The truth is, that the hy- ena, treated with kindness, comes to the feet of its master, hke a dog, soliciting caresses and food ; and we have several times seen it doing so. I might multiply examples of this kind to in- finity, and hence prove, on the one hand, that, in a state of in- dependence, animals exist under circumstances so concealed, that we can only very rarely appreciate the influence which they exercise over them ; and, on the other, that captivity, by afford- ing us the means of withdrawing animals from the powers which, in the contrary state, rule over or restrain them, in order to subject them to the other powers, permits us to make a more accurate and more complete examination of them ; and, in this respect, we see that all the productions of nature are subjected to the same rules. What should we have known in natural phi- losophy, had we simply observed the phenomena which appear of themselves in the actual state of the world, and not acted upon them by instruments adapted for modifying them ; and does it ever come into the mind of any onfe that the results which the chemist obtains by artificial means are not natural, and are in- capable of revealing to him the laws which form the object of his researches ? But to shew the advantage which the study of animals may derive from their captivity, examples more import- ant than those which we have yet adduced are necessary. It is undoubtedly because we have constantly been in the ha- bit of observing wild animals in a state of liberty alone, and be- 310 M. Cuvier on the Domestication cause we have confined ourselves to describing the actions which then accidentally presented themselves, that this important branch of natural history has hitherto only been enriched by isolated facts, which have often appeared to be without mutual accordance, because no bond united them, and because no prin- ciple directed the observer in his inquiries ; for no principle could be deduced from these hypotheses, which originated in the desire of explaining the cause of the actions of brutes, in order to harmonise them with the idea which was formed of the cause of the actions of man. These hypotheses, not having any foundation in nature, could only mislead those who rested upon them. Pure empiricism would have been preferable. Unfor- tunately the narrow circle in which empiricism was confined, became an almost insurmountable obstacle to the further pro- gress of the science ; on the contrary, no sooner were animals in a state of captivity subjected to rational observation, than the branch of natural history which investigates the actions of ani- mals and their causes, rose to the rank of a science by the gene- ral truths with which it was enriched. For a long time it was admitted, that the moral perfection of man depended upon the perfection of his organs ; and if this er- ror at length yielded to evidence, it was yet cherished in full force with reference to animals. Those who had the most deli- cate senses, the most pliant limbs, and most favourable to mo- tion, were necessarily the most intelligent ; and the monkeys and carnivora seemed to confirm this rule. But the possession of several seals, that is to say mammifera whose limbs are con- verted into fins, which are destitute of external ears, whose eyes, formed for a liquid medium, can only see inlperfectly in the air, whose nostrils open only when the animal inspires, and whose body clothed with a thick layer of fat has, so to speak, no sense of touch excepting at the points where the moustaches are affixed, has demonstrated, by means of actions artificially provoked, that the extent of intellect is no more proportional to the perfection of the organs in animals than in man. And this truth has given rise to the idea that the most accurate know- ledge of the organic parts of animals can afford no satisfactory information regarding their nature and their relations to other beings, if we are ignorant of the cause which animates and of Mammtferous Animals. 311 guides them, the power which acts upon their organs, and which directs and determines their motions. All the analogies founded upon the observation of animals in a state of liberty made it in general be regarded as a certain fact, that the intelligence of each animal in its development fol- lowed the progression which we observe in the development of the human intellect. Thus the animal, like man, was born with intellectual faculties, of which the simple germ could only at first be perceived ; in its youth these faculties shewed more vi- vacity than strength, and they only arrived at their perfection when they were matured by age. The study of animals in a state of captivity has had the effect of destroying this prejudice ; for it was necessary to compare them with themselves at differ- ent periods of their life, and consequently to follow their de- velopment, in order to perceive that the young are incomparably more intelligent than those which have attained the age of matu- rity. And all animals were not calculated for this sort of in- quiry ; we could not reckon upon the species modified by domes- tication ; those whose intellect is limited gave no sensible result ; and the carnivora, constantly obliged to exercise all their facul- ties, were in the same condition. It was necessary to have re- course to the species which with respect to intellect have been more favoured, and yet whose existence does not absolutely de- pend upon the use which they make of it ; in a word, to the monkeys, which live on fruits, a species of food always abound- ing in the countries they inhabit, and which can never be brought in a nearer relation to us than the state of captivity. But this observation is not confined to the establishing of a new and important fact ; it has, moreover, thrown light upon a ques- tion of high interest. In observing that in their early youth the intellectual faculties with which animals have been endowed have acquired all the extent and activity of which they are ca- pable, and that they begin to diminish as soon as the age of vi- gour arrives, we have acquired a new demonstration of the fun- damental difference which distinguishes them from man. Pre- vious to this we could only, like several observers, have found this difference through the analysis of their fortuitous actions, in which the reflective faculty never manifests itself; now it arises from the very phenomenon which we have been pointing 31S M. Cuvier on the Domesticat'ioii out. In fact this phenomenon would never have been observed, if the animals which have presented it to us could have nourish- ed and perfected, in the age in which they naturally diminish in strength, the faculties which they have received, and which we possess in common with them, by means of that faculty which belongs to us exclusively, and permits us to prolong, as it were indefinitely, the exercise of the former ; if, in a word, for their preservation, nature in place of strength had bestowed on them reflection. It is not merely truths which may be deduced from contin- gent and fortuitous actions that we obtain from animals kept in a state of captivity ; these animals also afford us information re- specting those which result from their necessary actions, from ac- tions which seem to be most invariably determined by their in- timate nature, by the destination which they have received as to the point of the earth upon which they have been cast ; from actions, in a word, which their instinct produces ; and instinct exists without alteration only in animals of the wild race. So long as beavers had only been observed in their native li- berty, it was seen that those which live collected into bands in wild countries construct habitations, and that the solitary indi- viduals, such as are sometimes met with, especially in populous countries, made their retreat in the natural excavations of the banks of lakes and rivers ; and it was concluded from these facts, *' that these animals do not labour and build by a physi- cal power or necessity, like ants and bees ; that they do it by choice, and that their industry ceases whenever the presence of man has diffused its terror among them." It is BufFon who tells us so, and it is he whom I quote in preference ; for of all the authors who have written upon the nature of animals, he is incontestibly the one who formed the most elevated and the just- est ideas regarding it. If ho^^ever that great naturalist had been disposed to observe some of these solitary beavers, if he had formed the idea of placing them in suitable circumstances, and of giving them the materials which they commonly employ in building, earth, wood, stone, he would have seen that their solitude, and the presence of man, did not make them intermit their labours, that they still took care to build ; and instead of seeing in the houses and dams of beavers united into bodies, of Mamm'iferous Animals. 313 " the result of common projects founded upon rational agree- ments, of natural talents perfected by repose," he would only have seen the fruits of an industry entirely mechanical, the re- sults of a purely instinctive want. In fact, several sohtary bea- vers on the banks of the Iser, the Rhone, and the Danube, have shewn to us, in the numerous experiments to which we have sub- jected them, that they are constantly impelled to build, without however there resulting any other advantage to them than that of satisfying a blind necessity, which they are somehow forced to obey. One of the errors which the exclusive observation of wild ani- mals gave rise to and kept up, and the influence of which has been so manifestly exercised over all the systems which have had for their object the natural state of man, and the effect of different kinds of food upon his moral development, consists in the belief that the herbivora have a milder, more tractable, and more affectionate character, than the carnivora. The gazelle became the emblem of gentleness as well as of beauty ; and it was nearly the same with the hind and several other animals ha- ving large eyes, and a timid and light gait ; while the tiger, the panther, the hyena, the wolf, had only a brutal ferocity, and manifested only feelings of hatred and cruelty. Closer obser- vation, more circumstantial, and more calculated to shew us these animals such as they are, obliges us completely to reverse the application of these ideas, and to transfer to the one set of animals what we had apphed to the other. In fact, all the adult ruminantia, the males especially, are rude untractable animals, which no good treatment softens, nor any benefit renders captive. Although they recognise him who feeds them, they are still far from being attached to him, and in administering to their wants he must be always on his guard against them ; for the moment he ceases to intimidate them, they are liable to strike him. It would seem as if a secret feeling induced them to shun or to treat as an enemy every species of animal foreign to their own. We have seen that the case is very different, even with the animals which feed the most exclusively upon flesh. The reason is, that the one set of animals have a coarse and limited intellect, while the others are not less remarkable for the extent than for the delicacy and activity of theirs. So true it is, that even 814 M. Cuvier on the Domesticatimi in animals the development of this faculty is more favourable than hurtful to the good feelings or benevolent affections. I have thus in some measure shewn that if animals in a state of liberty are calculated to instruct us with regard to the part which they act upon the earth, they are little fitted to unveil the general causes of their actions, namely, the faculties of their intellect, and that it is only by means of captive animals that we shall obtain this knowledge. Shall we conclude from this that the study of animals, such as they exist in their natural state, ought to be renounced, that all inquiry into the economy of this world, in which they occupy so conspicuous a part, should be abandoned ? For it is too evident that the difficulty of studying animals in a state of liberty is so great, that it is almost equiva- lent to an absolute impossibility. Whenever they can obey their feelings they distrust whatever they do not know, and fly from or attack whatever assails them. Besides how should we reach for the purpose of observing them those which inhabit the wild or remote countries which we scarcely know ? And, moreover, the mere pursuit of an animal entirely changes its natural con- ditions, and it can only then be viewed as an animal constrain- ed by violence, and placed under circumstances quite as unna- tural as those to which animals in a state of captivity are re- duced. These difficulties would, without doubt, be insurmountable ; problems whose solution is so remote are more calculated to re- strain the efforts than to sustain the zeal of inquirers. Fortu- nately it is not necessary to surmount them in order to attain the object in the way of which, as a barrier, they seem placed ; and the knowledge of this world, in all that relates to animals, is neither founded upon purely rational views, nor upon chime- rical hopes. If it is impossible to arrive at it directly, without almost insurmountable obstacles, we can at least be led to it in an indirect manner, and the path which we now open up is as- suredly the shortest and most certain. In fact if the existence, and the various circumstances of an animal on any given point of the earth, are the consequence of the fiiculties and propensities with which it is endowed, and of the fixed or varying conditions which are peculiar to this point of Mammiferous Animals. - 315 of the globe, that is to say, the consequence of power by means of which this animal struggles with and sustains itself against those which are affixed to it, from the moment that we know the general faculties of its species and its dispositions, we can determine, even in advance, its individual actions in all the si- tuations in which it may be placed ; and from this time it will no longer be required, in order to determine the mode of exist- ence of a particular species in a given country, to discover the individuals of that species, to follow them through all the de- tails of their existence, to hunt them for the purpose of getting hold of them ; it will be sufficient to appreciate correctly the circumstances in which they are placed, which is a much easier matter, and much less subject to error. It is from chance that all sciences proceed ; and zoology, properly so called, will have no true foundation until it proceeds like them. Thus, on whatever side we view the question we constantly arrive at this truth, — that the methodical examination of animals in captivity, is one of the surest means which have been given us of studying them, and of knowing them as they should be known by the naturalist. And now that it has been estabhshed as a firm principle that animals never conduct themselves otherwise than in conformity with their situation and faculties, that is to say, with the powers which act within them, and those which act without them, I may enter upon my subject, and consider the source and effiscts of domestication, without any fear that the facts which I may have to relate, or the inferences which I shall draw from them, will be rejected under the pretext of their not being natural. The absolute submission which we require of animals, and the sort of tyranny with which we govern them, have led to the idea that they obey us as absolute slaves, that the superiority which we have over them is sufficient to constrain them to renounce their natural love of independence, to bend them to our plea- sure, to satisfy such of our wants as their organisation, their intellect, or their instinct permit us to employ them for. We conceive, however, that if the dog has become so good a hunter through our care, it is because he was so naturally, and that we have only aided the development of one of his original quali- ties ; and we find that it is much the same with all the various 316 M. Cuvier on the Domesticat'ion qualities which we seek for in our domestic animals. But as to domestication itself, the submission under which we bring these animals, it is to ourselves alone that we attribute it ; we are the exclusive cause of it ; we have commanded their obedience, as we have constrained them to live in captivity. The cause of our error is, that judging from simple appearances, we have con- founded two ideas essentially distinct, domestication and slave- ry ; we have seen no difference between the submission of the animal and that of man ; and from the sacrifice which the slave of our own species is forced to make to us, we have thought that the domesticated animal makes a similar sacrifice. Yet these two situations have nothing in common ; the distance between the domesticated animal and the enslaved man is infinite ; it is the same as that which separates the simple will from liberty. The animal in domesticity, as well as the animal living in the woods, makes use of its faculties within limits marked out by its situation. As it is never solicited to act but by external causes, and by its instincts, from the moment that its will con- forms itself to the necessities which surround it, it sacrifices no- thing of it ; for the will consists in the faculty of acting sponta- neously according to all the wants which one feels and by which he is naturally solicited, but which he does not know. Such an animal, therefore, is not essentially in a different situa- tion from that in which it would be if left to itself; it lives in society without constraint on the part of man, because without doubt it was a social animal, and it has a chief to whose will it conforms itself within certain limits, because, probably, it had a chief, and because this will is the strongest of the cir- cumstances which act upon it. There is nothing in this that is not conformable to its propensities ; it is satisfying its wants ; we do not see that it experiences others ; and this is the very state in which it would be, it in the most perfect liberty ; only its chief is a master who has an immense power over it, and who often abuses that power ; but frequently also this master em- ploys his power to develope the natural qualities of the animal, and in this respect the animal is truly improved ; it has acqui- red a perfection which it could never have attained in another state, under other influences. What a difference between this animal and the enslaved man, who is not only a social being, of Mammiferous Animals. 317 who has not onlj the faculty of willing, but who is moreover a free being ; who is not confined to conform himself spontane- ously to his situation by the blind influence which it exercises over him, but who can know it, judge of it, appreciate its con- sequences, and feel its restraints. And yet this liberty which may make him contemplate his situation, shews him all that is disagreeable in it ; he sees that he is chained, that he can make no use of his liberty, that he must act without it, that he con- sequently descends beneath himself, that he is degraded to the level of the brute, that he has even fallen beneath that level ; for the animal satisfying all the wants which it experiences, is necessarily in harmony with nature, with the circumstances in the midst of which he is placed, while the man who does not sa- tisfy his, who is forced to renounce the most important of all, is far from being in this state ; he is in the moral world what a mu- tilated being or a monster is in the physical. Without doubt the liberty of man, which essentially re- sides in his imagination, cannot be restrained, and in this sense the man who is reduced to the necessity of performing the office of a beast of burden is yet but a slave. But thought which is not exercised soon ceases to be active ; and why should the thought of a man be exercised who cannot conform his ac- tions to it ? And if, notwithstanding his abject state, it pre- serves some degree of activity, on what will it exercise itself? The character and manners of the slaves of all ages may an- swer. It would be impossible for us to ascend to the source of the fundamental differences which exist between the domesticated animal and the enslaved man, were not the difference of the re- sources to which we are obliged to have recourse for subjecting animals, and for subjecting man, sufficient to make us presume that beings which are only to be mastered by entirely opposite means no more resemble each other after than before submis- sion, and that slavery and domesticity are widely different. In fact man can only be reduced to slavery and kept in it by force, for it is part of the character of liberty to obey itself only. The will, on the contrary, existing only in the wants and ma- nifesting itself only by them, the animal can only be reduced to domesticity by seduction, that is to say, only by acting upon 318 M. Cuvier ori the Domestication of Animals. its wants, whether for the purpose of satisfying or of weakening them. Hence the principle that violence would be ineffectual for dis- posing a wild animal to obedience. Not being naturally inclin- ed to approach us who are not of its species, it would flee from us, if it were free, at the first feeling of fear which we should make it experience, or it would hold us in aversion if it were captive. The only method by which we can attract it and render it familiar is by inspiring it with confidence, and this confidence can only be inspired by benefits. It is therefore by such benefits that all attempts to reduce an animal to a state of domestication ought to commence. Good treatment especially contributes to develope the instinct of sociability, and to diminish proportionally all the propensi- ties that might act in opposition to it ; and for this reason, no subjection in animals is ever so complete as that which is ob- tained by operating an amelioration of their condition. (To be continned.) Experiments zvith Bottles swik into the Sea^ made duri7ig a Voyage from Nexv South Wales. By Mr James Dunlop. In a letter to Professor Jameson. Sir, xIaving on my voyage (per ship Portland) from New South Wales made the following experiments with bottles, &c. sunk into the sea, if you find a description of them to be of service, they ai'e at your disposal. Experiment 1. — April 9, in Lat. 24° South, and Long. 43° l(y West, the ship becalmed off* Rio de Janeiro, the boat was lowered down, and rowed a short distance from the ship ; the deep-sea lead was let down 80 fathoms with the following ex- periments attached to it, consisting of a common porter bottle well corked and pitched over, and secured by a covering of new canvas, which was also covered with a thick coat of pitch ; also a tin canister with holes pierced in its bottom, and open at the top, in which were placed four small thermometer tubes filled Mr Dunlop's Experiments with Bottles sunk in the Sea. 319 with mercury, all of which would burst with a less temperature than 100^ of Fahrenheit ; also five small glass globes hermeti- cally sealed by the blowpipe, two of which were vacuum (or as nearly so as I could make them), other two were suffered to cool, previous to their being sealed, and the fifth contained a small globule of mercury to enable me to detect any damp, as an experiment on the porosity of glass ; three glass phials, well corked, and firmly secured by leather coverings, tied round the necks, and further secured by a coating of sealing-wax, were also put into the canister. After letting them remain ten mi- nutes at the depth of 80 fathoms, the line was hauled in, and the experiments examined. The porter bottle was nearly filled with water, and the cork floating inside ; the covering of canvas and pitch was pressed concave into the mouth of the bottle, but the pitch was not cracked or broken. The four thermometers, and also the small glass globes came up unbroken. I examined the one which contained the small globule of mercury, and it gave not the slightest indications of damp having penetrated through the glass. The three phials came up full of water : of one of them the cork was forced in, and swimming in the wa- ter ; in another, the cork was forced about half an inch into the neck ; and the cork of the third was not apparently affected or displaced in the least degree, although the phial was full of wa- ter, and also several pieces of the sealing-wax lying in the bot- tom, which by no means could have got into the bottle, but by the cork being driven in. The wax on the top of each was broken or cracked in regular concentric rings from the centre, and the coverings of leather burst, as well that in which the cork was not displaced as in the others. Indeed the hole in the leather which covers the phial with the remaining cork is larger than in the others, in which the cork is driven in ; which in all probability may be accounted for, by considering this cork to have been tighter fitted into the phial, and requiring a greater force to displace it : there would be a greater rush of the water into the phial, and the cork forced again into its neck. I think it more than probable this has been the case, otherwise the bits of sealing-wax could not have got into the phial had the cork retained its situation ; neither could we account for the bursting of the leather and wax which fastened down the cork. 320 Mr Dunlop's Eocperiments xvith Bottles sunk in the Sea, In preparing for the second set of experiments, I attempt- ed to guard against the possibility of the corks being forced in, or the pressure of the circumincumbent column at all affect- ing the corks. I prepared two (four or five ounce) phials : the corks were dipped in strong gum dissolved in ether, and thrust into the mouth of the phials ; they were allowed to remain in this state for several days to dry. The corks were then cut close to the mouth, and covered with several thick coats of var- nish, and afterwards covered with leather firmly tied round the neck, which was also covered or soaked in varnish, and suf- fered to dry ; and for farther security, the heads and necks of the phials were immersed in brass caps, filled with melted seal- ing-wax, to prevent the possibility of pressure upon the corks. I also prepared a small phial by simply thrusting in the cork as tight as possible, and cutting it close to the mouth, and af- terwards covering the mouth and neck of the phial one-fourth of an inch thick with black sealing-wax. On the 15th May, in Lat. 5° North, and Long. ^Q" West (the ship becalmed), these three phials were wrapped in old canvas, and, together with the thermometers and glass globes used in the former experi- ments, were all put into a tin case, open at the top, and fasten- ed to the line just above the lead : a porter bottle, fitted up as formerly, was also attached to the line. The boat was rowed a short distance from the ship, and the lead let down 180 fathoms, and allowed to remain about eight or ten minutes at that depth before we commenced hauling in the line. On examining the ex- periments, the two (five ounce) phials, which were secured by the brass caps, were broken or crushed to powder, with the excep- tion of the thick part of the bottom, and the neck which was protected by the brass caps. The other small phial, which was much stronger in the glass, and only secured by the cork, covered one-fourth of an inch thick with sealing-wax, was not broken or injured in the least, though a very minute quantity of water had found its way into the phial, probably through the wax and cork, and, I have no doubt, had the phial been allowed to remain sufficient time at that depth, that it would have filled with water, probably without breaking the wax, or forcing in the cork. Neither the thermometers nor the small glass globes were broken, nor could I perceive the slightest appearance of 2 Mr Dunlop's Experiments with Bottles sunk in the Sea. 321 damp in the small globe which contained the globule of mer- cury, to indicate porosity in the glass. The porter bottle came up full of water as formerly. The porter bottle in this, and also in the other experiment, was prepared by Captain Mood, commander of the Portland, who assisted and gave every facility for making experiments, when the weather and circumstances would permit. My object with the thermometer, was to ascertain whether an increase of temperature took place at a considerable depth in the ocean ; and not being provided with a self-registering thermo- meter, the only resource I had was to make several about three inches long, and by immersing the bulbs in water heated to a known temperature, the superfluous mercury was forced out, and the moment it began to subside the tube was sealed by the blowpipe. The one which indicated the lowest temperature, required about 73° or 74° of Fahrenheit to raise the mercury to the top of the stem ; but experiment proved the unsatisfactory results I might have expected, as it required a temperature above 80° to burst the slender bulb. The experiments of Cap- tain Sabine and others prove the temperature of the ocean to decrease at considerable depths below the surface. I think it can hardly fail to convince any one who makes the experiment of sinking bottles in the sea, and assists personally at the hauling in of the line, that the great force necessary to haul it in must be occasioned by the pressure of the superin- cumbent column of water. And I have no doubt that the same experiment may be performed, and powerful effects produced, on a bottle well corked and secured being placed in a cast-iron cylinder filled with weter, and xhejbrce applied hy a hydrostatic press, on the top of a solid piston (which must be well fitted in- to a smaller cylinder fixed on the top of the larger one), the piston pressing upon the surface of the water in the small cylin- der. And many interesting experiments might be performed in the lecture-room, by substituting a very strong cylinder of glass, having its ends ground parallel, and fitted into brass caps ac- curately ground to fit the outside of the ends of the cylinders, and the bottom of the caps lined with leather, to prevent the JULY SEPTEMBER 18^7- X 322 M. Karsten's Observations and Experiments pressure of the screws, necessary to connect the caps and keep them water-tight, from chipping the glass. To one of the brass caps must be fixed a well bored cylinder, for the solid piston to slide in, &c. Sea-water might be used in the cylinder, with a ther- mometer to show what capacity water may have to retain its ca- loric when under a high pressure. Such experiments would be interesting to compare with experiments which have been made on the temperature of the sea at great depths ; and also the spe- cific gravity of the water in the cyhnder ascertained before and after the experiment, which would probably throw light on the subject of increased specific gravity of water drawn from great depths, and also whether the effects of pressure on water are permanent, and owing to the imperfect elasticity of water. I am, &c. James Dunlop. Dalry, ^Bth Aug. 1827. Observations and Experiments on the different hinds of Coal. By M. Karsten. Continued from p. 71. X HIS general manner in which coals comport themselves may, however, be considerably modified by other circumstances. When intermixed with mineral charcoal, as is often the case, they are rendered very difficult to kindle. In good coals, whether with intumesced or conglutinated coke, the obstacle which re- sults from the mixture of a great quantity of mineral charcoal, becomes less sensible ; but a coal with pulverulent coke, may thus become altogether useless, because its mass becomes so compact, that it arrests the passage of the air. Another obstacle is produced by the quantity of earths which occurs mixed with the mass of the combustible. A coal which leaves much ashes, developes but a slow and feeble heat, because the ashes oppose the access of the air. The same obstacle pre- sents itself in the case in which the body of the combustible it- self leaves little ashes, but where the stratum is, as it were, in- terlarded with clay or slate. If it be the body of the coal itself that is much divided by numerous fissures or partitions, this circumstance may render a coal with pulverulent coke altogether on the different Mnds of Coal, 323 useless, for such a coal in burning falls into small pieces, which, far from agglutinating themselves together so as to form a loose and light mass, on the contrary, apply themselves so closely to one another, that the affluent air finds no passage through them. Is the object in view the production of coke ? Then several circumstances are to be considered, which may make the coke of one coal be preferred to that of another, although each may be a perfectly pure charcoal ; that is to say, although the purity of both may only be altered by a small quantity of ashes. In the first place, regard ought to be had to the more or less loose or light state in which the cokes, obtained from different coals, present themselves. Matters, however, go on differently here, from what they do in those wood-charcoals which are obtained from the hardest or the softest woods, or in those charcoals which are produced from straw or other vegetable fibres, — from substances, in short, which, in their original and undisturbed state, were very loose and very light. In coals, the loose and light aspect of the charcoal is occasioned by the manner in which the coals comport themselves, whether they be coals with intu- mesced, or coals with conglutinated, coke ; whereas, in unaltered fibres of wood, this aspect is^ only the effect of the original den- sity of the fibres. Thus, a comparison between the different degrees of lightness of the cokes obtained from coals, and those of the charcoals pro- cured from still unaltered vegetable fibres, could only take place with regard to coals with pulverulent coke. But the intumesced cokes are in reality a charcoal in a state of partial fusion, which the almost silvery colour of several of these cokes already indi- cates. The large proportion of hydrogen which coals with in- tumesced coke contain, and, at the same time, the small propor- tion which the oxygen bears to the hydrogen, produce the follow- ing effect : the coal, at the moment when the decomposition of that combustible is effected, passes into a state of partial fusion. There results from this, that the mass, which is softened through- out, and of which a part has become adhesive, is often intumesced by the vapours and gases which are developed. It then extends in all directions, and frequently swells out like an agglomeration of vesicles. x2 334 M. Karsten's Observations and Experiments The coals in which the proportion of oxygen is much superior to that of the hydrogen, act differently : they do not soften either before or during their decomposition. What did not ad- here together previous to carbonization, because it was inter- mixed with foreign matters, or had only thin walls interposed between its parts, still remains in the same state after carboniza- tion ; and each isolated fragment, which in such a coal does not immediately adhere to the mass, is carbonized separately, and on its own account. There results from this, that, according to the proportion which the hydrogen bears to the oxygen, the state of the cokes obtained will differ very much. From those which swell to such a degree as to present the aspect of a light slag, to those which preserve the external appearance of the coal while they diminish in bulk, there exists an uninterrupted series of transitions. In the good coals with conglutinated coke, the proportion of the hydrogen to the oxygen is still favourable enough for the fragments of combustible, which previously were not in imme- diate contact, but were separated by surfaces or partitions, be- coming soft during the process of carbonization, uniting them- selves to the mass, and forming together a single body. This effect of the process of carbonization becomes particularly strik- ing, when, after destroying the aggregation of the mass of coal by pulverizing it, its powder is submitted to distillation. On the other hand, a coal which has passed into the state of a more or less complete fusion, ought, on account of its smooth, and, as it were, semi vitrified surfaces, to kindle with more dif- ficulty than an unmelted coal, which presents uneven surfaces. This is actually what is observed in the incineration of cokes ; for the intumesced cokes, being placed under the muffle of an assay furnace, require for their complete combustion a higher temperature, or more time at the same temperature than th^ conglutinated cokes, and still more than the pulverulent cokes. For the same reason, also, the coke obtained from mineral char- coal is more readily reduced to ashes under the muffle than the intumesced coke of a coal of the third class. But the case is quite different, when a mass of coke, formed into a heap, is made to burn with the aid of a current of air, whether natural or ar- tificial, and not to be consumed gradually by the action of the an the different kinds of Coal 325 burning air, which operates upon the surface of the combustible, as takes place under the muffle. The intumesced cokes main- tain the mass in such a state of motion, on account of the aug- mentation of their proper volume, that the passage of the de- composed air is never for a moment disturbed or interrupted. The conglutinated cokes already form a more compact and more firm mass. With regard to the pulverulent cokes, whether froin the commencement of the operation they were already re- duced into small pieces^ or whether in the combustion, which is gradually operated, they diminish in size, all the interstices are so obstructed that the decomposed air finds no issue, and then the combustion is arrested not from want of access of air, but from cessation of the current of air. The powder of wood- charcoal when heaped up so as to form a large mass, owing to its closeness burns with difficulty, notwithstanding the briskest affluence of air. From this manner of burning it might almost pass for a glance-coal. Whatever may be the reasons of preference which we have stated in favour of coals with intumesced coke, such coals can- not be employed in certain cases and for certain objects. Cokes that are too much intumesced, if they are heaped together in large pieces^ fall into cinders or fragments, and this arises partly from their weight. This reduction to small fragments still in- creases, if such cokes are to be burnt in fourneaiix a cuve, or if they are stratified with the substances which it is intended to melt or reduce. Thus, coals with highly intumesced coke do not furnish a suitable combustible for the treatment of iron-ore in the high furnace Qe haut Jburneau) ; but in the cases in which the pressure is less considerable, where, consequently, there is no reason to dread the reduction of the coke into small fragments, they may be employed, even for the use oifourneaux a cuve, such as Wilkinson's {urnaces., Jburneaux a manclte, and ^emi-hauts-fourneaux ; then such cokes always answer best. In general, it is the state of loose aggregation, or the lightness of cokes, which entirely decides as to their employment in the Jburneaux a cuve. A coal with intumesced coke, when it passes into coal with conglutinated coke, furnishes an excellent combustible for the use of high furnaces for melting iron-ore ; but coals with intu- S96 M. Karsten's Observations and Experiments mesced coke, which are not too much swelled, are the best of all for this object. A coal with conglutinated coke must hot have too many natural joints, because, in the carbonization, it is re- duced to too small fragments. Lastly, a coal with pulverulent coke cannot be employed, if it does not present itself in large masses, which keep together, and, in the process of carboniza- tion, form large pieces of coke. A coal which intumesces a little, is therefore always prefer- able to that which only conglutinates, and still more to that which furnishes a pulverulent coke ; for, if the first presents natural fissures, its property of intumescing destroys their bad effect ; and even in this coal, the solutions of continuity, the partitions of mineral charcoal and of foreign mixtures, which the mass may present, cease in ia great measure to be hurtful, on account of the intumescing. In the coals with conglutinated coke, and especially in those with pulverulent coke, the frequency of fissures, which, even without the existence of real joints, may result from the mere want of uniformity of substance, is an inconvenience which of itself suffices to render these combustibles altogether incapable of being converted into coke. An excessive quantity of ashes may also become an obstacle in the way of employing cokes for fourneaux a cuve ; and the lighter the cokes are, or the more they fall into fragments in the furnace, the greater obstacle will the ashes yield ; the reason of which is, that they increase the difficulty of combustion, and en- velope the surface of the coke before they have been brought to a state of melting. This difficulty of fusion, which results from too great a quantity of ashes, makes the melted mass remain in the state of a paste. There follows from this, not only that the air traverses such a mass with difficulty, but also that a part of the effect of the incandescent coke must be employed to melt the ashes. • For obtaining coke, as this is practised, by means of the small debris furnished by the breaking up of the beds of combustible in mining, it is obviously only coals with vesicular coke that can be used. Such cokes are sometimes very liable to fall into crumbs, whether on account of the nature of the mass itself, or on account of an accidental admixture of slate, clay, or other on the different kinds of Coal 3^7 foreign substances, which, from the effect of carbonization, are ' inclosed in the mass ; and, in consequence, cause these cokes, under a strong pressure, to fall more easily into fragments. Then they become altogether incapable of being used for the fusion of iron-ore in great furnaces. And further, the abun- dance of foreign mixtures which the combustible must also bring into fusion, renders these cokes unfit for being employed in the fourneaux bas a cuve, commonly called Jburneaux a mancJie. On the other hand, coke prepared with the small debris of a coal with vesicular coke, when this coal is perfectly pure, and as exempt as possible from foreign mixtures, may answer quite as well as coke produced from the same kind of coal, had it been in large pieces. It might happen, however, that a coke coming from coal in large pieces, might present more firmness than one that would result from small debris. Then, consequently, the former would be less exposed to break down into small pieces in the fourneaux a cuve, at least in very high furnaces, and under a great pressure of ore. If pyritous coals are carbonized, the coke which results con- tains in general so much the more sulphur in proportion to the larger quantity of iron pyrites that occurs in the mass of com- bustible ; but M. Karsten asserts, that hitherto he has not ob- served that the mixture of a great quantity of pyrites rendered a coal incapable of being converted into coke, nor the cokes pro- duced by it incapable of being employed in metallurgic opera- tions, from the idea that the quantity of sulphur contained in them would have too prejudicial an influence upon the quality of the product to be obtained. According to the author, this no doubt is an inconvenience, but it does not furnish a sufficient reason for entirely excluding pyritous coals from the preparation of cokes for metallurgic purposes. The case is different with respect to lighting by gas. When * the pureness of the coal is very much altered by the presence of iron pyrites, this inconvenience may entirely prevent the em- ployment of such a combustible, if the object in view be to dis- till it in the dry way for the purpose of obtaining from it a gas adapted for lighting. As we have already seen from the com- position of the different sorts of coal, the employment of a coal for this purpose does not depend solely either upon the quantity 328 M. Karsten*'s Observations and Experiments of carbon which it contains, or upon its proportion of hydrogen ; but upon the relations which exist in the coal between the car- bon, the hydrogen, and the oxygen considered together. A coal very rich in carbon, in which the proportion of oxygen to hy- drogen is as small as it can be, is very well adapted for the pur- pose of lighting : it affords gas of excellent quality, although not in great quantity. Although the quantity of carbon dimi- nishes, and that of hydrogen increases, it does not follow that the coal is better adapted for lighting, unless, along with the dimi- nution of carbon, there is an increase of the relation of the hy- drogen to the oxygen. M. Karsten, in this manner, makes application of his princi- ples to the combustibles of which the analysis has been presented in the preceding Table. Of the coals of Wellesweiler, near Saarbruck, No. VI., of the country of Essen, in Westphalia, No. VII., and of Newcastle in England, No. XI., the first and third of which present a some- what larger proportion of hydrogen than the second, it is the Essen coal, No. VII. that answers best for hghting, while the Wellesweiler coal. No. VI., that which contains most hydrogen of the three, is the coal which is least adapted for the same purpose. The Beuthen coal, No. V., is still less adapted for the purpose, and that from Berzenskowitz in Silesia, No. IV., as well as the two kinds of coal indicated by Nos. VIII. and IX. of the Table, are very bad for lighting. On the other hand, the Cannel coal. No. X., is superior to all the others, not on account of its absolute contents in hydrogen, which are not even so great as those of wood, but because the hydrogen, at the same time, bears a great proportion to the oxy- gen. It is this proportion, therefore, and not the absolute quan- tity of the carbon, considered by itself, any more than the quan- tity of hydrogen or of oxygen, that in a coal determines its rela- tive capability of furnishing gas for lighting. The cannel coal, No. X. contains 19 per cent, of oxygen, and the Wellesweiler coal. No. VI., contains less than 15; yet the former is perhaps better adapted than the latter for lighting by gas. There is a substance which is always met with in coal depo- sits, and never in those of lignite. We have already made men- on the different hinds of Coal. 329 tion of it : it is mineral charcoal *, a pulverulent combustible, of a fibrous structure, which the Germans name FaserTcohle, and which has sometimes been named Anthracite, because it is com- monly regarded as very difficult to burn. This substance is in- terposed in the coal in beds which are perfectly distinct, often very thin, and always parallel to the stratification of the beds. By a great number of trials, M. Karsten has found that, in this substance, the contents in charcoal are larger than in the coal which comes from the same bed. He considers it certain that the mineral charcoal has contributed to the formation of the coal, and that a great part of the latter consists of that same vegetable fibre from which resulted the mineral charcoal preserved in the impressions of coal. Mineral charcoal, he adds, is one and the same substance with coal. This is so true, that the pre-existence of the fibres of plants, which, in the state of isolation, formed the mineral charcoal, can only be recognized by the vegetable impressions which have remained in the combustible. But, ac- cording to the author, mineral charcoal is not, by any means, so difficult of combustion as is commonly thought. Under the muffle of an assay furnace, this substance burns with a sort of flame which proves it to be very far from being in a state of pure charcoal. The residue in charcoal which it yields on be- ing distilled in the dry way, is incomparably more easy to burn than the vesicular cokes of coal. In reality, in the operation of a high furnace, mineral char- coal, when it occurs in large quantity, resists the action of the most active blowing machines ; it reappears at the mouth of the furnace, under the aspect of a fine charcoal powder, which is named (Poussier) coal-dust, and it then seems to have under- gone no alteration. But the same effect would take place were powder of wood-charcoal applied in the same manner. It is the pulverulent state in which it exists, that makes mineral-charcoal act as if it were combustible, and which, in many circumstances, renders its employment dangerous in a high furnace for melting iron. Cokes themselves, when reduced to very small fragments, heaped upon each other, produce a similar eflect, although less complete. The same difference that is observed in the composition of • Vide Jameson's Mineralogy. 330 M. Karsten's Observations and Experiments coal, occurs in that of mineral charcoal ; when this substance presents itself isolated among the other parts of the coal, it dif- fers from it only in having a much greater proportion of char- coal. But its composition is regulated by the relations which exist among the constituent parts of the mass of coal, in the midst of which it occurs interposed. This proves that the same circumstances were in action during the formation of both sub- stances, but that the mineral-charcoal was more quickly formed, the cause of which can only be sought for in the original nature of the vegetable fibres. M. Karsten presents, in a tabic, the results of some of the comparative trials to which he submitted mineral charcoal and coal, both coming from the same spot. The following are the results of distillation in the dry way, for 100 parts of each of the two substances. Places from which thk Spkci- - mens analysed came. 1. Mine oC Glucksburg, near Ibbenljuhren, - - 2. Another mine in the same place, - - - 3. Mine of the circle of Westphalia, - - - 4. Mine of the neighbour- "j hood of Waldenburg > (Lower Silesia), - J 5. Mine of Konigsgrube ) (Upper Silesia), - j" 16. Mine of Pottschapel, ) near Dresden, . - J Mineral Charcoal. Residue in Charcoal, in 100 parts 90 95.3 97.4 91.9 89.85 79.33 Ashes com- ing from the residue in Charcoal for 100 parts. 2.8 2.2 1.06 3.95 7.55 1.3 Remains in pure Char- coal for 100 parts. Con- tents in Charcoal. Coal of the same localities. Residue in Charcoal after abstraction made of the Ashes, for 100 parts. Con- tents in Carbon. { { 5.74 I 87.95 93.2 93.1 95 82.30 78.03 87.9 Pulveru- lent Coke. 81. Intumesced Coke. 91.4 Pulveru- lent Coke. 59.8 Intumesced Coke. 63.2 Congluti nated Coke. 41 Intumesced Coke. It is known, that, in the dry distillation, the coals, with in- tumesced coke, on account of their greater contents in hydro- gen, always afford less charcoal in proportion than such coals, whether with conglutinated coke or with pulverulent coke, as have really the same contents in carbon. In recalling this fact to mind, we see, by the preceding table, that the contents in carbon of mineral charcoal are entirely regulated by the nature of the coal, in the midst of which it presents itsel(. For ex- ample;, in the same manner as Nos. 1. and 2. of the table bear on the different hinds of Coal. 331 each the numbers 93, for the remains in pure charcoal obtained from the mineral charcoal, the table would bear the number 87.9 of coke, in reference to the coal of the same points, as well in the case of No. 2. as in No. 1., if, in both, the coal had fur- nished a pulverulent coke ; but, in the second case, the coal has furnished an intumesced coke, a coke which is always less abun- dant when the contents in carbon are the same. This is the reason why, in No. 2., there are only 81 parts of that residuum in charcoal which is called coke. The same reasoning will ap- ply to the other numbers of the table. It is remarked, moreover, that, in mineral charcoal, the con- tents in carbon vary from 78.03 to 95.74 per cent. ; while, in the coals of the same localities (Nos 6. and 3.), they vary from 41, in contumesccd coke, to 91.4, in pulverulent coke. M. Karsten concludes from this, that mineral charcoal often con- tains much less carbon than many coals. The pulverulent state of the residuum which the carbonization of the former affords, sufficiently indicates, continues the author, that in mineral char- coal, the proportion of oxygen must be much greater than that of hydrogen. Lastly, The examination of mineral charcoal appears to him to prove that, in the formation of coal, some parts of the vegetable fibres have advanced more rapidly than others to- wards carbonization. M. Karsten then states considerations calculated to furnish the means of ascertaining in some measure the composition and properties of coals by their mere aspect. The following are the principal ideas of the author : It is only in coals which are very rich in carbon, that a cer> tain homogeneousness of the mass is observed. All the fossil coals, with a small proportion of carbon, consist of a mixture of charcoals, of which some are rich, and others poor, in carbon. When a mass of coal is interrupted, whether by alternating beds of combustible, richer or poorer in carbon, or by walls of fissures, or by interposed beds of mineral charcoal, these cir- cumstances may frequently decide as to the employment of such coal for a particular object. It is from this important conside- ration, from the circumstances of a mass of coal in this respect, that mineralogists have distinguished different sorts of this com- bustible by names, which it will suffice just to mention here : 332 M. Karsten's Observations and Experiments Pitch-coal, or piciform-coal, having tke lustre of pitch (Pech- Jcolile) ; Slate-coal (Schieferkohle) ; compact or cannel-coal {Kennelhohle) ; Foliated coal (Blaetterkohle) ; Columnar coal (Stangenkhole) ; Coarse coal {GrohTcohle). An alternation of beds of coal, some richer, others poorer in carbon, with frequent interpositions either of fissures or of par- titions, or even a frequently repeated alternation of very thin beds of mineral charcoal, dividing the mass of combustible, — such are the circumstances which afford proof, sometimes that a coal is slaty, sometimes foliated, sometimes passes from slaty to foliated coal, according as such effects are more or less nu- merous. If the arrangement of the combustible substance in thicker beds appears to the eye to remain constant, a coal rich in carbon, which therefore exhibits the lustre of pitch together with the conch oidal fracture, is named Pitchcoal ; while a coal poorer in carbon, and of a dull appearance, is named Cannel Coal. These two kinds of coal, the one richer in carbon, and the other poorer, when they are intimately united with one an- other, and not disposed in alternating beds, occur in mineralogi- cal systems under the denomination of Coarse Coal. If sufficient importance be attached to the separations of the mass of combustible to make it the basis of a classification of coals, then, without doubt, matters may be allowed to continue so ; but, in that case, it cannot be hoped that the name given to the body which it is to designate, should present an accurate image of it to the eye. A slaty coal may differ as much from a coal of the same name, as two pitch coals, or two cannel coals, may differ from each other ; and these manifest a mutual accor- dance only in certain respects, while in other respects they are much more widely separated from each other than a foliated coal is from a pitch coal, or a slate coal from a compact coal. The colour^ lustre^ cohesion, and hardness of the combustible, are in general the only properties from which the external and distinctive characters of coals are derived ; for the specific gra- vity is an uncertain guide in this respect, on account of acci- dental mixtures. But these properties themselves do not seem to be sufficient, if it be required that, with the external charac- ters, the intimate nature and composition of coals be at the same time determined. The true difficulty, however, lies solely cm flie different Mnds of Coal 333 in this, that coal ivS almost always a mixture of at least two dif- ferent kinds, which are considered as a homogeneous whole ; but, in this respect, coal does not form an exception to the ge- neral law, that the chemical composition of an inorganic body is manifested by its external properties. An intense black colour in coals, joined to a high degree of lustre, as well as a considerable hardness, always indicate that they contain a large quantity of carbon, and that the oxygen in them predominates over the hydrogen. The species of lustre determines the relation of the carbon to the other constituent parts. Pitchy lustre indicates a smaller proportion of carbon ; the pas- sage of this lustre to the semi-metallic indicates a greater. Black- ness of colour, high lustre, and slight cohesion and hardness, cha- racterise the coals which are rich in carbon, and in which the hy- drogen predominates over the oxygen. A black colour, a dull appearance, and a marked cohesion, with a certain degree of hardness, are the signs which indicate a coal less rich in carbon, in which the oxygen predominates in a high degree over the hy- drogen. When the colour becomes a dark brown, it implies that the proportion of hydrogen has increased with relation to the oxygen. If, while the black becomes less intense, the coal presents a duller aspect and an inferior degree of hardness, its cohesion remaining the same, it is because the combustible still contains less carbon, at the same time that the oxygen predo- minates over the hydrogen. If it be wished, according to what has been stated, to deter- mine precisely the nature of a coal, it appears sufficient to point out whether or not the mass is homogeneous, and what are its characters with respect to colour, lustre, cohesion, and hardness. Should it be required, the carbonisation will make known the quantity and appearance of the residuum in charcoal ; it will thus complete the disclosure of the composition of the combustible. With regard to the specific gravity of coals, it presents few means of characterising them, not only on account of acciden- tal mixtures, but on account of all the variable circumstances which may have accompanied their formation. In reality, coals which are very rich in carbon commonly have a great specific gravity, but this is only in the case where the oxygen predo- dominates over the hydrogen. If the proportion of the latter 334 M. Karsten's Observations and Experiments m increases, then the coals which are very rich in carbon often present a much less specific gravity than the combustibles in which the proportion of carbon is small. It may be admitted as a general rule, that the proportion of carbon being the same, the mineral combustibles which have the smallest specific gra- vity, are always those in which the relation of the oxygen to the hydrogen is the smallest that it can be. M. Karsten proceeds next to an examination of glance-coal, an- thracite, and graphite. The author thinks that the combustibles known by the name of glance-coal, whether of Schcenfeld or of Lischwitz in Saxony, or of Vise near Liege, are nothing else than a coal which con- tains a very large proportion of carbon. He is led to suppose that graphite and true glance-coal, that of Rhode Island, for example, were originally substances analogous to coal ; but that, in these substances, the separation of the constituent parts of coal is so advanced, that, at the present day, they have almost all attained the state of pure carbon. From the experiments which M. Karsten has made with reference to this subject, he concludes, that native graphite is erroneously considered as a carburet of iron, and that this substance should not be con- founded with the graphite which is artificially obtained in fur- naces. This latter substance, says the author, comes much nearer to glance-coal in its lustre, its hardness, and its resistance to combustion, than to native graphite. The two kinds of gra- phite have only perhaps been confounded together, because they both have the property of staining the fingers. Perhaps the graphite of high furnaces, from the strength of its lustre, and the difficulty of its combustion, presents a transition from glance-coal and native graphite to diamond. According to the author's researches, the native graphite of Borrowdale in England contains at the most 15 per cent, of foreign parts, which consist of silica, alumina, oxide of iron, oxide of manganese, magnesia, and oxide of titanium, with a trace of chrome and lime ; but the proportion of oxide of iron in the ashes it contains never rises above 2.75 per cent. Thus, in 100 parts of graphite, there would be at the most 1.9 per cent, of metallic iron ; whereas this substance is commonly regarded as composed of 95 parts of carbon, and 5 of iron. on the different kinds of Coal. 335 Native graphite is not therefore a carburet, according to M. Karsten ; it is a carbon, the pureness of which is altered by an ac- cidental mixture of mineral matters which contain iron. The au- thor concludes from this, that the differences which exist between native graphite, glance-coal, diamond, and artificial graphite, must not henceforth be attempted to be explained by the pro- portion of iron which is observed in the first and last of these substances. Let us rather avow, he adds, that our knowledge is not yet sufficient to enable us to unveil the cause of the diffe- rences in the phenomena which these substances present with respect to light, and their other physical properties. To he concluded in our next Number. Observations on the Cow4ree of the Caraccas ; and on the Cul- ture of the Nutmeg-tree. In a Letter from Mr David Lock- HAUT, Curator of the Botanical Garden in Trinidad to Ayl- MEii BouRKE Lambert, Esq. F. R. S. V. P. L. S. &c. X HAVE just returned from an excursion to Caraccas, where I collected the juice of the Cow-tree (Palo de Vaca), and I have now the pleasure of sending you a phial of the milk, together with a few leaves, and a portion of the root of the tree. The Palo de Vaca is a tree of large dimensions. The one that I procured the juice from, had a trunk 7 feet in diameter, and it was 100 feet from the root to the first branch. The milk was obtained by making a spiral incision into the bark. Carauo, the place where I met with the tree, is about fifty miles east of La Guayra, and at an elevation of from 1000 to 1200 feet above the level of the sea. It is likewise found between Cape Codera and Barcelona. The milk is used by the inhabitants where- ever it is known. I drank a pint of it, without experiencing the least inconvenience. In taste and consistence, it much re- sembles sweet cream, and possesses an agreeable smell. I was so fortunate as to procure some young trees and roots of the Palo de Vaca, which I will endeavour to increase, and, if I prove suc- cessful, you may expect to have a plant. I am sorry that I was not able to collect any specimens worth sending during my visit to Caraccas, my stay being limited to eight days, six of which Mr l^ockhart o)i the Cow-tree of Caraccas. were spent in proeuring. the cow-tree. I however picked up a few seeds, which are sown in a mixed state at St Ann's, and which are hkely to afford something interesting. I am glad to hear that botany goes on prosperously in Europe. I am sorry to say, that, during nine years'* residence in this part of the world, I have found very few persons who take an interest in the ad- vancement of science, the principal aim of the people here being to make money in every way they can. For the last eighteen months, from close attendance to the garden, I have had but little time to devote to collecting. You will be happy to learn, that we have succeeded in in- creasing the Nutmeg-tree, both by inarching and by laying ; for from seed they cannot be depended upon, as they have been found to produce so few female trees, not more than one in - thirty or fifty. We have likewise ascertained, during the last season, that the female trees sometimes produce male flowers. A tree that was raised at the garden of St Vincent's and brought hither, produced, in June 18^4, male flowers ; and in June 1826 the flowers were all female. The same tree this year shews abundance of fruit, which are likely to ripen. In 1823, the first flowers that one of our female trees produced, were all male. We have now ten fine female trees in the garden, and one of them has at least 700 fruit on it. We have about forty more of the same sex, raised by inarching and layers. The climate and soil of this island seem congenial to the Nutmeg-tree. Trinidad, ^^jn/ 30. 1827. Note by Mr Don. I had an opportunity of examining attentively the leaves of ' the Palo de Vaca, and found them to approach very close to those of several South American species of Ficus. The dispo- sition of the nerves and veins was precisely similar, which, to- gether with the insertion and consistence of the leaves them- selves, appear to justify the propriety of the place assigned to the Palo de Vaca, by M. Kunth, who has arranged it in the fa- mily of Urticea, under the name of Galactodendron utile ; but neither he nor myself have seen either the flower or fruit ; so Dr Grant on the Structure and Nature of Flustroe. 337 that as a genus, it rests on very insufficient grounds. The tree, however, is evidently related either to Fiats or Brosimum. The juice contained in the phial sent to Mr Lambert had the appearance of sour cream, and, notwithstanding that it had suffered material- ly from the long voyage, the taste was by no means unpalatable. To prevent any misconception of the method taken to increase the female Nutmeg, it may be proper to remark, that, by inarch- i ng, he means inarching the branches of the female tree on the young plants produced from seed, by which mode a certain supply of female trees is obtained ; whereas from seed, several years must elapse before the trees produce flowers, and then the result must be frequently disappointing ; more especially if the disproportion between the number of male and female trees from seed be so sreat as Mr Lockhart has observed. A verv few male trees will be found sufficient for a whole plantation of females. I do not remember of any other instances on record of an absolute change of sex, than the striking ones mentioned above by Mr Lockhart, as occurring in the nutmeg tree. It is a fact well deserving the attention of physiologists. Individual plants, producing at the same time male and female flowers, are of common occurrence. Observations on the Structure and Nature qfFlustr(z. By R. E. Grant, M.D. F.R.S.E. F.L.S. M.W.S. Fellow of the Royal College of Physicians of Edinburgh, Prof, of Zoology in the University of London, &c. (Continued from p. 118.) In examining the anatomy of the other species of Flustrae above mentioned, more care is required than in the examination of the F. carhasea^ as the two plains of cells composing the branches of the F. foliacea and F. truncata require to be care- fully separated from each other, and the sessile species, F. tela- cea^ F. dentata^ and F. pilosa, require to be removed from the surface of the fuci, or other substances to which they adhere, in order to render them sufficiently transparent to allow their minute structure to be perceived through the reflecting micro- scope. The Flustra foliacea^ Lam., like the F. carhasea^ al- ready described, is an inhabitant of deep water, and is very rarely met with in a fixed situation near the shore, or in places JULY SEPTEMBER 1827. Y 3^8 Dr Grant on the Structure and Nature ofFlustrae. accessible at ebb tide, though, from the immense quantities of it which I have found drifted alive on our eastern and western coasts, and constantly brought up by the dredges from oyster-beds, it appears to be the most abundant species on the British shores. It generally adheres to shells or stones, on the surface of which it first spreads like a sessile species with a single plain of cells, then rises up in the centre of the expanded base in a branched form, when its branches are always composed of a double plain of cells. It is a very large species, its branches often amounting to many hundreds, and presenting on their two surfaces some hundred square inches of cells. It has a strong and pleasant odour of violets, which it retains for some time after being taken from the sea, and it is probably the species which the inhabitants of Iceland are said to chew as a substitute for tobacco. The branches have a thick, opaque, and coarse appearance, gene- rally a yellowish-grey colour, and a rough surface covered with minute reverted spines ; they are variously subdivided, but most frequently present a broad palmate form, terminated by nume- rous rounded and expanded digitations. The sides of the stems and lower branches do not present the thickened, opaque, and compact margins we find in the F, truncata and F. carbasea^ which are much more delicate species. The tips of the branches are thin, soft, and transparent, as in other branched species, and as in the anterior margin of sessile species, from their containing little calcareous matter, and from the polypi in that situation be- ing young, colourless, and translucent. The boundaries of the cells on the opposite plains do not coincide, nor have they any determinate relation to each other in their position. The broad rounded extremity and the aperture of the cells are always above, the contracted and flat base always below. The cells are arranged on each surface, as in the F, carbasea ; the opaque sides of the cells form continuous ramified lines from the base to the apex of the branches ; and the first cell of a new series in the middle of the branch is always smaller than the cells which surround it, being confined to a small angular space, formed by the bifurcation of the opaque lateral wall of a per- fect cell. The tips of the branches are never bounded by a smooth continuous line, as we observe them in the F. carbasea and F. truncata, but are terminated by the round bulbous ex- Dr Grant mi the Structure and 2'Zature qfFlustrcB. 339 tremities of the last two rows of cells ; this remarkable difference is observable by the aid of a common lens. The cells are shorter and proportionally broader than in the F. carhasea, being about the sixth of a line in length, and a little more than half as much in breadth. By tearing the two plains of cells asunder, we render them nearly as transparent as in the F. carbasea, and can distinctly perceive the structure of the parts within. The aperture of the cells is formed by a semicir- cular lid, convex externally and concave internally, which folds down when the polypus is about to advance from the cell. The opening of this lid in the F. truncata, where it is very long, ap- pears through the microscope like the opening of a snake^s jaws, and the organs by which this motion is effected are not percep- tible. The lid of the cells opens and shuts in JlustrcB^ without the slightest perceptible synchronous motion of the polypi. We sometimes observe parts, in other calcareous zoophytes, possessing distinct power of motion, though apparently unconnected with the body of the polypi ; thus in the Cellaria avicularia, Lam. whose polypi have the same structure, and the same connection with the cells as mflustrce, I have observed in living specimens a constant motion of flexion and extension in the remarkable testaceous processes shaped like a bird's head, and attached by pe- duncles to the outside of all the cells. These processes or organs are likewise provided with lateral folds, like the valves of a shell, which have a distinct and regular motion corresponding with the flexion and extension of the entire process. The aper- ture of each cell of the F. foliacea, is defended by four project- ing spines, which arise from the calcareous margin of the cell. There are two spines on each side of the aperture, and the upper two are more than twice the length of the lower pair, and slight- ly curved upwards. When we look transversely on the surface of a branch, the spines appear to be arranged in very regular transverse curved rows, and when we observe the surface longi- tudinally, they appear to be arranged in very regular longi- tudinal straight lines. The spines are calcareous, tubular, cylindrical, shut at their extremity, and appear obviously destin- ed to protect the expanded polypi. The two pairs of spines belonging to each cell are placed only on the upper half of the cell, although, from the contiguity of the cells, the lower half of each is likewise defended by the spines of the adjacent cells. 340 D Grant on the Structure and Nature of FlustrcB. so that they serve also to protract the polypi when in a retract- ed state. No projecting spines of this kind are found in the F, carhasea, and they form the most obvious character of the F.foliacea. The bundles of minute spicula pointing hori- zontally inwards from the margins of the cells in the F. carhasea are not present, nor apparently required in this species. By the aid of the microscope, we perceive the same vascular appearance of the thin membranous covering of the cells as in the F, car^ hasea, the same dark round spot in the center of those cells which have lost their polypi, the same imperfectly formed empty cells along the margins of the branches, and similar rudimentary polypi in the last two or three rows of cells at the free extremi- ties of the branches. The polypi of the F. Jbliacea are about twice as long as the cells, have their body coiled up in a spiral turn, and bifur- cated near its lower extremity, and they have the same attach- ment by bundles of soft loose fibres to the aperture and base of the cells, as in the species already described. They have only fourteen tentacula, sometimes thirteen, which are very long, slender, and ciliated on their two lateral margins. The expand- ed tentacula form a bell-shaped cavity, into which there is a con- stant current of water, produced by the incessant rapid vibration of the cilia^ and in the center of this cavity is the circular pro- minent retractile mouth of the polypus. The tentacula remain in this expanded and regular form, when the polypi are found hanging dead from their cells ; and the same is observed in many other zoophytes, which enables us to observe their number and form with more ease through the microscope. The head of the polypus is small, the body comparatively strong, the continuation of the body below the bifurcation very thick, conical, and taper- ing to its posterior termination, the globular appendix of the body, and its tubular cervix, are smaller than in the F. carhasea, and the same opaque matter is found in the cavity of the globu- lar sac. A distinct and constant revolution of particles is seen in the whole of the tube leading from the body of the polypus into the round sac, as if produced by cihse placed within ; there is no pulsation or contraction of the part, nor can we perceive any fluid passing from that cavity into the vessels so extensively ramified on the coats of the cells. A similar continued vibra- tory motion is seen within the mouth in most polypi, which is Dr Grant on the Structure and Nature ofFlustrte. S41 undoubtedly produced by ciliae in that situation ; these minute processes appear to be the only active organs in the circulation of the fluids in zoophytes. The body of the polypus has the usual red colour, while the head and arms are nearly colourless. The long cylindrical and curved body of the polypus is tubular to its posterior termination, which is shut ; and we can sometimes perceive a small bolus of food moving to and fro in the conical part of the body below the bifurcation. The globular sac in this species does not appear to be connected with the formation of the ovum, nor with the regeneration of new polypi in the old cells. The ova of this species of flustra begin to appear early in au- tumn, and continue to be generated in the cells during the whole winter ; those of the F. carhasea make their appearance later in the season ; and I have elsevyhere shewn, that, in other zoophytes, different species of thesaine genus vary much in their season of generation, thought/residing together on the same rock. The ova first make tj:}eir appearance at the narrow base of the cells as very small, pale- red, gelatinous spheres, and the polypi of such cells ate generally removed, and only a small round dark brown spot is seen in their stead, in the center of the cells. There is but one ovum in each cell, as in other JlustrcB and calcare- ous cellarice ; and, as it enlarges in size, it advances higher in the cell, till, in its mature state, it occupies the broad upper part of the cell. When the mature ovum is found at the summit of the cell, we observe a distinct wide helmet-shaped capsule sur- rounding it, and separating it from the cavity of the cell. By examining the ovum within this capsule, with the microscope, we perceive its cilise in rapid motion ; and I have frequently ob- served the ovum, in this situation, contract itself in different di- rections, shrink back in its capsule, and exhibit other signs of irritability before its final escape. The helmet-shaped capsule of the ovum is open at the top, and connected with the aperture of the cell, so that the ovum readily escapes, by contracting its body and moving its ciliae. On escaping from the cell, the ovum glides to and fro by the action of its ciliae, and, after fixing, it is converted into a single complete cell, from which new cells shoot forward. Polypi make their appearance in shut sacs, at the bottom of the new cells, when they are sufficiently formed to protect them. When the ovum has escaped from the cell, the dark round spot in the center of the cell enlarges, and a new po- 342 Mr Blackader's Account of an Aurora Borealis. lypus shoots out from that point, so that, at this season, we ob- serve young polypi, in every situation, on the branches, the whole of the old cells are thus never found entirely deserted, the same cells may repeatedly produce ova and polypi, and the whole zoophyte retain its energy for several seasons. Account of an Aurora Borealis, observed at Edinburgh 16th January 182T ; with some particulars of another, of a pre- ceding year. With a Plate. By D. Blackader, Esq. Communicated by the Author. jCjLBOUT 9 oVlock, p. M., evening fine, brilhant moonshine, a beautiful white, opaque, drapery of cloud, extending from the zenith to within about 15" of the NW. horizon. The wind had for some days been boisterous and variable, and had veered, in the morning, from NW. to NE. ; but the air was uow calm and serene. In the course of a few minutes the cloudy tissue had entirely disappeared, and a brilliant aurora was exhibited, in rapid change of feature, and distinguished by unusual proximity. Horizontal cloudy vapours, of great tenuity, repeatedly accom- panied its more brilliant evolutions, seeming to support its columns ; appearing and vanishing with the more vivid corus- cations. Thereafter, the aurora became extended, to right and left, fortning the segment of a large circle, although not exceed- ing in altitude more than 1 5°, and, at either extremity, vanish- ing, like the higher strata of clouds, in the blue expanse. This arch may be conceived of by means of the sketch, Plate IV. No. 1 . ; whereof the landscape includes an angle of about 90°, having its centre in the magnetic meridian ; near to which a principal star is seen, at that hour. The lower edge of this arch was al- ways above that star. Subsequently, a second arch was formed in front thereof. On the right exti'emity, the arch always presented a broken or interrupted line, with recurrence of separate masses of lumi- nous spears, of a brilliant bluish-white lustre ; a golden tint, and burnished lustre, distinguished the continuous arch of the cen- tral portion, which, towards the left, became coppery. The second, or front line, was uncommonly distinct, and much nearer than the one first formed. Other figures, 'afterwards I ^ Mr Blackader's Account of an Aurora Borealis. 343 formed, were still lower, and nearer to the observer. A power- ful beam, from one of these more advanced figures, traversed the arch, and formed a marked contrast, in point of intensity, at the point of bisection. The circular, or crescent-shaped figures, in which the spears of light were often arranged, occu- pied planes, sometimes inclined to the right, which evidently traversed the line of vision ; their nearest, and always broader, margin, being apparently depressed a number of degrees below it ; otherwise, that broader and brighter margin must have covered the farther half; unless, indeed, the nearest were the more elevated ; which, however, could not be the case, unless by great ocular deception. Had they occupied the same plane, the laws of perspective would have placed them in the reverse, in point of apparent elevation. See sketch, Plate IV. No. 9>. In general, the principal arch was never obliterated during the greater part of an hour; and although, at first view, it seemed to be composed of a stratum of continuous brilliant light ; yet^ upon subsequent observation, small portions were projected beyond the common line, with encroachments, also, on the infe- rior margin. At times, this became more apparent, with re-en- tering angles. Suddenly a great portion of the arch would break up, forming circular and curved figures, the bases of immense tubular fasciculi, which soon vanished, instantaneously; to be again reconstructed, and to undergo new transformations. About 10 p. M. the whole disappeared ; the arch having pre- viously reoccupied the original position, above the star ; and it never retreated farther towards NW. Nor was it followed with any luminous appearanee, gradually retreating below the hori- zon, in that direction, with decreasing brightness ; which is com- monly the case. At this period, a few scattered clouds, pro- ceeding rapidly from SW., had already crossed the magnetic meridian, near the horizon, although the south wind had not yet been perceived at the surface of the earth. Next day it stood in that quarter, bringing a great body of the turgid cloud, pe- culiarly dense, compacted, and low ; and the former tempestuous weather again ensued. It may here be remarked, that, on the 16th, the stormy wea- ther had been much felt on the coast of Ayrshire, proceeding from NW., followed with a severe storm of thunder and light- ning. 344 Mr Blackader*'s^6ro?^w^o/'an Aurora Borealis The following remarks seem necessary to illustrate this re- markable aurora. 1 . The streams, or spears of light, were uniformly projected downwards, from an immense elevation ; in this particular bear- ing a resemblance to the usual appearance of the larger shoot- ing-stars, or those nearest the observer. The colour of their light is also similar, and they coincide in being most brilliant at the expanded or lower portion ; where, in each, the rapidity of projection, emulating the glance of thought, seems to be arrested in the act of dissolution, when they gradually disappear. The shooting-stars are the more evanescent, and frequently more brilliant. The shape of the diminishing swells, exhibited at the period of dissipation, indicate that this meteor is of the spheroi- dal form. On some occasions, also, their exit takes place beyond the verge of the horizon, or is concealed by the vapours inter- posed in that direction. The expiring blaze is by these means concealed ; but the course of the meteor appears much more ex- tended, in proportion to the distance of that course from the zenith. 2. The difference in the colour and intensity of the light of this aurora, from right to left, bore a resemblance to that of the moon, when near the horizon, compared with her light at a greater elevation. The cause may be found in the incipient change, on the lower atmosphere, which had commenced on tlie south or south-west, with the wind from that quarter. 3. A luminous undulation seemed to traverse, by fits, diffe- rent portions of the lengthened congeries of luminous forms, ■which, less or more developed, appear to constitute the grand arch. For some time this undulation was uniformly from right to left. Towards the close it occurred repeatedly in the con- trary direction. A very short observation was sufficient to sa- tisfy me that no undulation takes place. It is merely the effect of a strong light behind- the line under view, and concealed thereby, — passing to and fro, to right or left, it successively im- parts an increased luminosity, of different intensities, which, be- ing transmitted in succession, through the various and varying forms of the front line, produces an appearance of undulation. The posterior light may easily be detected, passing the less per- fect portions of the front line ; for here the expression of an un- observed at Edinburgh \Qth January 1827. 345 dulation disappears, and the play of the remote streams of light is brought directly to the eye. The resemblance of an immense vibrating curtain was readily suggested by the form of the front line of the arch, when most irregular, and particularly 'vhen the posterior lights, in frequent motion, combined their efforts with the various flitting motions of the front. But I do not apprehend any lateral motion of these luminous rays. I conceive that what appears to be mo- tion, is merely an effect of the vertical projection of circular screens in lateral succession ; the deception being aided by the great rapidity, and the distance and indistinctness of the opera- tions. It seems quite possible that the front-swells of the prin- cipal or chiefly stationary arch, concealed similar curtained ex- tensions on the same plane. As a counterpart, the second arch becoming broader and brighter than the first, covered a great portion of it longitudinally, and concealed the star. Thereafter the succession of advanced lights, already described, reappeared in front of the western half. 4. As the aurora borealis and the shooting star stand connected with changeable weather, or, at least, with extensive transposi- tion of masses, or strata of the atmosphere ; and, as the aurora has, by continued observation, been connected with a change of current, in the region of the lower clouds, often extending to the earth, whereby the south-west or equatorial currents dis- place those from the north-east, without disturbance of the strata occupying more serene altitudes ; it would seem very possible that the different states of electricity in the contiguous strata, might dispose to equalization, in the form of the aurora, or, under other circumstances of transposition of strata, in that of the shooting-star. 5. After the aurora of the 16th had disappeared, a thin re- ticulated cloudy tissue could be discerned, of seemingly great elevation. But the actual height of the higher tiers of clouds, viewed by moon-light, is not easily estimated. The splendour and peculiar light of this aurora, opposed to a brilliant moon, afforded no point of comparison whereby to estimate its eleva- tion, although it appeared most provokingly near. For the na- ture of its light seemed quite distinct from that of any of the heavenly bodies ; and what it wanted of intensity, seemed to 346 Mr Blackader's Account of' an Aurora Borealis be supplied by proximity, although defective in point of ra- diance. But its position relatively to the star, and the relation of its extremities to the earth, combined with its apparent length, may possibly aiFord some criteria. Its nebulous, evanescent ac- companiments, were too circumscribed to offer any certain data. They may have been thin clouds, illuminated by the aurora, which seems to be corroborated by the fact, that only the most southerly and lowest portions were accompanied with them, and this only under their lower extremities. Their forms seemed to bear relation to the position and intensity of the lights, in the absence of which they would have been invisible. At whatever altitude the aurora makes its ap}:)earance, it in general gradually retires in the direction of north-west, until it descends below the horizon, which is commonly accomplished by 11 p. M. In proportion as the horizontal distance is increas- ed, the longitudinal extent of the meteor is contracted. In the Arctic Regions, when the aurora presents a continuous arch, it is a small segment, m. this particular resembling the arch de- scribed by the clouds of that region, which, in the winter at least, is comparatively low, and the aurora also is perceptibly low in proportion, — which circumstances combine in producing an appearance of radiation, with divergent rays. The singular and very striking aurora noticed on a former occasion, as occurring here, in March 1825, was not without parallel. I have since learned that Professor Hallstrom of Abo, bad observed similar black rays. The sketch 3, of Plate IV. may assist to form an idea of it. And it may be permitted to account for their appearance on possible principles. Thus the stratum of clouds often formed immediately above that which, on that occasion, was interposed as a dark screen betwixt the eye and the lower portion of the northern regions of the heavens, is vei'y fertile of detached turgid clouds, which seldom move with rapidity. Over that screen of continuous clouds, the aurora hght was brilliant, proceeding from a quarter depressed below its margin, and illuminating its superior edge ; all below, with the intervening landscape, being involved in pitchy darkness. Suppose a few of these detached masses of cloud to be extended, from right to left, at various distances behind the screen, it is certain that the light beyond them would project their shadows observed at Edmhurgh, I6th January 1827. 347 in a pyramidal form, provided the light were sufficiently broad and extensive ; and that these shadows would appear on the verge of the screen of dark cloud, provided that it, the detached clouds, and the aurora lights, were upon the same plane, and within certain distances of each other. It remains to account for the irregular and sometimes huddling motion of the dark rays, at times stationary. But this exactly corresponds to the lights proceeding from an aurora in full play ; and particularly it cor- responds with what has been termed a luminous undulation in extended lines of aurora. That aurora was accompanied with a luminous arch of great apparent altitude passing through the zenith, stationary nearly two hours, and gradually disappearing with the aurora. It had none of that effulgence which the aurora often exhibits ; but a soft whiteness, resembling the appearance of some kinds of cloud, a feature common to similar arches. Towards the close, it ap- peared to be broken into fasciculi, which traversed it at acute angles, and which were not strongly defined. Similar arches have been observed in different places, at the same instant, ap- pearing in the zenith of each, and apparently much more ele- vated than the more fixed portions of any aurora. Are they to be viewed as the reflexion of the light of those auroras with which they are accompanied, proceeding from a thin stratum of cloudy tissue ? Overland Arctic Expediticm. ▼ V E have learned, with much satisfaction, that dispatches have reached his Majesty's government from Captain Franklin, announcing the safe return of the expedition, commanded by that able and enterprising officer, to the winter quarters at Bear Lake, after exploring the coast of the Arctic Sea to the extent of thirty-six degrees of longitude. The expedition, consisting of Captain Franklin, Lieutenant Bach, Dr Richardson, and Mr Kendall^ with twenty-four men, (of whom twenty were British, two Canadians, and two Esqui- maux), left Bear Lake towards the end of June 1826, in four small row-boats, and descended the Mackenzie in company un- til the 3d of July, when Captain Franklin detached Dr Richard- 348 Overland Arctic Expediticm, son and Mr Kendall, with a party, in two of the boats named the Dolphin and Union, to survey the coast to the eastward ; while he himself, with Lieutenant Bach, and the remainder of the expedition, directed his course to the westward. They reached the sea on the 7th of July ; on the 9th they were stopped by a compact field of ice adhering to the shore, and the remainder of the month was spent in pushing the boats through the partial openings formed in the ice. Their progress in this way was not only tedious and hazardous, but also extreme- ly laborious ; nor, from the nature of the coast, was the danger diminished, when, in the month of August, the ice gave way, and afforded them a passage. The approach to the shore was so difficult from the shallowness of the water, that they could seldom get nearer than a mile or two, even by dragging the boats through the mud ; and only once were they able to effect a land- ing on the main shore after passing the 139th degree of longi- tude. On all other occasions they were obliged, when in need of repose or shelter, to have recourse to the naked, sandy, or gravelly reefs which skirt the coast. On these cheerless banks they were detained by frequent storms, and dense fogs, one of which lasted eight days ; — and they occasionally suffered from the want of fresh water, having once passed forty-eight' hours without that needful refreshment. Notwithstanding these for- midable obstacles^ such was the zeal and perseverance of the ad- venturers, that, by the 18th of August, they attained nearly the 150th degree of longitude, after having been carried by the trending of the coast beyond 70| degrees of north latitude. They were now nearer to Icy Cape than to the Mackenzie, and whether Captain Franklin advanced or turned back, the difficulties and dangers were numerous. Since their arrival on the coast the party had made the utmost exertions for forty-two days in getting thus far ; they had reason to fear that the stormy weather would become more frequent as the short and precarious summer of that climate drew to a close, and that the navigation of the sea would not continue practicable for their small open boats above a fortnight, or at the very utmost for three weeks longer. The Blossom was appointed to meet the expedition in Behring's Straits, and all the skill and per- severance of an accomplished British seaman were exerted by Overland Arctic Expedition. 349 Captain Beechy, the commander of that vessel, to reach the rendezvous ; but Captain FrankUn had already extended his voyage as far as prudence, supported by courage, could war- rant. To have continued it beyond this period, along an un- known coast, in quest of a passage to the appointed place of meeting with Captain Beechy, would have been rashness. It remained therefore only to return by the outward route, of which the dangers were lessened by being known. By the end of August they reached the mouth of the Mackenzie, after having encountered heavy gales of wind on the passage, and arrived at Bear Lake on the 21st of September. — The inhabitants of the coast are numerous, and we understand that, on the voyage out, the boats having grounded on a shoal, upwards of 250 Esqui- maux, arming themselves with large knives, rushed into the wa- ter, attempted to carry off the stores, and even threatened to de- stroy the whole party. The cool bravery evinced by the expedi- tion, deterred them from putting their threat into execution, and the judicious measures of the commanding officer, ably seconded by the courage and conduct of Mr Bach and the boats' crews, ultimately rescued every thing of importance from the hands o£ these freebooters, without any personal injury having been sus- tained on either side. Other meditated attacks, both of Esqui- maux and Mountain Indians, were frustrated with equal good fortune. Previous to the return of the expedition, however, the Esquimaux were drawing towards the mouth of the Mac- kenzie, with the view of assembling a large force there ; and had it been detained by the weather, or any other accident, above two days longer on the coast, it could scarcely have escaped without a conflict. The eastern detachment under Dr Richardson and Mr Kendall succeeded in surveying the coast between the Macken- zie and the Coppermine, having, in the prosecution of their voyage, doubled Cape Bathurst in lat. 70° 37 N, long. 126° 52' W, and entered George the Fourth's Coronation Gulf, by a strait, which led them nearly two degrees of longitude to the eastward of the Coppermine. They quitted their boats near the mouth of that river, and, by travelling overland, reached the es- tablishment at Bear Lake on the 1st of September. Much credit is due to Captain Franklin for the judicious 350 Mr Arnotfs Tour to the South of' France arrangements that enabled him to complete with safety this extensive survey of the Arctic coast. Only eleven degrees of lon- gitude remain unknown to the westward of the Macken- zie, and the discoveries of Captain Parry interlink with those of Captain Franklin to the eastward, so that the complete knowledge of the North-west Passage has been nearly attained. This has been an object of British enterprise for three centuries, and the discoveries -that have been made by expeditions equip- ped expressly for that purpose, from the voyage of Sebastian Cabot in 1496, downwards, have not only contributed to raise the naval fame of England to the proud pre-eminence it has at- tained, but have given rise in the New World to some of the most remarkable establishments recorded in the history of man- kind, and produced a lasting influence on the affairs of the Old. A Tour to the South of Frame and the Pyrenees in the year 1825. By G. A. Walker Akkott, Esq. F.R.S.E. F.L.S. M.W. S. &c. (Continued from p. 164.) vJn the 31st May we set off in the diligence for Barcelona, and, passing by Bellegarde, the frontier town of France, and La Jonquiere, that of Spain, in each of which we were visited by the customhouse officers, we slept at Girona. The fortress of Figueras Ues between this and the frontier, and was in pos- session of the French army of occupation : there we had break- fast, and saw for the first time the Catalonian mode of drink- ing. A glass jar, shaped like an urn or a coffee-pot, or, in heu of such, a small wooden barrel, is furnished with two openings : the one is wide, and placed where the handle usually is, oppo- site to the spout, wMch is long, straight, and tapered to a fine point. Through the former the liquor is poured into the ves- sel ; through the latter it is poured into the mouth. Much more cleanliness is certainly shown by drinking in this way, than that all should put their mouth to the same pot, as is done fre- quently in other countries. In Catalonia, one holds the jar as high up as he can, and, by inclining it, a continuous but slen- der stream reaches his mouth. The difficulty at first is as much 1 and the Pyrenees^ in 1825. 351 to continue to swallow, while the stream is constant, as to lead the stream to the mouth ; but sufficient address is soon acquired. The next day we arrived at Barcelona. On all the route, we took every opportunity, whether owing to bad roads, hills to ascend, or a change of horses, to get out of the diHgence, and separate to the right and left, in order to examine the vegetation of the country. Our principal success was in the woods of Granita, and along the sea- shore from Pinede to Barcelona. Between Las Caldas and La Granita, we gathered Helianthemum tuberaria, Cistus Jlorentmus, and a Euphorbia, perhaps a remarkable purplish variety of E. vet" rucosa. All the wastes there might be truly termed heaths ; for, as in Scotland, whole hills were chiefly covered with species of Erica ; and we observed E. scoparia and arborea among the number. The latter part of the road was interesting on many accounts : the number and size of the towns and villages on the coast, — the cleanness and even elegance of the dress of the pea- santry, and the general appearance of ease and health, — form a complete contrast with the universal desolation, the disgusting filth, and the degraded state of the inhabitants, that one meets in the interior. As far as regards the natural productions, the fine climate of the coast of Catalonia gives to them a vigour unknown even in the south of France. The Agave Americana planted here along the road-sides as hedge-rows, flowers at the ninth or tenth year, whereas at Perpignan it flowers so very sel- dom, as to bear the appellation of " the plant that flowers as often as an Englishman smiles.'' At the time we passed through Catalonia, the scapes of this plant were still young ; few ex- ceeded twelve or fifteen feet, and the pedicles not being deve- loped, they presented the appearance of gigantic shoots of as- paragus. In some favourable situations they were much higher, and resembled at a distance the masts of ships : they frequent- ly, I was informed, attain twenty-five or thirty feet, and all that in the course of a week or ten days. Notwithstanding this rapidity of vegetation, the scape is harder than oak, bidding defiance to the sharp edges of the strong knives we used for cutting down plants. Different species of Cactus or Indian Fig, forming thick bushes four or six feet high, displayed their splendid yellow and red blossoms in the utmost profusion : 352 Mr Arnotfs Tour to the South of' France these also serve as hedges ; the cattle do not dislike the youn^ shoots, and the old plants serve as fuel to heat the bakers' ovens. Few plants deserve so well as these the application of the Scot- tish motto, " Nemo me impune lacesset^'' as they are covered with an infinity of tufts of minute bristles, sharper than needles, and barbed backwards. The state of the fields shew that much more dependence is put on the favours of nature than on the efforts of art. The olive, the carob tree, the vines, and the corn crops, were almost always mixed so closely together, as to impress the idea, that, if any one of them afforded a good re- turn, it was owing to the strength of vegetation alone. The day after our arrival (the 2d June) was the Fete Dieu. Such peasants as were in town were all neatly dressed, and most of the men wore the red Catalonian bonnet. In the even- ing, we took our places to see the procession. As I believe this was nearly the same as in Italy, there is no occasion for me to describe it in detail. I shall merely remark, that the first that made their appearance amidst the thunder of the artillery, were two enormous puppets, representing a giant and giantess, about twelve or fifteen feet high, supported, of course, on the shoul- ders of men concealed within their dress : behind them came a man on an ass, beating a kettle-drum, and then a band of mi- litary music. This scene w^as intended to represent the flight of the pagans before the true religion. It was, however, un- happily executed, as the two figures were in no haste, but every now and then stopped, and danced for about a minute to the sound of the music. Nor do the Barcelona ladies think that these pagans are a bad sort of people, as the giantess gives out the fashion for the female dress for the ensuing twelvemonth. The streets were lined by the military, who, as well as the multitude present, fell on their knees, when the canopy containing the last symbol, that of the body and blood of our Saviour, made its appear- ance. This had certainly a fine effect, and a great show of de- votion ; but the charm was speedily broken. Scarcely was the symbol past, when all order and regularity were ended: they had seen all they wished, — confusion was the order of the day, — every one jostled his neighbour, and endeavoured to reach his home as quickly as possible. Flowers of the Spanish broom, or Spartkim Junceum, were scattered from the windows on the 2 and the Pyrenees, in 1825. S53 crowds beneath, during the whole of the procession, the mean- ing of which I did not well ascertain. We remained four days at Barcelona, during which we made two short botanical excursions. The one around Mont Jouy was very successful. We met with Lotus ornithopodioides and edulis, Atractylis cancellata^ Stachys hirta, Helianthemum hre- vipes, and some others. The Carob tree (Ceratonia siliqua), which at Montpellier is almost a green-house plant, grows here to an enormous size : it was now in fruit. On Mont Jouy it- self, I observed several curious lizards, particularly the Gecko fascicularls: this animal is supposed, with some reason, to be what is translated '' Spider" in the Old Testament (Prov. xxx. S8.) ; and it is somewhat worthy of remark, that its Italian name Tarantala, is that also of the large poisonous spider. Our second excursion was of less consequence : we merely traversed the cultivated grounds towards Sarria. We, however, observed Cyperus rotundus, Lactuca tenerrima, and Anthyllis tetraphyllis, in tolerable abundance. All the fields of beans round Barcelona, and I believe I may say the same in general terms of Catalonia, were infested with the Orohanche pruinosa*^ Lapeyr. A yellow species also grows on them, but more spa- ringly, and appears to be a mere variety of the other. Schismus marginatus grew plentifully on the ramparts of the town. The limits we were obliged to place to our residence in this part of the country, prevented us from visiting Mont Serrat* This mountain, however curious on many accounts, ought to be examined by every botanist who goes to Barcelona: three or four days additional wiU suffice. From what I could learn, it would be no imprudent plan previously to insure his life, as the mountain, during the Spanish troubles, has been made the head-quarters of some bands of banditti, who know how to put in practice the adage, that " dead men tell no tales." Should one feel no inclination to go there, or have but a day or two to ^end at Barcelona, the most proper places for botanizing are along the coast : the interior being always in cultivation, must be less rich in indigenous plants. • Is not this the same with O. crenata, Forsk. ? JULY SEPTEMBER 1827. Z 354 Mr Arnotfs Tour to the South of France Barcelona is situated in the midst of an extensive cultivated plain ; scarcely does there appear an elevation higher than the walls any where in it, excepting the fortress of Mont Jouy, wliich rises up steep on all sides close to the town. This plain is bounded by a range of hills on the north, west and south, at about five or ten miles distance. There are some fine public walks within the walls ; but the principal one is the Rambla, similar to the Boulevards at Paris, and is every evening cover- ed from seven or eight until ten o'clock by beaux and belles, who come there to enjoy the cool air, after the heat of the day. The houses are neat, built of stone or brick, and painted over a brown smoky colour, on which is delineated fi- gures of people, or other devices. The town is stored with churches and monasteries ; and there are, I believe, six colleges, and as many hospitals, in one of which there is a cabinet of na- tural history. The Custom-house has a facade of stucco, in imitation of marble, and is a very fine building ; but the Ex- change is much more magnificent, the balusters and rail of the staircase being of finely polished marble. In an upper room was an exhibition of paintings, chiefly done by the students, but scarcely worth the seeing. There was here exposed a draw- ing of a plant that has hung suspended from a wire out of a window for several years, without receiving any nourishment but what it receives from the atmosphere : it bore the name of Amalia aerisincola. Barcelona possesses a small botanical garden, to which is at- tached a professorship, occupied at present by Dr Bahi (after whom Lagasca has named his genus Bahia), an able physician^ and newly returned to Barcelona, after three years of persecution that he has suffered under the different governments that have succeeded each other in Spain, Having been the first to declare that the disease that made here such ravages in 1822 was the yellow fever, he drew upon himself the enmity of the merchants of every class, who saw that their projects were to be injured by the measures taken to prevent contagion. Accused of ser- vility under the constitutional regime, and of Uberalism under the present government, he was obliged to conceal himself for a long time among the mountains in the interior ; and it was but lately he obtained permission to return to Barcelona, to recommence his and the Pyrenees, in 1825. 3^ profession. The garden, which has neither enjoyed the advan- tages of a zealous botanist nor of a grant of money to defray the expences, has been almost allowed to go to wreck during the po- litical dissensions ; the wages even of the gardener not having been paid for two or three years. Scarcely does there remain five hun- dred species ; but among these are the Schiniis molle, Varronia alnifbUa, CcBsalpinia sappan, Acacia longifolia and horrida, Phy~ satis aristata, and some other species cultivated in our hot-houses, scarcely above the rank of shrubs, but which here in the open air attained a considerable magnitude *. We saw here the Amalia aerisincola : it has hung out of the window, we were informed, for fifteen or twenty years, and still bears its flowers every summer. We advised Dr Bahi to put it in earth for a; season, as by that means it would become much stronger, and * In this garden we met with Helianthemum croceum of Dunal and Lagas- ca. As this species is much confused with //. glaucum^ perhaps the following observations, made, in December 1825, with Professor De Gandolle's permis- sion, on his herbarium, may be of use. 1. In this herbarium there is a spe- cimen of H. glaucum from Lagasca, with the note " Cistus glaucus^ Cav. Ic 3, t. 261, absque dubio, collatum cum specimine originali," presented to M. De- candolle in 1819 : This specimen has the calyx almost woolly; the hairs are white, and not very rigid, and are distributed almost entirely on the some- what prominent nerves : this was recognised by Dunal as his var. «. — 2. The var. /3. of Dunal differs solely by the hairs on the nerves of the calyx being very rigid, or rather hispid. In both these varieties the leaves are well de- scribed in the " Prodromus." — 3. H. croceum^ Desf. Two specimens of this exist in Professor De Gandolle's horbarium, both given by Desfontaines, and these shew that the figure in the " Flora Atlantica" is by no means correct. The calyx is in reality furnished with long hispid hairs on the very promi- nent nerves ; moreover, the whole calyx and the hairs are of a brownish-yel- low colour : the upper leaves are broadly lanceolate, and somewhat acute : the fruit is pubescent, as in H. glaucum. The H. croceum^ Desf. I therefore consider a mere variety of H. glaucum^ Cav. As a variety, however, it is dis- tinguished from the two mentioned by Dunal, by the colour of the calyx and the hairs of it, as well as by the yellowish hue of the whole plant, and the croceorus petals. — 4. H. croceum^ Dun. in De Gandolle's Prodromus, is another question. Though pretty well represented by the figure in the " Flora At- lantica," it neitlier agrees with the above mentioned specimen given by Des- fontaines of his H. croceum^ nor with his description. The calyx is, as Dunal describes it, hoary and pubescent, but not hispid : it is the H. croceum given by Lagasca to De GandoUe, and is apparently, from the localities attached, extremely common in the South of Spain. The specimens we gathered in the garden of Barcelona had the petals yellow, and not of a saffron colour, as the name imports. x2 356 Mr Christie on the Tlteori^ of the suffer dividing at the root; but he was determined it should support the specific name he had conferred on it. It appears to be a TiUandsia from South America : the flowers are blue, and it is probably a described species. No chmate in Europe is more healthy, and more equal than that of Barcelona ; none so well adapted for the establishment of a botanic garden on a grand scale, if the government of that unfortunate and degraded coun- try were of a nature to permit a distinguished botanist to exer- cise there his talents, or had sufficient liberality to give him the necessary funds for such a purpose. (To be continued.) On the Theory of the Diurnal Variation of the Needle. By S. H. Christie, Esq. F. R. S.* jSjLVi Christie having been led to doubt the validity of the moving easterly variation adopted by Canton, but, at the same time, having observed that the changes in direction and inten- sity appear always to have reference to the position of tlie sun, with regard to the magnetic meridian, was led to connect these phenomena with Professor Seebeck''s discovery of thermo-mag- netism, and Professor Cumming's subsequent experiments ; and to refer the phenomena of diurnal variation to the effect of par- tial heating, modified, perhaps, by- that of rotation, and by pe- culiar influence in the sun''s rays. In support of this opinion, he cites passages from papers by Professor Cumming and Dr Trail, who appear to have been impressed with a similar idea. But in place of looking to the stony strata of which the earth's surface consists, as the elements of the thermo-magnetic apparatus which this doctrine requires, the author regards them as rather consisting of th^ atmosphere, and the surfaces of land and water with which it is in contact. Thermo-magnetic phenomena, he remarks, have hitherto only been observed -in metallic combinations; but this may be owing merely to the small scale on which our experiments are con- ducted. • The above is a brief account of an interesting memoir read lately before the Royal Society of London. Diurnal Variation of the Needle. 357 To put to the test of experiment whether thermo-magnetism could be excited when the surfaces of two metals, instead of touching at one point, were in symmetrical contact throughout, the author first employed a compound ring of bismuth and cop- per, the copper outwards ; and he found, that, to whatever point heat was applied, magnetic powers were developed ; a needle be- ing affected differently according to the different positions in which the ring was placed with regard to it. After a lapse of two years from this first experiment, the author resumed the in- quiry with an apparatus consisting of a flat ring of copper, ha- ving its inner circumferences grooved and united firmly, by sol- dering and fusion, to a plate of bismuth, cast within it ; the whole forming a circular plate, twelve inches in diameter, weigh- ing 119 ounces Troy, which was made to revolve in its own plane. Heat was appUed by a lamp to a given point in the circum- ference of this plate, and a delicately suspended needle partly neutralized, was placed near it, and the deviations observed in all positions of the heated point, which was made to revolve, the lamp being withdrawn. These experiments led him to conclude, that the effect of so heating a portion of the circumference, was to create a temporary polarity in the plate, the law of which he explains. He then details a set of experiments, by which he was convinced, that a uniformity of action obtained to whatever part of the circumference the heat was applied. He next instituted a series of observations for determining the laws which govern the magnetic phenomena, resulting from the application of heat as above described ; the results of which are stated in the form of tables. Four poles appear to be produced, two north and two south, the two north both lying in one semicircle, and the south in the other, but not in alternate quadrants, and all of them lying rather nearer to the center than the line of junction of the two metals. The experiments were pursued in a variety of positions of the plate, with respect to the meridian and horizon, and with a similar general result. From these experiments the author concludes, that uniformity of junction of the two surfaces of a thermo-magnetic combination, is no obstacle to the developement of transient polarity. Re- 358 Mr Christie on the Theory of the garding the earth and its atmosphere as such a combination, and limiting our views to the intertropical zone alone, we should have two magnetic poles produced on the northern, and two on the southern sides of the Equator, the poles of opposite names being diametrically opposite to each other. To apply this to the earth, it is necessary to know the times of greatest heat in the twenty-four hours : this may be assumed at three o'clock in the afternoon. The apparatus used by the author not affording, when adjusted to the latitude of the place, sufficient magnetic power to render the effects distinct, he sub- stituted for it artificial imitation, consisting of two magnets, six inches long, so placed with respect to a revolving axis parallel to the axis of the earth, as to imitate the position of the poles pro- duced by thermo-magnetism in his plate, and making the appa- ratus revolve round this axis, he noticed the deviations produced thereby on a compass, placed horizontally over it. These de- viations he then compares at length, with those actually observed, 1,5^, by Lieutenant Hood, in 1821, at Fort Enterprize, lat. 64° 28' N. ; Mly^ by Canton, in London, in 1759 ; 3 J/?/, by Lieu- tenant Foster, at Port Bowen, in 1825 ; ^:thly^ by Colonel Beau- foy, on Bushy Heath, in 1820. The results of this compari- son are, on the whole, generally such as to indicate a conformity between the hypothesis and fact, with the exception of some de- viations from the exact times of maximum and minimum varia- tion, which could not but be expected. The author then considers the manner in which the distribu- tion of land and sea over the globe modifies the point of greatest heat, and, in consequence, the place of the diurnal poles. He next observes, that, at the commencement of the experiments, he had no idea of being able to reduce the deviations of the needle to so simple a law as that resulting from a polarity, in a parti- cular direction, communicated to the plate ; but that he consi- dered it of the greatest consequence to ascertain whether the de- viations on the outer edge of his plate had the same general cha- racter with those within, at the time of junction of the metals ; since these situations of the needle would correspond to great elevations in the atmosphere, and points near the earth's surface respectively, the character of the deviations turns out to be the same in both cases, so that, in this respect^ the hypothesis, so far as is known, agrees with observation. Diurnal Variation of the Needle. 369 One general effect of some experiments, with a hollow copper shell filled with bismuth, afforded a striking correspondence with nature. The whole equator being heated, and one part more than the rest, he uniformly found that the elevated pole being towards the north, the north end of the needle deviated when the place of heat was on the meridian above the horizon, and south when below, which is precisely the character of the diur- nal variation in north latitudes. Accotmt of Mr CraivforcTs Mission to Ava. v^tJR friend, and former pupil, the distinguished author of the History of the Indian Archipelago, Mr Crawford, was some time ago sent by the Governor-General of India, as envoy to the court of Ava. The following account of the mission, from the Calcutta Government Gazette of 1st March last, we are confi- dent, will be read with interest by the general reader^ and also by the natural historian. '• The mission left Rangoon on the 1st September, and reached Henzada on the 8th. Here we were received with much polite attention by the future Viceroy of Pegu, who has the rank of a wiingyi, or counsellor, the highest enjoyed by a subject. He was very solicitous, however, to prevent our going further, intimating that he was himself vested with full powers to treat with us upon every possible subject. '' He had no opportunity, however, of exercising his plenipotentiary powers upon the present occasion, for the mission, disregarding his pretensions,^ on the afternoon of the 10th quitted Henzada, and on the afternoon of the 14th, a few miles beyond Myanaong, or Loonzay, entered the hilly region, which is the proper geographical boundary of the Burman race — all to the south being the Delta, or deboucliement of the Irawadi, and the true country of the Pe- guans or Talains. " Pursuing our journey with hills now pressing down to the river on both sides, and which struck us at the time as peculiarly picturesque and beautiful, after passing through the long tiresome champain of the Delta of the Irawadi, we reached Prome on the evening of the 15th. This is one of the largest towns in the Burman empire, and appeared to be not less populous than Ran« goon. The inhabitants, since the war, had returned to their homes — the place was in a good measure restored, and although it had been long the head-quar- ters of the British army, there was now no re-action or persecution. All this bore favourable testimony to the moderation of the Myowun, or governor, Avhom we found an extremely respectable man. " We left Prome on the 17 th, and on the 20th reached Patnagoh and Mel- loon, the scene of the conferences in December 1825, which led to the first 360 Mr Crawford*s Account of the Mission to Ava. treaty, which was never ratified, or even transmitted for ratification, a breach of engagement for which the Burmese received signal castigation on the spot. " On the 21st we left those places, and on the 22d reached Renangyoung, or the ' Fetid Oil-brooks,* — in other words, the Petroleum Wells. In the af. ternoon we visited the wells, and the remarkable and sterile country which surrounds them, abounding every where with fossil remains of one of the last great changes which the globe has undergone. " On the 23d we left Renangyoung, and tn the course of the forenoon passed Senbegyoung, from which leads the best road from Aracan, and by which Major Ross and a battalion of sepoys proceeded in the month of March last*. " On the morning of the 24th we reached Pugan, and staid there for that day, and part of the following, examining the curious antiquities of this place, the most remarkable in the Burman dominions, and the extensive ruins of which, if such evidence were not too well known to be delusory, might lead to the supposition, that in former ages the Burmese were a people more power- ful and civilized than we now find them. " On the 27th we passed the confluence of the Kyendween and the Irawadi. The prospect afforded by their junction is Jar from imposing. Both rivers are here confined to a narrow bed, and the tongue of land which divides them is so low, and covered with reeds, that it may easily be mistaken for an island, and consequently the smaller river to be only a branch of the larger. " The prospect hitherto presented, in a route little less than 400 miles, was that of a country imperfectly cultivated and inhabited, and by far the greatest part of which was covered with a deep forest, or with tall reeds and grass, among which there was scarcely any evidence of culture or occupation. We were now, however, within 50 miles of the capital, and the scene began greatly to improve : the country became level, the nearest ranges of hills to the east being at least 30 miles distant, and the Aracan mountains, to the west, not less than 50 in the nearest part, and 60 or 70 in the distant. The villages and cultivation had increased considerably ; but neither here nor any where else did we see evidence of a dense population or active industry. " At two o'clock in the afternoon we passed Yandabu, where the treaty was dictated to the Burmans, and sailed within a stone's throw of the great tree where Sir A. Campbell's tent was pitched, and the conferences were held. " On the afternoon of the 28th we reached Rapatong, a village on the east bank of the river: this was the spot at which the Burmese contemplated making their last effort, had the British army not been arrested in its pro- gress by the treaty of Yandabu. Here they were encamped, under the old chief Kaulen Mengyi, the whole disposable force not exceeding 1000 men, and the greater number of these consisting, not of soldiers, but of the personal retainers and menial servants of the chiefs. Two forced marches would have carried Sir A. Campbell to Ava, on a good high road, with nothing to resist him but the dispirited fugitives just mentioned. In the evening we reached Kyaktalon, twelve miles from Ava. A short way before coming to that place, a deputation, headed by a secretary of the Lotoo, met us, to compliment us on our arrival, and usher us into the capital. *' On the morning of the 29th we left Kyaktalon. After we had proceeded ♦ Sec an account of this journey Atiat, Journ. vol. xxiii. p. U. Mr Crawford's Account of the Mission to Ava. 361 a few miles, an order from the court arrived, requesting that we might stop where we were, as it was the intention to send down a deputation of persons of superior rank to conduct us. The promised deputation, consisting of a woonduck and three saredaugyis *, accordingly came, and on the morning of the 30th we arrived at the capital, anchoring about two miles below the city, opposite to the place appointed for our temporary residence. Thousands flocked down to the bank of the river, out of curiosity to see the steam-vessel. A similar curiosity was displayed every where else on our journey, nearly the whole population of towns and villages turning out to see her. " On landing, we were received with ceremonious politeness by a Wungyi and Atwenwun, the two highest classes of officers under the Burmese govern- ment. These were the individuals who had negociated and signed the treaty of Yandabu. The politeness which dictated the selection of these two indivi- duals was obvious. " Our audience, under various pretexts, was put off from day to day, until the 21st of October. In the mean while we were treated with attention. The expences of the whole, mission were paid, and we were put under no other constraint than that of not being permitted to enter the walls of the town, a liberty which would have been contrary to established etiquette. Meanwhile the negociation had commenced, and on the 13th, 14th, and 15th, we were present, by special invitation, at the annual display of boat races, which take place yearly, when the waters of the Irawadi begin to fall. The King and Queen, with the princes and nobility, were all present. The splendour of this pageant far exceeded our expectation, and would have made a figure in the Arabian Nights' Entertainments, as one oi' the good things got up by virtue of Aladdin's Lamp. " The period chosen for our presentation was that of one of the annual fes- tivals, when the tributaries, princes, and nobility, offer presents to his Majes- ty, and their wives to the Queen. " Boats were sent for our accommodation, and about 10 o'clock in the fore- noon we reached the front of the palace. An elephant was appropriated to each of the English gentlemen, and the procession moved on, until arriving at the Ring-dau, or hall of justice, which is to the east side of the palace, where we were detained for nearly three hours, to afford us an opportunity of admiring the pomp and magnificence of the Burmese court, but, above all, to afford the court an opportunity of displaying it. " At that place the whole court, with the exception of his Majesty, passed in review before us, beginning with the officers of lowest rank, and ending with the princes of the blood. The courtiers were in their dresses of cere- mony, and each chief was accompanied by a numerous retinue, besides ele- phants and horses. The retainers of Menzagyi, the Queen's brother, the most powerful chief about the court, could not have been fewer than 300. " We were at length summoned into the royal presence. The etiquette in- sisted upon with Colonel Symes seemed not to have escaped the recollection of the Burman officers, and they would have us to practise the same ceremo- nies he had been necessitated to submit to ; but times had changed. These ceremonies consisted in making repeated obeisances to the walls of the palace, ♦ Principal secretaries. 368 Mr Crawford's Account of the Mission to Ava. and in walking barefooted, or at least without shoes, across the court-yard. All this we peremptorily refused, although the officers who led the procession shewed us a very good example, in prostrating themselves repeatedly, by throwing their bodies upon the bare ground. Upon reaching the bottom of the stairs, leading to the hall of audience, we voluntarily took off our shoes, passed through the long hall, and seated ourselves in front of the throne. His Majesty did not keep us long waiting. After a hymn had been chaunted by a band of brahmins in white, he made his appearance, upon the opening of a fold- ing door behind the throne, and mounted the steps which led to the latter briskly. He was in his richest dress of state, wore a crown, and held in his hand the tail of a Thibet cow, which is one of the Burman regalia, and takes the place of a sceptre. " He was no sooner seated than her Majesty, who, whether on public or pri- vate occasions, is inseparable from him, presented herself in a dress equally rich with his, and more fantastic. Both had on a load of rich jewels. She seated herself on his Majesty's right hand. She was immediately followed by the Princess, their only child, a girl about five years of age. Upon the appearance of the King and Queen, the courtiers humbly prostrated them- selves. The English gentlemen made a bow to each, touching the forehead with the right hand. The first thing done was to read a list of certain offer- ings made by the King to some temples of celebrity at the capital. The rea- son for doing this Avas assigned. The temples in question were said to con- tain relics of Guatama, to be representatives of his divinity, and therefore fit objects of worship. His Majesty having thus discharged his religious obli- gations, received, in his turn, the devotions and homage of the princes and chiefs. " The King did not address a word in person to the officers of the mission, but an atwenwoon, or privy -councillor, read a short list of questions, as if com., ing from the King. These, as far as I can recollect, were as follows : — " ' Are the King and Queen of England, their sons and daughters, and all the nobility of the kingdom, well ? " ' Have the seasons been of late years propitious in England ? " ' How long have you been on your voyage from India to this place ?' &c. Betel, tobacco, and pickled tea, were after this presented to the English gentlemen ; a mark of attention shewn to no one else. They afterwards re- ceived each a small ruby, a silk dress, and some *lackered boxes. This being over, and a few titles bestowed and proclaimed throughout the hall, the King and Queen retired, the courtiers prostrating themselves as when they entered. Their Majesties had sat in all about three-quarters of an hour. The Burman court, upon the present occasion, appeared in all the pomp and splendour of which it is capable, ar*d the spectacle was certainly not a little imposing. The princes and nobility were in their court dresses, of purple velvet, with a pro- fusion of lace and gold. The hall of audience is a gorgeous and elegant apart- ment, supported by ninety-six pillars, and the whole is one blaze of rich gilding. " In going through the court-yard, the white elephant and some other royal curiosities were shewn to us, and we stopped for a moment to see an exhibi- tion of tumblers, buffoons, and dancing girls. Mr Crawford's Accoimt of the Mission to Ava. 36S '* After the audience, the gentlemen of the mission were occupied for seve- ral successive days in paying visits to the heir apparent, the Prince of Sarra- wadi, the Dowager Queen, and the Queen's brother. By all these person- ages they were received with marked politeness and attention. The ladies presented themselves on these occasions as well as the men. There was no reserve in respect to the fair sex. " The negotiation was then renewed, and on the 23d of November, besides settling some points respecting frontiers, a short treaty of commerce of four articles was concluded. " The mission continued at the Burman capital in all about two months and a half, and quitted it on the 12th of December, after being honoured with two audiences of his Majesty ; the one on occasion of catching a wild elephant, and the other on that of weaning a young one, favourite diversions of the King. On the occasions in question, his Majesty threw off all reserve, and conversed freely and familiarly with our countrymen. On the day of depar- ture, presents were sent for the governor-general, and each of the English gentlemen received a title of nobility. " The Irawadi, which, swollen by the periodical rains, was deep and broad in coming up, was found in descending to have fallen from twenty to thirty feet ; and the navigation consequently proved extremely intricate and tedi- ous. The steam-vessel was in all aground fifteen days, and frequently ran the risk of being totally lost. The voyage to Rangoon occupied thirty-five days, which, in a small boat suited for the river, ought to have been performed in ten. At Pugan, about eighty miles below Ava, the mission was for the first time informed of the insurrection of the Talains. At Henzada and Donabew the inhabitants were seen fiying from the seat of insurrection. The insur- gents were first seen at Paulango This place, where the river is not above sixty yards broad, was strongly stockaded in three places, and the Talains were seen standing to their arms. The steam-vessel came-to for a few mo- ments to request a safe passage for the baggage and boats which were behind,^ and for the boats of some merchants which accompanied them, amounting in all to about twenty-two. Boats put off immediately, and the Talains came on board without the least hesitation. They were full of friendly professions, and requested only our neutrality. Our visitors saluted us in the manner of English sepoys, standing up. This, they said, was the positive order of his Talain Majesty, who declared he would permit no one henceforth to crouch in his presence, or that of any other chief. They also boasted that they treat- ed their prisoners after the English fashion, that is to say, disarmed them and set them at liberty, without offering them any personal violence. They claimed the greater merit for this, on account of the conduct observed by tjie Burmans towards them, who, they alleged, put all their prisoners to death, or, as they expressed it, ' divided them into three parts.' " On the morning of the 17th the mission reached Rangoon. The Burman flag was seen flying on one side of the river, and the Talain on the other, not 600 yards asunder. The town of Rangoon was invested on all sides by the Talains, and the suburbs had been burnt to the ground. We had hardly been at anchor half an hour, and were engaged in reading our letters and news- papers, when the garrison made a sortie, and an action took place, reckoned 364 Mr Crawford's Account of' the Mission to Ava. the most considerable since the commencement of the insurrection. On both sides it was paltry and contemptible to the last degree. The Talains, in one place, caught sleeping or cooking, fled to their boats, and were soon seen cross- ing the river in great numbers. At another post, between the town and the great pagoda, they were more vigilant, and easily repulsed a feeble and cow- ardly attack made by the Burmans. " On the 23d the mission left Rangoon, and in less than four and twenty hours reached the new settlement of Amherst, in the harbour of which we found lying the Company's ships. Investigator and Ternate, and a large fleet of gun-boats. To these in a few days were added the large merchant ships Al- morah, Felicitas, and Bombay Merchant^ with two trading brigs and some schooners. This was a curious spectacle, in a harbour which was not known to exist ten months ago. The settlement contains from 1,600 to 1,700 inha- bitants. Maulemhyeng, the military cantonment, twenty-seven miles further up the river, contains twice this number, chiefly camp followers. Neither of them had a single inhabitant a few months back, but, on the contrary, were covered with a thick forest. This fine country already produces some of the necessaries and comforts of European life, in a degree which, under all circum- stances, is remarkable. Fowls are to be had in abundance for five rupees per dozen ; a milch buffalo and calf for fifteen rupees : fish is in abundance, and of excellent quality : the best kinds are the calcop, the large mullet, and the mangoe-fish. It is curious that this last is found in plenty, both in the rivers of Rangoon and of Marttban, with roes, for nine months of the year, or from December to August inclusive ; whereas in the Hooghly, three months is the utmost limit of their season. " On the 26th, the mission proceeded to Maulemhyeng, and on the 28th ascended the Ataran river in the steam- vessel. This stream, which is deep and free from danger, might be navigated for fifty miles up by vessels of 300 to 400 tons burthen. It leads to teak forests, distant about seventy-five miles, inexhaustible in quantity, and of the largest scantling. " On the 8th of February, the ship Bombay Merchant having been taken up for the accommodation of the mission, the members embarked that evening, and on the following morning sailed for Calcutta. " The following is a very brief sketch of what has been observed by the mission in the department or science of statistics. In the departments of mi- neralogy and geology, it is to be regretted, that no scientific observer accom- panied the mission. Our party, however, were assiduous collectors, and the collection brought back is so extensive, that it would afford men of science a very tolerable notion of the mineralogical and geological constitution of the countries .which were visited. From between the latitude of 15° and 16°, to between that of 18° and 19°, is a low alluvial country, forming the debouche- ment of the Irawadi river. Here not a mountain or a stone is to be found, ex- cept in a very few places, such as Rangoon and Syriam, where a little cellular clay iron-ore presents itself in low hills. In about lat. 18° 30' we quit the Delta of the Irawadi, the native country of the Talain race, and enter at once into a hilly region, which extends almost all the way to Ava, or to about the lat. of 21° 50'. The Irawadi, in all this course, is skirted by hills of from about 300 to 500. feet high. The lowest portion of these is composed of Mr Crawford's Account of the Mission to Ava. 365 breccia, calcareous sandstone, cellular clay iron-ore, with beds of sand and clay ; and the highest of blue mountain limestone. The lowest portions are alluvial, and highly interesting to the geologist. The gentlemen of the mis- sion discovered in these abundance of sea-shells, with fossil wood and bones. Among the latter are the bones of the fossil elephant, or mammoth, fossil rhi- noceros, various ruminant animals, alligators, and tortoises. An immense collection of these has been brought round for the government. Some of the bones are of great size, and all completely petrified. There are among them the teeth, and such other portions of the skeleton as will enable the expe- rienced naturalist to determine the genera and species to which they be- longed. These were obtained close to the celebrated petroleum wells. From their great induration, and having been little rolled, they are, generally, in a very perfect state. The bones, as well as the fossil-wood, are found superfi- cially in gravel, the same situation in which similar diluvian or antediluvian remains have been found in other quarters of the globe. " The ranges of mountains to the E. and N. of Ava, as far as twenty miles, and those close to the city, on the western bank of the river, are all of mar- ble, and this of many varieties. The white statuary marble, some of which is very beautiful, is brought forty miles down the river, from a mountain on its eastern bank. " The great ranges of mountains, dividing the Burman dominions from Arracan on one side, and Siam on another, are reasonably supposed to l)e pri- mitive. In the last direction, the roots of these seem to extend to the new settlement of Amherst, where we find granite, quartz, and mica slate. Some continuous low ranges, in the Martaban district, are composed entirely of quartz rock. Blue mountain limestone is a frequent formation in the same district, from which lime of much purity is manufactured. Detached rocks of this substance are scattered over the plains. These rise abruptly and perpen- dicularly to the height of from 300 to 500 feet, and in one place to 1,500. They contain some spacious caves, which have been converted into places of worship. One of these rocks is so remarkable, that it deserves particular men- tion. Its perpendicular wall confines the Ataran for several hundred yards on its right bank. About its m»lddle it is penetrated by a branch of the river, which flows quite through it by a magnificent arch. This is a highly pictu- resque object. Neither the proper Burman nor Talain country appears to be rich in metallic ores, with the exception of those of iron, tin, and antimony. The principal consumption of the country in iron is supplied from the great mountain of •Poupa, on the eastern side of the Irawadi, and near the latitude of 2F. Lao, the country of the Shans, as it is denominated by the Burmans, is on the contrary, extremely prolific in metals. The singular passion of the Burmans for the study of alchemy, has brought collections of the ores of Lao into the market of Ava, and this circumstance enabled the gentlemen to make collec- tions of them. The ores thus obtained consisted of those of iron, silver, lea^J, copper, and antimony. The Shans possess the art of smelting all these, and bring them in their metallic state into the market of Ava. The silver ores in the Burman dominions are, however, wrought to the greatest advantage by the Chinese. The mines exist about twelve days' journey to the NE. of Ba- moo, towards the Chinese frontier. 366 Mr Crawford''s Account qftJie Mission to Ava. " The celebrated sapphire and ruby mines which have always afforded, and still continue to afford, the finest gems of this description in the world, are above five days' journey from Ava, in a direction ESE., and at two places called Mo-gaot and Kyat-pyan. The different varieties of sapphire, both in their crystallized and rough state, and the matrix, or rather gravel, in which they are found, were seen, examined, and collections made. In these mines are found the following gems or stones : the red sapphire or oriental ruby, the oriental sapphire, the white, the yellow, the green, the opalescent, the ame- thyst and girasol sapphires, the spinel ruby, and the common corundum, or adamantine spar, in large quantities. " The oriental ruby, perfect in regard to water, colour, and freedom from flaws, is scarce and high-priced even at Ava. The blue sapphire is more com- mon, a;nd cheaper ; one specimen exhibited to us weighed 951 carats, but it was not perfect. The red sapphire neX'^er approached this magnitude. The other varieties are all rare, and not much esteemed by the Burmans, with the exception of the girasol sapphire, of which we saw two or three very fine spe- cimens, and the green sapphire or oriental emerald, which is very rare. The king makes claim to every ruby or sapphire beyond 100 ticals value ; but the claim is one not easy to enforce. The miners, to avoid this sage law, break the stones when they find them, so that each fragment may not exceed the prescribed value. His Majesty last year got but one large ruby ; this weighed about 140 grains avoirdupois, and was considered a remarkable stone. Sap- phires and rubies form a considerable article of the exports of the Chinese, who are the cleverest people in the world in evading the absurd fiscal laws made by themselves and others. The use they put them to is that of deco- rating the caps of their mandarins, or nobility. Precious serpentine is another product of the Burman empire, which the Chinese export to a larger value. " The gentlemen of the misvsion examined carefully the celebrated Petro« leum Wells, near which they remained for eight days, owing to the accident of the steam-vessel taking the ground in their vicinity. Some of the wells are from 37 to 53 fathoms in depth, and are said to yield at an average daily from 130 to 185 gallons of the earth- oil. The wells are scattered over an area of . about sixteen square miles. The wells are private property, the owners pay- ing a tax of five pisr cent, of the produce to the state. " This commodity is almost universally used by the Burmans as lamp-oil. Its price on the spot does not, on an average, exceed from 5d. to 7|d. per cwt. The other useful mineral or saline productions of the Burman empire are coal, saltpetre, soda, and culinary salt. One of the lakes affording the latter, which is within six or seven miles of the capital, was examined by the gentlemen of the mission. " The success of the mission has been the completest in the department of botany. This will readily occur to readers when they recollect the talent, zeal, industry, and skill of the gentleman at the head of this branch of in- quiry. Dr Wallich has been left behind at Amherst, to complete his inquiry into the resources of the valuable forests of that and the neighbouring dis- tricts. Until this be effected, the full extent of his successful researches can- not be known. The number of species collected by him amounted, when the mission left him at Amherst, to about 16,000, of which 600 and upwards are Mr Crawford's Account of the Mission to Jva. 367 new and undescribed. Among these last may be mentioned seven species of oak, two species of walnuts, a rose, three willows, a raspberry, and a pear ; several plants discovered by him are so remarkable, as to constitute them- selves new genera. Among the latter may be mentioned one which has been called Amherstia^ in compliment to the Lady Amherst. This constitutes, pro- bably, the most beautiful and noble plant of the Indian Flora. Two trees of it only are known to exist, and these are found in the gardens of a monastery on the banks of the Salwen. The number of specimens brought to Calcutta amount to little less than 18,000, among which are many beautiful live plants for the Botanical Garden, chiefly of the orchideous, scitamineous, and lilia- ceous families. Dr Wallich, when at Ava, obtained permission of the Bur- mese government to prosecute his botanical researches on the mountains about twenty miles from Ava. In these, which are from 3000 to 4000 feet high, he spent eight days, and brought from them some of the finest parts of his collection. These mountains contain several plants which are common to them with the Himalaya chain, but the greater part of their Flora is rare and curious. The botany of the new provinces to the south is considered to be highly novel and interesting, combining, in a great degree, the characters of the Floras of continental India and the Malayan countries. " In economical botany a good deal has been effected. The tree producing the celebrated varnish has been discovered and described, and the process of extracting and using the varnish observed. The different mimosas producing catechu have also been determined, and the processes for extracting the drug observed. The localities of the different teak forests throughout the Burman empire, as well as the quality and price of the timber, have been ascertained. The valuable forests of this tree, discovered in our recent cessions, were upon the point of being minutely explored by Dr Wallich. Lieut. Scotland^ under the instructions of Sir A. Campbell, had, just before the arrival of the mission at Amherst, made a journey by land to the Siamese frontier, in the course of which he passed through two teak forests, towards the source of the Ataran river. The largest of these was five miles in breadth, and scarcely contained any other tree than teak, many of which measured from eighteen to nineteen feet in circumference. " One of the oaks already mentioned, and which grows to a large size, is found in great abundance, close to the new settlement of Amherst ; and should it prove a valuable timber, which is most probable, it may be obtained with every facility. A fine durable timber, called by the Burmans thingan, and Avhich they place next to the teak, or almost on an equality with it, is found every where throughout the new provinces. Dr Wallich has ascertained this to be the Hopea odorata of Roxburgh. Another valuable timber, the Uses of which are well known in our Indian arsenals and timber yards, the soondree, Herietera robusta, is found largely in the maritime parts of the Martaban dis- trict, and of a size much exceeding what is brought from the Sunderbunds of the Ganges. Of these woods, and many others in use amongst the natives^ although as yet unknown to us, specimens will be brought to Bengal by Dr Wallich, for the purpose of subjecting their qualities to rigid experiment. " In the department of zoology, if we except the fossil bones already de- scribed, the inquiries of the gentlemen of the mission have not been so sue- 368 Mr Crawford's Account of the Missum to Avd. cessful. The features of the animal kingdom, indeed, differ much less from those of Hindostan than the vegetable. Still there is, no doubt, much room for discovery, when the countries are leisurely explored by experienced natu- ralists. In the Martaban provinces, the forests of which teem with the ele- phant, the rhinoceros, the wild baffalop, ox, and deer, a new species of the latter is believed to exist. In the upper provinces a species of mole-rat is very frequent, and thought to be an undescribed animal. Some of the officers of our army imagined that they had ascertained the existence of the jackall and fox in the upper provinces of the Burman empire, but this seems to be a mis- take. It is a singular fact, that neither these animals, nor the wolf, hyena, nor any other of the genus canis is found there, with the exception of one animal, which is yet undescribed, and the howl of which it was that was mistaken for that of the jackall. The feline tribe, especially the larger species, are but rare in the upper provinces of the Burman empire, but too frequent in the lower. The night before we left Maulamhyeng, a tiger was shot in the heart of the cantonment, by a party of officers who lay in wait fur him. Two or three of the smaller species of this family, found in Martaban and Pegu, are thought to be as yet unknown to naturalists. In Martaban, two new species of pheasant have been found, of which living specimens have been sent to Cal- cutta. The celebrated elephant must not be forgotten. At Ava there is but one Albino elephant ; this, a male of about twenty-five years of age, was re- peatedly seen and examined by the gentlemen of the mission ; and his Ma- jesty has made a present to the Governor-General of a drawing of the animal in its state caparison, which is no bad specimen of Burman art. " As connected with this department, may be mentioned the existence at Ava of a man covered from head to foot with hair, whose history is not less remarkable than that of the celebrated porcupine man, who excited so much curiosity in England, and other parts of Europe, near a century ago. The hair on the face of this singular being, the ears included, is shaggy, and about eight inches long. On the breast and shoulders it is from four to five. It is singular that the teeth of this individual are defective in number, the molares, or finders, being entirely wanting. This person is a native of the Shan coun- try or Lao, and from the banks of the upper portion of the Saluen or Marta* ban river : he was presented to the King of Ava, as a curiosity, by the prince of that country. At Ava he married a pretty Burmese woman, by whom he has two daughters ; the eldest resembles her mother, the youngest is covered with hair like her father, only that it is white or fair, whereas his is now brown or black, having, however, been fair when a child, like that of the infant. With the exceptions mentioned, both the father and his child are perfectly well- formed, and indeed, for the Burman race, rather handsome. The whole family were sent by the King to the residence of the mission, where drawings and descriptions of them were taken. Albinos occur, now and then, among the Burmese, as among other races of men. We saw two examples ; one of these, a young man of twenty, was born of Burmese parents. They were ashamed of him, and considering him little better than a European, they made him over to the Portuguese clergyman. The reverend father, in due course, made him a christian. • " With respect to the literature and language of the Burmans, the mission Mr Crawford^s Account of the Mission to Ava. S69 was placed, in many respects, under very favourable auspices. One of the members of it, Dr Judson, had acquired a knowledge of both far exceeding what any other European had ever done before him. Vocabularies have been collected of some of the numerous dialects spoken within the Burman domi- nions, and which, in all, are not fewer than eighteen in number. Of the books which have been brought from Ava by the mission, may be mentioned a col- lection sent by the King to the Governor-General ; among other works which this collection contains, is a Pali dictionary and grammar, with Burman trans- lations, and some histories of Gautama, or Budd'ha, highly esteemed by the Burmans. " Burman history, such as it is, has been investigated with some success, and chronological tables of its principal events, true or alleged, been procured. These tables go as far back as 543 B.C. The first monarchs are said to have come from India, that is, from Magadha or Bahar, and to have fixed the seat of their government at Prome, where it continued for 336 years. Traces of the walls of the ancient capital are still to be seen a few miles distant from the modern town. The seat of government was afterwards transferred to Pugan, in the year of Christ 107, where it continued for more than twelve centuries. Hence the wonderful extent of the ruins of that capital. In 1322 the seat of government was transferred to Sakaing, and in 1364 to Ava, when it conti- nued for 369 years, or until the capture of the place by the Talains. Alompra, or Alaong-Bura (one that expects to be a Budd'ha), made his native town, Monzaba (Motsobo) the capital of the empire in 1752. His descendants, by a silly and superstitious caprice, have been shifting the capital ever since. One of his sons removed it to Sakaing, another to Ava, another to Amerapura, and his present Majesty to Ava again, in 1822, Each of these barbarous changes was nearly equivalent to the destruction of a whole city. From the foundation of the monarchy to the present time, there have reigned 128 kings, which gives an average of something more than seventeen years to a reign. " Of relics of antiquity far more have been discovered than might have been expected to exist from previous accounts. The most remarkable are to be seen at Pugan, Sakaing, Sanku, and Angl-e-y wa. The mission had an opportunity of examining those of the two first, which consist of temples and inscriptions. The most remakable by far are the ruins of Pugan, which extend for twelve miles along the eastern bank of the Irawadi, and to a depth of five or six. Many of the temples are still entire, and exhibit a style of architecture, and a superiority, both in building and materials, which far excel the present efforts of the Burmans. In one of the old temples at this place we found, to our surprise, images in stone, of braminical origin. These were figures of Vishnu, Siva, and Hanuraan. Near another temple was discovered a small but neat and perfect inscription in the Deva Nagari. At Pugan we discovered not less than sixty inscriptions on sandstone ; and including Sakaing and other places, we found in all not less than 330. In one place alone, the great tem- ple of the Arracan image, near Amerapura, the late king had . collected from various parts of the country no less than 260 such monuments. A few of these are on fine white marble, but the greater number upon sandstone. In form, the stones resemble the tomb-stones placed at the head of graves in aa JULY SEPTEMBER 18^7- A a StO Mr Crawford's Aciiount of the Mission to Ava. English church-yard. Some are in tbe round Pali character, and others in the Buhhah ; but the greater number in the former. They all contain dates, and generally the name of the reigning king, with references to some historical event ; but the chiet object is to commemorate the founding of some temple or monastery. Translations of several of these inscriptions have been effected, and good draAvings made of some of the most striking of the ancient temples. Information, in considei-able detail, has been obtained respecting the condition of manufacturing and agricultural industry amongst the Burmans, the state of landed tenures, the wages of labour, the price of food, and the rate of popu- lation. Barbarous as the Burmans must be admitted to be, in comparison with the Hindus, the Chinese, the Persians, and the Arabs, they have still ^)me advantages over these liations, the natural result of the frame of society among them. The population is thinly scattered over an immense tract of fruitful country ; the most fertile lands are so abundant that every man may have as much to cultivate as he chooses to occupy ; food is low priced ; labour highly rewarded.* The people are easy in their circumstances, as far as mere food, clothing, and dwelling are concerned, and there is much equality amongst them ; for if there be some rich, there are none very poor, and there is scarce- ly any beggary. These natural advantages are far more than counterbalanced by the possession of a government lawless and despotic, and from the oppres- sion of which, the poverty of its subjects is their best protection. No man must here presume to be rich. If he acquire wealth, it is at the peril of be- coming a prey to the harpies of government. Sooner or later he will get into trouble, and his property must be ultimately swallowed up in those sweeping- confiscations which extinguish every germ of prosperity in the countiy. " The population and resources of the Burman empire seem to have been greatly exaggerated. The inhabitants have been reckoned at 17,000,000 at 19,000,000, and even at 33,000,000. Let any one accustomed to consider such matters, look at the country along the banks of the Irawadi, from the sea to Ava, a course of 600 miles, the best part of the kingdom ; he will then see that the greater portion of it is covered with primeval forest, without ves- tige of present or former culture, and he will be convinced of the utter impro- bability of such exorbitant estimates. " The iS)llowing fact will convey a better notion of the true state of popula- tion and improvement than any yet before the pubUc. The three towns of Ava, Amerapura, and Sakaing, with the districts annexed to them, contain an area of 283 square miles, and constitute by far the best cultivated and most populous portions of the empire. It is nearly exempt from taxation, being favoured through ancient and established usage, at the expense of the rest of the country. It contains, according to the public registers, 50,600 houses, and each house is estimated to haA-'e seven inhabitants, which makes their to- tal population only 354,200. Ava itself certainly does not contain , 00 in- habitants ; and in population, wealth, industry, and trade, is greatly below the capital of Siam. The other large towns of the Burman empire, such as Ran- goon, Prome, Monchabu, Monay, &c. which are not above a dozen in num- ber, do not any of them contain above 10,000 inhabitants. The population of Rangoon was ascertained by an actual census in our own time, and found to amount only to between 8,000 and 9,000. It used formerly to be estimated s high as 30,000. ( 371 ) Account of a new Calceolaria^ and of Nepenthes distillatoria, mas. which have lately flowered in the Royal Botanic Gar- den, Edinburgh. Communicated by Dr Graham. Calceolaria purpurea. l^^^ September I827. C. purpurea ; herbacea, caulibus pluribus, erectis, ramosis ; foliis venoso- rugosis, hispidis, radicalibus ciineato-spathulatis, serratis, postice inte- gerrimis, petiolatis, subacutis, cauliniis cordatis, decussatis, superioribus minoribus integerrimis ; Corynibis terminalibus, multifloris. Description — Sterns^ many from the same root, erect, pubescent. Root- leaves spathiilato-cuneate, somewhat acute, with a strong middle rib, veined, wrinkled, with a few long, scattered hairs on their surface; stem.' leaves cordate, broad, decussating, more wrinkled than the root leaves, uppermost pair nearly smooth, and quite entire. Corymbs terminal ; bract^ce 2, ovate, at the base of the corymb ; pedicels numerous, slightly bent, filiform. Calyx, segments ovate, pubescent. Corolla rather small, of uniform reddish-violet colour, upper lip nearly half the size of the lower, which is doubly furrowed. The seeds were received in December 1820 from Mr Cruckslianks, who col- lected them on the Cordilleras. The habit of the plant is quite that of Calceolaria corymhosa^ next which it should be placed, and it seems to require the same treatment. It flowered at the Royal Botanic Garden, Edinburgh, in the beginning of August 1827. Nepenthes distillatoria. — Mas. N. distillatoria ; caule suffruticoso, subramoso, cirrhis scandenti ; foliis spar- sis, oblongo-lanceolatis, petiolatis, aveniis, decurrentibus, ascidiis sub- ventricosis; racemis oppositifoliis, prope summos ramorum, subsimpli- cibus. Description. — Stem eight feet high, round, below slender and somewhat woody, above twice as thick, and more herbaceous, branching. Buds small, and placed above the axils of the leaves, many of them abortive. Leaves entire, channelled, undulated, glabrous, scattered, 1-1 ^ feet long, exclusive of the cirrhus, but including the petiole, along which they are broadly decurrent, and which is about 3 inches long, half stem clasping, and decurrent half-way to the next leaf below, veinless, or veins onfy obscurely seen, and not prominent, on either side till dry, after which several slender veins and nerves are observed, nearly parallel to the middle rib, and reticulated with transverse veins : middle rib strong, prominent behind, drawn out into a cirrhus from 10 to 12 inches long, flattened on its upper side, and convolute in the middle, enabling the r plant to climb, from this point somewhat thickened and turned down, I having at its extremity an erect pitcher., which is wedge-shaped behind ^ when young, afterwards in its lower half obscurely conical, above this contracted a little, and nearly cylindrical, its mouth oblique, with a rounded, regularly and transversely wrinkled edge, and a round lid con- nected by its posterior margin to the highest portion of the oblique mouth, where alone the wrinkled edge of the pitcher is interrupted. The outer edge of this border is revolute after the lid rises, but before this is erect, and passes within the sides of the lid, which at that time I are folded down. Diameter of the lid from back to front is 2 inches, I; transversely it is 2\ inches. Two prominent and curved ribs (between \ which, and also between them and the edges, the lid, otherwise flat, is somewhat depressed) run on its upper surface from the base towards its anterior edge, and from the point of their union at the base, is project- ed a small awl-shaped spur, and along the back of the pitcher a nerve, which becomes less prominent towards the extremity of the cirrhlis. I Along the front of the pitcher are two prominent ribs, extended from the edges of the flattened surface of the cirrhus : these are more promi- Aa2 372 Dr Graliani's List of Rare Plants. nent than the nerve on the back, and more or less completely flatten the pitcher on its anterior surface, which is the heel of the wedge in its young state. Lid at lirst closed, afterwards raised to about a right angle with the oblique opening of the pitcher, and is never again closed. Before the opening of the lid, rather more than a drachm of Umpid fluid was formed within each of the largest pitchers on our specimen. This had a sub- acid taste, which increased after the rising of the lid, when the fluid slowly evaporated. My friend Dr Turner perceived it to emit, while boiling, an odour like baked apples, from containing a trace of vegetable matter, and he found it to yield minute crystals of superoxalate of pot- ash, on being slowly evaporated to dryness. The pitcher whose contents Dr Turner analysed was a large one, it had not opened, and the whole fluid weighed only 66 grains. The upper part of the pitcher decays first ; and the Bne at which this is observed, is often quite defined. Our largest pitchers measure 63 inches from the highest part of the oblique mouth to the lowest part of the curvature at their base; the greatest circumference 4 1 inches. Flowers dioecious. Perfume offensive, resembling in kind, though less in degree, that of the Lilium pomponium. Raceme solitary, opposite to a leaf near the extremity of the branch ; its extremity nod- ding, till the flowers expand in succession, when it is elongated, and be- comes erect. Peduncle round, about 2^ feet long, of which about 1 1 inches at the base is without flowers ; pedicels round, ^-f inch long, clus- tered irregularly, and frequently bifid supporting two flowers, having a small subulate bractea on the lower side near the base, and sometimes the appearance of an abortive one opposite and nearer the flower. Calyx 4-parted, spreading or slightly divaricated ; segments blunt, coriaceous, concave, and containing honey, green within when first opened, after- wards red in the middle ; two opposite segments slightly overlap the two others in the bud. Anthers numerous, collected into a capitulum on the top of a hollow club-shaped pedicel, formed by the united filaments ; pollen an abundant yellow powder. The middle rib of the leaf, the cir- rhus, the whole outside of the pitcher when young, but its ribs chiefly when old ; the peduncle, pedicels, every part of tlie calyx which is ex- posed in the bud, and a narrow triangular space extending upwards from the axil of the leaf to the bud, which it includes, are covered with a rusty pubescence ; every other part of the plant is smooth. The whole is green except the lower part of the stem, which is brown ; but the leaves, at first darkest above, become yellow in fading, and there is a tendency in them, and in almost every other part of the plant, to become red, parti- cularly in the lid, and especially its under side, which uniformly acquires a deep red somewhat mottled colour, though at first it is quite green. This plant is certainly the same species as the female specimen figured from the collection of Messrs Loddiges in Botanical Cabinet, t. lOl?-, under the name of N. destillatwia^ and in Bot. Mag. t. 2629. under the name of N. Phyllamphora. The seeds from which they sprung were, I believe, introduced from Ceylon at the same time. What Linnaeus meant by his N. destillatoria, does not certainly appear, for he refers to the Cantharifera of Rumphius's Herbarium Amboinense, v. 5. t. ^. f. 2., and to the Pandura Zeylanica of Burmann's Thesaurus Zey lanicus, 1. 1?*, — figures of plants which differ altogether from each other, as the first, at least, does from the subject of the present article. If any conclusion coidd be drawn from the bad figures of Pluckenetius and Grimm, to which refe- rence is also made by Linnaeus, I should believe that these also differed from each other, and those quoted alongst with them, as they certainly do from the present species. Our plant differs from the description of Phyllamphora of Loureiro in the stem being branched, the leaves vein- less, and scattered, the inflorescence a lateral raceme, in which the pe- dicels are frequently bifid, supporting two flowers, and in the an- thers being more numerous. In Loureiro's plant, the stem is de- scribed as simple, the leaves lineato-veined and opposite, the inflo- rescence a terminal, perfectly simple spike. Our plant, however, has only produced two branches besides tlie leading shoot ; and this ten- Dr Graham's List of' Rare Plants. 373 dency may possibly have been given by its top having been injured se- veral months ago. The universality of the buds in the axils of the leaves, however, makes me believe in the branching being natural. Near the extremity of each of the three shoots, a raceme is produced. Our plant farther differs from Loureiro's description, in the lid never closing after it once opens ; but the power of alternate opening and closing, even in his plant, was probably imaginary, as his statement of the pitchers receiving the night dews certainly is. The fluid which they contain is undoubtedly a secretion, but for what purpose does not appear. It is stated to have nearly filled one-third of the pitcher in Messrs Loddiges plant ; but with us it never much exceeded a drachm, even in the largest pitchers, whose capacity was three ounces five drachms. The outline figure in Bot. Mag. t. 2629. is very good ; but the detached pitcher is much too contracted in its upper half, and the lid is not nearly so flat as it always is after it has been fully opened. The site of the two large nerves is occupied by prominent wings, and the base is bent exactly in the opposite direction from that which it takes in the outline figure, and in the specimen which I have described. We have two plants which scarcely yet exceed the size of seedlings, in which these wings, strongly ciliated, are present ; and, as in the detached pitcher, t. 2629. their pitchers are so bent at the base that the cirrhus passes be- tween the wings. It is probable, therefore, that these appearances are peculiar to plants which have not yet advanced to maturity. The youngest pitcher on the large plant has the same relative situation to its cirrhus that the oldest has, and the same absence of wings. In Rum- phius's figure, the position of the pitchers is always, as in the detached pitcher of the Magazine. The imperfect figure given by Ammannus of his Bandura Zingalensium in Miscell. Curios. Ann. prim, decur. 2. t. 13., seems to approach nearly to the present species. The N. distillatoria of Linnaeus is quoted by Lamarck under N. indica^ and, notwithstanding some difference in the description, I believe this (iV. in- dica) to be our species, though reference is made from it to Plukenetius, Ammannus, Burmann, and Rumphius, to the last indeed with doubt. Where a change of name has become necessary, it is an evil which must be endured, but as no necessity appears to exist here, I retain that by which our plant was universally known, at least in this country. Our specimen has been constantly kept in the stove, and now produces a very striking effect, by supporting itself on the adjoining plants, and hanging from them its pitchers. It gives off suckers, but not freely, a circumstance remarked in the female plant by Mr Loddiges. Mr Mac- nab has succeeded in propagating two plants in this way. Celestial Phenomena from October 1. 1827 to January 1. 1828, calculated for the Meridian of Eidinhurgh^ Mean Time. By Mr George Innes, Aberdeen. The times are inserted according to the Civil reckoning, the day beginning at midnight, — The Conjunctions of the Moon with the Stars are given in Right Ascension. OCTOBER. D. H. , /, D. H. , ., 3. 10 57 50 6 ?yTij 9. 14 13 6 9^ W 5. 1 54 6 O Full Moon. 10. 4 33 19 66- ^ 5. 9 37 35 d D^ K 13. 50 23 ( Last Quarter. 7. 10 29 30 Sup. c^ © ? 13. 3 4 55 6 ])h 7. 16 7 10 6^^ 14. 20 17 15 d D 1 « 25 9. 10 28 43 6D^ ^ 14. 21 21 6 d D 2 « sc 374 Celestial Pkenomcna/rom Oct 1. 1827 to Jan. 1. 1828. OCTO BER. D. 11. / // T). W. / // If?. 1 24 28 69 U 21. 5 9 17 6D^W 16. 3 50 8 d Dt ^ 21. 18 44 28 6 ))2«:^ 18. 1 57 6 D 6 21. 22 30 27 6D^ 18. 3 48 35 6 1)- a 22. 11 30 58 6 ])4C=^ 18. 22 44 25 dOV 22. 21 18 32 66(iW 20. 13 13 25 6D H 23. 49 57 d ]) 1 )8 m 20. 15 19 28 % New Moon. 23. 51 16 6 D 2/3 TTt 2». 21 54 12 6 D? 23. 3 20 13 6 DvlTl enters Tl]^ 24. 4 20 7 . •"• / // D. H. / // 1. 16 58 55 d D ^ K 17. 7 13 25 Em. III. sat. 2/ 2. 2 34 4 6 ))^ni 17. 9 43 44 dD^ 3. 16 44 44 O Full Moon. 17. 15 24 27 Falir. J 56 De Luc, Lavoisier and Laplace, - - 55^ Hallstrom, . - - - g^ Dulong and Petit, _ - - ^^ Mean. 1 55^43 From 1° of Fahrenheit's scale this is equal to ^ -^ or •00010023 ; which may be called one ten-thousandth, without the most trifling error in practice. The barometric column may therefore be reduced to the standard temperature of 32° Fahren- heit, by the following simple rule, which will make a table un- necessary: Before the first three figures of the observed height, place two cyphers, multiply by the temperature of the mercury, 32°, and subtract the product from the observed height. Ex- ample^ barometer 30.597, temperature of mercury 74°. 30.597 TOO 74— 32° =.00305x42 =1.128 and ^^^^^ . , • u. 30.469 correct height. When the temperature of the mercury is lower than 32°, the tem- perature is to be subtracted from 32°,^and the product of the whole is to be added to the observed height. Thus, let the barometer be as before, and the temperature 15 30.598 32° — 15 = 17, = .00305 x 17 = .052, and ^^^ 30.649 correct height. J. FOGGO. 4. Aurora seen in the daytime at Canonmills. — The morn- ing of Sunday the 9th September was rainy, with a light gale from the north-east. Before midday the wind began to veer to the west, and the clouds in the north-western horizon cleared away : the blue sky in that quarter assumed the form of a seg- Scienii^e Intelligeme. — Meteorology- 379 ni6nt of a very large circle, with a well defined line, the clouds above continuing dense, and covering the rest of the heavens. The centre of the azure arch gradually inclined more to the north; and reached an elevation of nearly 20*. In a short time very thin fleecy clouds began to rise from the horizon, within the blue arch ; and, through these, very faint perpendicular streaks of a sort of milky light could be perceived shooting : the the eye being thus guided, could likewise detect the same pale streaks passing over the intense azure arch ; but they were ex- tremely slight and evanescent. Between 9^and 10 in the even- ing of the same day, the aurora borealis was very brilliant : so that there is no reason to doubt that the azure arch in the morn- ing, and the pale light seen shooting across it, were connected with the same phenomenon. 5. Aurora Borealis. — On the 29th of August last^we observ- ed at Milnegraden, in Berwickshire, from 11 until half past 12 o^clock, a fine display of the polar lights. The centre of the arch appeared to be nearly in the magnetic north, and its light as well as that of the beams was brilliant. The evening was clear and calm ; but on the following morning the wind changed, and heavy rain, with a strong gale of wind succeeded. On Sunday even- ing, 9th instant (September), we noticed at Roslin another dis- play of the polar lights. They were first visible about 8 o'clock V. M., and continued until 12 at night. When firstobserved, they appeared in the form of a single luminous arch, low in the atmo- sphere, (to the eye at times appearing almost to touch the surface of the earth), extending from NW. to SE., with accompanying flitting beams. After some time, the position of the arch gra- dually changed, and at length became nearly stationary, in a NE. and NNE., and SW. and SSW. direction. It gradually rose higher in the a4:mosphere, became double, its light grew more intense^ the beams more numerous, and exhibiting their usual flitting motion. Towards 12 o'clock the beams and arches became faint ; at length there remained but a faint pale yel- lowish light occupying the space, which, in its turn, at length disappeared. These lights, as is generally the case, were accom- , panied with cirrus clouds. It is worthy of remark, that the cir- rus cloud, when carefully observed, appears generally more or S80 Scientific Intelligence, — Meteorology. less agitated,— a fact illustrative of its connection with the polar lights. It is even probable, that the cirri observed during the day time are often accompanied with polar lights, which, how- ever, are invisible, owing to the stronger light of the sun. This display of the polar lights, like that of the month of August, was followed by a change of windy rain showers, and gales of wind. 6. Meteor, — A very fine meteor was seen at Laytonstone, about four miles north of Greenwich, on the 21st of May last, at 10^ 30"^ p. M. When first seen, the meteor had the appear- ance of a small spark, moving slowly in an oblique direction across the western sky. When about half through its course, the light suddenly and rapidly increased in splendour, assuming a very rich yellow hue, and emitting sparks from the main body. After this appearance of ignition, it left a few feeble sparks, which continued to move in the same right line a short space, and then disappeared. Jupiter shone at a little distance above the meteor, but very far short of its brilliancy ; though similar in its explosive appearance to a rocket, the meteor was at once to be distinguished from any projectile of that kind, by the re- markable straight direction of its course, from first to last, with- out the least appearance of the course which the attraction of gravitation to the earth would have occasioned. The following observations were immediately taken respecting its course : Alti- tude of its first point of appearance 28° ; altitude of its last point of extinction 10° ; length of its course 28° ; bearing of its first point 54° west from south ; bearing of the last point 37° west from south ; the time occupied in traversing its course rather exceeded four seconds. The meridian of Greenwich is scarcely half a second west of the place of observation. The above me- morandum may be interesting to other observers, and serve as materials for calculation. 7. Luminous Cross in the Heavens. — Luminous crosses, oc- casioned by peculiarities in intersecting halos, are sometimes ob- served in the sky, particularly of arctic countries. Some pre- tended miraculous crosses which have been seen in the air in mo- dern times, are to be traced to atmospheric reflections. In the • month of February 1827, a shining cross, we are informed by Scientific Intelligence. — Meteorology. S81 the public journals, was observed in the air at Poictiers, towards the close of a mission which was preached there. Four thou- sand persons, we are told, saw it ; many considered it as mira- culous^ but it was remarked by others, that, before the conclu- sion of the sermon, a cross was erected on the' ground, and then it was, and not till then, that the luminous cross appeared in the atmosphere. 8. Polar Lights in *S'i6^ria.— Baron Wrangel remarks, that, in Siberia, when shooting stars pass across the space occupied by polar lights, that fiery beams suddenly arise in the place traversed by the shooting star. Further, that, when a polar beam rises high towards the zenith, when the full moon is also high, it gradually forms a luminous circle around the moon, at a distance from her of from 20° to 30° ; remains in this form for a short time, and then disappears. HYDROGRAPHY. 9. Water of the Dead Sea. — Five different analyses have been made of the famed water of the Dead Sea, the first by Macquer, Lavoisier, and Le Sage, (Mem. de FAcad. de Scienc. p. 1778) ; the second by Dr Marcet, (Phil. Trans, for 1807, p. 296) ; the third by Klaproth, (Beit. b. v. p. 185) ; the fourth by Gay Lussac, (Ann. de Chim. et Physique, t. xi. p. 197) ; and the fifth by Hermbstadt, (Schweigg. Journ. bd. 34, s. 153). A sixth analysis has just been published, by C. G. Gmelin, in the Memoirs of the Wirtemberg Society, vol. i. Gmelin's investi- gation is interesting on account of his having detected brome as one of the constituents of this water. The following is the re- sult of his analysis : chloride of lime, 3.2141 ; chloride of mag- nesia, 11.7734; bromate of magnesia, 0.4393; chloride of soda, 7.0777 ; chloride of potash, 1.6738 ; chloride of alumina, 0.0896 ; chloride of manganese, 0.2117 ; muriate of ammonia, 0.0075 ; sulphate of lime, 0.0527=24.5398 ; water, 75.4602. 10. Analysis of the Water of the River of Sagis in Siberia.---' The liver Sagis flows in the Kirgis Steppe, between the Lake Aral and the Caspian Sea, and contains so much saline mat- ter, that its water is not drinkable. A portion of this water was examined by Dr Hess, at present in Ixkutsk, who found in 38'2 Sde^itific Intelligence. — Hydrography. 1000 parts the following salts : — Sulphate of soda, 6.835 ; sul- phate of lime, 4.511 ; muriate of magnesia, 3.941 ; and muriate of soda, 70.598=85.885. 11. Dr Dauheny'^s Circular requestiiig iiiformation in regard to Mineral Waters. — For many years past we have urged the importance of attention to the chemical and natural history of liot-springs and mineral waters, and we are happy to find the sub- ](xX taken up by one so well qualified to do it justice as our friend Dr Daubeny. The following copy of the printed circii- lar will explain Dr Daubeny\s wishes. " Sir, Being desirous of investigating the properties of such of our mineral waters as appear as yet to be known but imperfectly, I take the liberty of so- liciting information respecting those in your neighbourhood, and of submitting to you for that purpose the following queries : — \st. Are you awai'e of any springs in your country, or in those adjacent, the heat of which exceeds the medium temperature of our climate ? 2d^ Is the temperature of such springs fixed or variable ? 3rf, Do you know of any distinguished from ordinary wa- ter by certain peculiarities, either sensible or chemical ? Ath, Are you ac- quainted with any to which medical virtues are or have been ascribed, or which, when taken, produce any remarkable effects on the animal functions ? 5/A, Do the springs above alluded to give out any gaseous products, and of what description ? Gth^ What is the geological character of the stratum from which they arise ? 'Jt\ What effects do they produce on the stones and other substances with which they come in contact, upon the contiguous soil or upon animals ? 8^A, Are there any works in which a detailed and authentic account of such springs may be found ? In addition to answers to the above queries, I beg leave to request any further information relative to hot or mineral wa- ters which you may have it in your power to afford me ; and shall likewise feel obliged by receiving samples of the more remarkable ones, carefully corked and sealed on the spot, and in quantity not less than a pint. They may be addressed to the Chemical Laboratory, Broad Street, Oxford, for Charles Daubeny, Professor of Chemistry, Oxford." — Oxford^ l^th July 1827. GEOLOGY. 12. Rule to he followed in examining Caves co7itai7iing Fossil Animal Remains. — Professor Buckland states, that the best rule to follow in pursuit of antediluvian remains in caverns, is to se- lect the lowest part in which any diluvium can have accumu- lated, and there dig through the stalagmitic coat, and seek for the teeth and bones in the mud and pebbles that lie below. He also proposes, as a test for distinguishing bones of this antiquity, Scientific Intelligence. — Geology. 383 their property of adhering to the tongue, if applied to them af- ter they are dry, — a property apparently derived from the loss of animal gelatino they have sustained, without the substitution of any mineral substance, such as we find in the bones imbed- ded in the regular strata. This test extends equally to the bones of the osseous breccia of caverns and fissures, and to those in all superficial deposites of diluvium, excepting such as are too clayey to have admitted the percolation of water ; but the pro- perty of adhesion is rarely found in bones from recent alluvium, or from peat-bogs ; nor does it exist in human bones, which Dr Buckland has examined from Roman graves in England, and from the Druidical tombs of the ancient Britons, nor in any of the human bones which he has discovered in the caves of Pair- land and Wokey Hall. Dr Buckland proposes to apply this test to the much disputed case of human bones, said by Schlot- heim to have been discovered in the cave of Kostritz, in contact with those of the rhinoceros and other extinct animals. — Annals of Philosophy, August 1827. 13. On Chains of European Mountains. — The third volume of the Ilecueil des Memoires de la Societe de Geographic is in the press. It entirely consists of the important work of M. Bruguiere, on the Chains of the European Mountains, to which the Prize of the Society was awarded in 1 826. 14. Death of Prcrfessor Brocchi. — Professor Brocchi, so well known by his numerous works on geology and conchology, and who was employed for five years in travelling through Africa, at the charge of the Pacha of Egypt, as director of a company of European miners, died, just as he was on the point of return- ing to Europe with the result of his various researches. 15. Discovery of Fossil Mammalia in Auvcrgne. — Very inte- resting fossil bones have lately been discovered in Auvcrgne, of which figures and descriptions are at present in the progress of publication. The bones are buried in a series of sandy strata, about two metres thick, arising from the debris of primordial deposits, and containing some fragments of lava. These beds of sand are covered by a bed several hundred feet thick of vol- canic tufa, composed of fragments of pumice, and containing pieces of basalt, and considerable blocks of lavas, resembling 384 Scientific Intelligence.' — Geology. those of Mont-Dore. This deposit is interrupted by a bed of rolled pebbles ; it forms the platform which crowns the moun- tain of Perrier. Under this deposit, which contains bones, there is a thick bed of pebbles of a large size, volcanic and primitive, of from three to four metres thick, which rests immediately up- on the limestone deposited in fresh water-lakes, the strata of which contain, along with other remains of animals, a multitude of shells analogous to those which live, at the present day, in our marshes and brooks. The bones of this latter deposit, which is the oldest in the order of time, belong to genera which no longer exist on the earth, and to species of genera still exist- ing, but which are themselves extinct. They belong to lophio- dons, anaplotheria, civets, species of the genus lagomys, fresh- water tortoises, crocodiles, and serpents. Among them are eggs perfectly preserved, and skeletons of birds. The more modern deposit contains bones of tapirs, elephants, rhinoceroses, horses, hippopotami, mastodons, beavers, dogs, mice, of several large cats, tigers, panthers, and eleven or twelve different species of the deer kind. All these bones completely retain their original form, even their chemical nature has been little altered ; for they contain thirty-six parts of phosphate of lime, and seven of animal matter. 16. Teneriffe Filtering Stone.— The filtering stone of Tene- riff is one of those modern calcareous formations described by Dr Fitton, in his interesting geological view in Captain King's Voyage. Von Buch, in his Geology of the Canary Islands, de- scribes the filtering stone as daily forming on the sea-shore, by the agglutination of broken shells, and fragments of trachyte and basalt, by means of a calcareous sinter deposited from the comparatively hot sea-water of the tropical seas ; and most of the grains of the rock thus formed have a calcareous crust, formed around a nucleus of trachyte, basalt, or fragments of shells, and the whole much resembles oolite or roestone. He adds, " Since I witnessed the formation of the filtering stone, I do not deny that the oolite of the Jura limestone may have been formed by agi- tation, in warm water, of fragments of shells ; and I doubt not that beds of oolite may, even now, be depositing in this way on tlve coral banks of the tropical regions." In Captain Campbell's Scientific Intelligence. — Mineralogy. 385 account of the Island of Ascension, published in a former num- ber of this Journal, a modern calcareous formation is mentioned, and rocks of the same description occur in Scotland, MINERALOGY. 17. Hydrosilicite, a new Mineral Species. — Dr Kuh, in his in- augural discourse, entitled " De Hydrosilicite, nova fossilium specie, Berlin 1 826,"''' informs us, that he found, in the serpentine of Frankenberg in Silesia, along with chrysoprase,opal, and pimelite, a mineral which he names Hydrosilicite. It is white, without lustre, feels greasy, translucent, fracture even, soft, does not ad- here to the tongue, amorphous, and appears to be almost entire- ly composed of pure silica and water. 18. Chrornein differ e7it Minerals. — According to Walchner's experiments, chrome occurs not only in the different varieties of olivine, but also in several other minerals, in which magnesia is a constituent part, as in many steatites, actynolite, all serpentines, greenstone, basalt, &c. 19. Fluoric and Muriatic Acids in Apatite. — Gustave Rose finds that apatite contains not only muratic acid, but also occa- sionally a considerable portion of fluoric acid. 20. Glaulwlite, a neiv Mineral Species. — -This mineral, found by Menge in Siberia, occurs imbedded in a compound of com* pact felspar and granular limestone, which sometimes contain scales of talc. Its colour is lavander blue, which sometimes passes into green. It is translucent on the edges, with a splintery fracture, vitreous lustre, a hardness intermediate between that of fluorspar and felspar, and a specific gravity of 2,721. Accord- ing to Dr Bergemann it contains the following constituent parts : Silica 50.583; Alumina 27.600; Lime 10.266; Magnesia 3.733; Potash 1.266; Natron 2.966; Oxide of Iron 0.100; Manganese 0.866; Loss 1.733. = 99-113. The iron and manganese are not essential constituent parts of glaucolite, as is shewn by the range of colour extending from blue to white. The magnesia appears to be derived from the talc scales. Hence if silica, alumina, and lime with alkali, be considered as the constituent parts of glauco- lite, the following will be their proportions ; Silica 54.58; Alumina 29.77; Alkali 4.57; Lime 11.08= lOO.OO.—Pcgg-m- drofs Annalen, St. 2. 1827. JULY — SEPTEMBER 1827. B h 386 Scientific Intelligence, — Mineralogy. 21. Ilmenite is Axotornous Iron Glance. — In the January Number of the Annals of Philosophy, M. Levy says Ihnenite is the axotomous iron-glance of Mohs ; more lately Gustave Rpse has come to the same conclusion. He finds the axotomous iron glance to be titaniferous, — a fact which need not surprise us, when it is recollected that iron-glance and titaniferous iron-ore,have the same crystallisation. £2. Apatite in Secondary Trap and Trachyte. — Apatite or phosphate of lime, in small crystals, occurs imbedded in the se- condary greenstone of Salisbury Cralgs in this neighbourhood. It has also been found in the trachyte and hornblende of the Eifel in Germany. 23. Boracic Acid in Mica. — Gmelin, in using the blowpipe test of Dr Turner, for ascertaining the presence of the boracic acid in minerals, has detected it in the lepidolite of Rozna and Uto, in the pinite of the Valley of the Mulda near Penig in Saxony, and in mica of a graphic granite from Siberia. He has also, in the moist way, found boracic acid in a silver white mica from Fahlun. The proportion in lepidolite appears about 4 per cent. 24. Curved Lamellar Heavy Spar, a new Species. — This mi- neral, as it occurs in the Freyberg mining district, according to Breithaupt, has a specific gravity of 4.02 — 4.29, whereas that of true heavy spar is 4.30 — 4.58 ; further, it is a compound of sulphate of barytes and sulphate of lime. It decays more readily than straight lamellar heavy spar, owing to the anhydrous sul- phate of lime passing on exposure into gypsum. He names it calcareous heavy spar, 25. Fiuo7ic Acid in Felspar. — The genus felspar, according to Breithaupt, contains at least seven well marked species, viz. petalite, perikline, orthoklas, tetartine, oligoklas, Labrador, and anorthite. All the species have been found to contain fluoric acid. BOTANY. 26. Botany of' the Dutch East India Possessions. — The cele- brated Dutch Naturalist, Dr Blume, has lately arrived in Europe, after a residence in Java of nine years. He has brought with him an immense collection of objects of Natural History, and in- tends publishing an extensive work on the botany of the Dutch Scientific Intelligence. — Botany. 387 East India Possessions. As precursory to this work, he pu- blished, at Batavia, a View of the Vegetable Kingdom of Java, in Fifteen Parts. 27. Common Sugar existing in the form of grains in the floivers of' Rhododendron ponticurn. — M. Jaeger discovered, in April 1825, on a plant of Rhododendron ponticum, which he kept in his room, and which was covered with flowers, grains of com- mon sugar, pure and of a white colour, on the inner surface of the upper division of the corolla. The quantity of grains col- lected from about 140 flowers amounted to 275 centigrammes. The mean weight of each grain was two centigrammes. The physical and chemical properties of these grains approach so much to those of common sugar, that no essential difference could be detected between the two substances. 28. On the Cotton of the Ancients. — The synonymy of the vegetables known to the ancients, is one of the most difficult points of science to establish, and is a continual subject of re- gret, especially when reference is made to vegetables, which have been extensively employed. M. Mongez has therefore rendered a service to science, by clearing up this part of the his- tory of cotton, in a memoir lately published. Two very diffe- rent vegetables have been confounded under the name of cotton, the Bombax and the Gossypium or cotton tree. It is the former of these that was designated by Herodotus, as well as by Strabo, who relates, that the Macedonians employed in Ba- bylonia, the down of the tree which bears wool to make hous- ings for horses. Theophrastus speaks of both. The substance which Virgil mentions as fabricated by the seres^ is the cotton which came from Bactiia, called serique. The Gossypium was only cultivated in Egypt after the time of the Ptolemies ; in the Western Morea, in the second century. Asia and Persia, among other countries, already possessed very celebrated manufactures of cotton. It was used as a substitute for papyrus, and the parchment which succeeded it, until it was itself replaced by paper made from flax and hemp. The word cotton evidently comes from g'hotten^ by which the Arabians, wlio cultivated this vegetable before the commencement of our era, designated it, and from Cottonara (now Canora), a country on the coast of Malabar, from which the Arabians and Egyptians carried it in- to their respective countries. 388 Scientific Intelligence. — Zoology. 29. Brich Tea. — The Mongols, and most of the Nomadic tribes of middle Asia, make use of this tea ; it serves them both for food and drink. The Chinese carry on a great trade in it, but nevfer drink it themselves. In the tea manufactories, which are for the most part in the Chinese government of Fokien, the dry, dirty, and damaged leaves and stalks of the tea are thrown aside ; they are then mixed with a glutinous sub- stance, pressed into moulds, and dried into ovens. These blocks are called by the Russians, on account of the shape, hrich tea. The Mongols, the Bouriats, the inhabitants of Siberia beyond Lake Baikal, and the Kalmucks, take a piece of this tea, pound it in a mortar made on purpose, and throw the powder into a cast-iron vessel, full of boiling water, which they suffer to stand a long time upon the fire ; adding a little salt and milk, and sometimes mixing flour fried in oil. The tea, or broth, is known by the name of Satouran. It is very nourishing. — Timkons¥Cs Travels. ZOOLOGY 30. Asiatic Elephant — Cuvier says the Asiatic elephant is fifteen or sixteen feet high. This appears to be a mistake ; ele- phants in India rarely, if ever, exceed eleven feet in height. 31 . Organization of the Camelopard. — At a meeting of the Academy of Sciences, Paris, 10th August, M. G. St Hilaire, demonstrated from the skull of a young giraffe, that the horns of this animal are not simple excrescences of the frontal bone, as commonly supposed, but a superadded bone, which it is possi- ble at a particular period to separate. This circumstance is common to the cervi or deers, among which M. Geoffroy pro- poses to class this animal. 32. On the Gossamer-web. — ^A paper was lately read before the Linnean Society, entitled, " Observations and Experiments made with a view to ascertain the means by which the Spiders that produce Gossamer effect their Aerial Excursions ; by John Blackwall, Esq. F. L. S. of Crumpsall Hall, near Manchester."" After noticing that, in the absence of accurate observation, the ascent of gossamer-spiders through the atmosphere had been conjecturally ascribed to several causes, such as the agency of winds, evaporation, electricity, or some peculiar physical powers Scientific Intelligence. — Zoology. 389 of the insects, or from their webs being lighter than the air, Mr Blackwall states, that the ascent of gossamer takes place only in serene bright weather, and is invariably preceded by gossamer on the ground. He then details the phenomena of a remarkable ascent of gossamer, October 1, 1826, when, a little before noon, the ground was everywhere covered with it, the day being calm and sunny. A vast quantity of the fine shining lines were then seen in the act of ascending, and becoming at- tached to each other in various ways in their motion, and were evidently not formed in the air, but on the earth, and carried up by the ascending current, caused by the rarefaction near the heated ground ; and when this had ceased in the afternoon, they were perceived to fall. An account is added of two minute spiders that produce gossamer, and of their mode of spinning ; and particularly when, impelled by the desire of traversing the air, they climb to the summits of various objects, and thence emit the viscous threads in such a manner, as that it may be drawn out to a great length and fineness by the ascending cur- rent, until, feeling themselves sufficiently acted upon by it, they quit hold of the objects on which they stood, and commence their flight. Some of these insects, which were taken for the purpose of observation, when exposed to a slight current of air, always turned the thorax to the quarter from whence it came, and emitted a portion of glutinous matter, which was carried out in a, line. 33. Identity of the two nominal Species of the Ornithorynchus. — In a memoir printed in the Annates des Sciences Naturelles for December 1826, M. Geoffroy St Hilaire proves, from facts observed by him in a number of individuals of ornithorynchus, that the pretended specific characters taken from the red or brown colour of the hair, or the relative size of the spur in the male, are of no value, the circumstances on which they are founded being irregular, and indicative merely of individual differences. 34. Glandular Apparatus^ lately discovered in Germany, mi the Abdomen of the Ornithorynchus. — M. Geoffroy St Hilaire, in a paper in the Annates des Sciences Naturelles, December 1826, denies that the gland discovered by Meckel, and consi- dered by him as the mammary gland of the ornithorynchus, is a true mammary gland. He founds his opinion on the organisa- 890 Scientific Intelligence. — Zoology/. lion of the gland in question being entirely different from that of the mammary gland in woman, and especially in the marsu- pial animals, in the absence of all traces of teats, together with the existence of a beak, which would render suction extremely difficult, if not impossible, and on various other circumstances. He thinks that the gland in question is analogous to that which exists on the sides of the salamanders, or still more to the glan- dular apparatus on the abdomen of the sorices or shrews which is destined to secrete a fetid humour, especially during the breed- ing season. S5. Remarhable Hybrid, — '- There is here at present an ani- mal produced between a stag and a mare. The authorities of the place have attested the phenomenon. The appearance of the creature is very singular ; the fore part is that of a horse, the hinder part that of a stag ; but all the feet are like those of the latter animal. The same stag has covered another mare. The king has purchased the hybrid for the Pfaueninsel, where there is a menagerie.''-— iJ^^rac^ of a Letter to M. de FerussaCy dated Berlin, 9^1 th January 1827. 36. Microscojjic Observations on Animal Tissues ; by Dr HoDGKiN, and J. J. Lister. — In a very interesting paper in the Annals of Philosophy, for August 1827, Dr Hodgkin and Mr Lister state the results of their microscopic observations on animal tissues, which differ much from those of an excellent ob- server, Dr Edwards of Paris. Dr Edwards maintains that the elementary parts of all the tissues are globular ; whereas our authors find that muscle, nerve, artery, and cellular mem- brane, are fibrous. The brain appears to have a globular struc- ture. The minute particles of milk are globular, but those of the blood are circular, flattened, and transparent. 37. Camelopard. — Hitherto natural historians have commit- ted the same error with respect to the camelopard, that they have committed with respect to the rhinoceros, the elephant, and other large animals ; namely, the error of recognising only one species. The camelopard now at the Museum at Paris, differs in so many essential anatomical characters from the kind at the Cape, that it cannot be doubted that there are at least two kinds. The new one is called the Senaar Camelopard, from the name of the country where it lived. A curious circumstance recently Scient^c Intelligence. — Zoology. B&l liappened with reference to it. Some Egyptians going to see it in the dress of their country, the animal gave evident signs of joy, and loaded them with caresses. This fact is explained by the lively affection which the camelopard entertains for the Arab to whose care it is entrusted ; and it was therefore natural- ly rejoiced at the sight of the turban and costume worn by its keeper. M. Mongez has been reading at the Academy of Sciences, a paper, tracing the natural history of the camelopard, from the testimony of writers who have spoken of it, either as having themselves seen the animal, or as having long lived with persons who were acquainted with and had observed it. He points out Moses as the most ancient writer who has mentioned the camelopard ; expresses his astonishment at the silence of Aristotle respecting it, and concludes from that silence not only that the camelopard was at that time unknown to the Greeks, but even that it did not exist in Egypt, as otherwise Aristotle, who had travelled into that country, could not have failed to re- mark it. The first living camelopard that appears to have been seen in Europe, was in the time of Julius Caesar, the year 708 of the Roman era. After that period^ it was introduced into Rome by the Emperors, on various occasions ; sometimes in the games of the circus, sometimes in the triumphs over the African princes. Albert the Great, in his treatise De Animalibus, is the first writer of modern times who speaks of the camelopard. In 1486, one of the Medici possessed one at Florence, which lived there for some time. It appears that the camelopard is some- times a very savage animal ; and it is supposed that the differ- ence in its character arises from a difference in its education and treatment. 38. Hirudo muricata, Linn. — It has been thought (Journal of Science, No. xiii. p. 161.), that the ova and young of this species of sea-leech had remained unknown till this season (1827). It is but doing justice, however, to a distinguished observer of this place (John Graham Dalyell, Esq.) to mention, that, in the year 1822, he bred this animal in jars of sea- water, watching all the changes, from the laying of the eggs to the evolution of the perfect animal. Beautiful drawings of the ova and young, made in July 1823, and bearing that date, are now before us; and in some MS. notes which accompany the drawings, Mr Dalyell remarks, " The Hirtido muricata propagates by eggs of 392 Scientific Intelligence. — Zoology. singular conformation, forty or fifty of which are found de- posited in irregular groups, on shells or other substances. A short stalk rising from a broad thin sole, firmly attached to the substance subjacent, is crowned by a globular head, with a distinct umbilicus on the side. Here is contained a tenacious transparent albumen, of the faintest red. The egg is originally of a fine soft downy aspect, white, or rather tinged with the lightest carnation ; the umbilicus of beautiful orange. But the whole speedily alters, and in two or three days, be- comes of that dark uniform olive, vmder v/hich it always ap- pears when withdrawn from the sea. Each egg contains a single embryo, which, on attaining maturity, issues through the umbilicus. It is then about an inch long, and of a brown colour. Both eggs and young have been produced in my pos- session, from January until April.'"' Mr Dalyell has remark- ed some curious facts respecting this animal. " If solitary, it is torpid in confinement. But, on a stranger leech being- introduced, boxh seem to experience very agreeable sensations. Their necks are intertwined, considerably activity is displayed, and one or more milk-white vesicles, resembling minute grains of oats in figure, are seen protruding from the neck or its vicinity. Some observers have represented a leech, apparently the muricata, with horns. Have they been deceived by the vjesicles, — or is there really a leech with horns .^" None such has ever occurred to Mr Dalyell among eight species of Scotch leeches, of which he possesses drawings and descriptions. 39. The Elk. — That magnificent animal the elk, the monarch of the northern forests, and which so greatly exceeds every other in size, is an inhabitant of the more southern latitudes of Sweden and Norway ; but is not found in Finmark. This animal pos- sesses, in a singular degree, the qualities of both the horse and the ox, combining the fleetness of the former with the strength of the latter in drawing burthens. In former times, when it was found in greater abundance in Sweden, the powers of this animal were made subservient to purposes of public utility ; and Fischerstrom informs us, that, in the reign of Charles the Ninth, elks were made use of for the purpose of conveying couriers, and were capable of accomplishing, what would appear incredi- ble, namely, 36 Swedish miles, about 234 English miles, in a day, Mihen attached to a sledge, which far surpasses the powers Scientific Intelligence.^- Zoology, 393 of the rein-deer. Darelli, a Swedish gentleman, published, some years ago, in the Transactions of the Academy of Sciences (Ve- tenskaps Academiens Handlingar), an interesting account of the habits, as well as singular docility and sagacity, displayed by a ' male elk, which, having been caught when young, upon his property, had been kept domesticated by him for many years. He introduces some curious speculations upon the uses to which these animals might be applied in time of war ; asserting, that a single squadron of elks, with their riders, would put to immediate route a whole regiment of cavalry ; or, employed as flying artil- lery, would, from the extraordinary rapidity of their motions, ensure the victory. The facility with which they are able to cross rivers and broad fiords, would render them likewise ex- tremely serviceable during a campaign, for the purposes of re- connoitring, conveying despatches, &c. A remarkably fine liv- ing specimen was recently sent over to this country from Ver- meland, where it had been taken when young, and was intend- ed as a present to his Majesty from Mr Wise, the consul-gene- ral of Sweden. Notwithstanding it was tractable to a singular degree, an accident most unfortunately befel it, owing to the stupidity and neglect of its attendants, when on its road be- tween Harwich and London, which was the occasion of its death. Although not more than two years old, it was of the surprising height of nineteen hands (i. e. 6 feet 4 inches), being thus very much above what is considered a great height for a horse, viz. sixteen hands ; it had still not arrived at its full growth, and, in all probability, would have attained an additional foot *. — Brooke's Travels in Lapland-^-. ARTS. 40. Green Fire. — This is made of equal parts of pounded nitrate of barytes and charcoal, well mixed together. It is used in ghost scenes, and gives out a greenish flame with a white smoke, and makes the covmtenance assume a deadly hue. 41 . Object of Embalming in Egypt. — A French chemist, M. Julia Fontenell, in a discourse delivered on occasion of the open- ing of an Egyptian Mummy in the Theatre of the Sorbonne at • Mr Pennant says, that the greatest height of the elk is seventeen hands, f A fine skeleton of the elk has been lately presented to the Edinburgh College Museum, by Mr Seton of Stockholm. 394 Scientific lutellig'ence. — ArU'. Paris, has delivered an opinion respecting the cause of embalm- ing in Egypt, that the Egyptians were led to it from physical ne- cessity. During four months of every year, the inundation of the Nile covers almost entirely the wholeof the surfaceof Egypt which is under cultivation. Under the reign of Sesostris, for an extent of territory of about 2250 square leagues, there would be a popu- lation of 6222 persons per square league, which w ould present 350,000 deaths per annum. These corpses must be gotten rid of, either by burning or by interment ; if the latter, they must be burned around the inhabited vspots, or in those which were inundated by the Nile, and then the decomposition of these bodies would have been a source of infection ; and for burning bodies there was a want of a sufficiency of wood. But the soil of Egypt abounds in springs of natron, and sub-carbonate of soda ; and as this substance is antiseptic, the inhabitants were natu- rally led to preserve witli it the corpses of the dead. In sup- port of this opinion, that sanitary views alone were the cause of embalment, down to the third century, before the christian era, when the practice was discontinued, M. Fontenelle observed, that, during the whole of that period, the plague was unknown in Egypt, where it is now endemic. 42. Lithographic Drawings of the celebrated Masters of different Schools, — Lithographic impressions of select draw- ings, by celebrated masters of all the schools, from the col- lection of the Archduke Charles, will speedily appear. This collection contains 14,000 original designs. The work will be published in livraisons, the number of which is not yet fixed. The early numbers will contain the Schools of Italy and Ger- many, and the latter the Schools of France and the Netherlands. A part will be published monthly. Each plate will be 26 inches long, by 18 broad. — Foreign Quarterly Review^ No. I. 43. On Mosaic Printing. — Senefelder, the inventor of Li- thography, has discovered a new mode of printing from paint- ings, which has all the quahties of those executed in oil. He has termed it Mosaic Printings and it is remakable for its beau- ty, lightness, and durability. 44. Fluid Telescopes, — Our readers will be pleased to Jearn that the construction of fluid telescopes, first projected by Dr Blair, forms at present a subject of considerable interest in Lon- don, Messrs W. and T. Gilbert, of Leadenhall Street, having Scie7itific Intelligence. — Statistics. 395 lately completed two, one of 6 inches, and the other of 3| aper- ture, which, as experimental results, are very satisfactory. The principle of the construction, which is Professor Barlow's, pos- sesses some novelty, and some important advantages, one of the most valuable being, that the telescope may be made considera- bly shorter than in the usual refractors, without a correspond- ing diminution of the focal powers, the focal length being near- ly double the length of the tube, as in the Gregorian reflector. We are assured tliat, with the small telescope, Avith a power of only 46^ polaris is distinctly doubled, and the small stars well defined ; and with higher powers, all the double stars of Sir William HerschePs third class are distincdy separated, and se- veral of the second class ; the larger telescope has not at present been submitted to so severe a test, but neither the maker, nor the projector, has any doubt of its answering equally well, and be- ing proportionally more powerful. Our correspondent, however, informs us, that, in the larger telescope, in particular, a second- ary spectrum is formed, from the irrationality of the original spectra, which is very obvious on a Lyra and Arcturus, although scarcely perceptible with less luminous stars; but this, it is ex- pected, will be removed by the mixture of other fluids. We hope, in our next number, to be able to explain more particular- ly the nature of this novel construction, as well as to announce the completion of one of much larger dimensions, as we under- stand it to be the intention of the spirited and ingenious makers to carry the construction to its utmost possible limits. We can only say they have our best wishes. It is always gratifying to see men of sound theoretical knowledge combining their efforts with others of practical skill and ingenuity, because, fi'om such combination of talent, we have every reason to expect valuable results. In the present instance, these interesting experiments are in excellent hands, and we cannot but look forward with confi- dence to their ultimate success. STATISTICS. 45. View of the Scientific and Literary State of different parts of Italy. (Revue Encyclop. Jan. 1827.) — In this ac- count of the State of Literature and Science in Italy, there is more said of the former than of the latter ; nevertheless, it shews S96 Scientific Intelligeiice. — Statistics. the constantly increasing progress of civilization in the different parts of that country. The two cities which present the most brilliant results in this respect are Florence and Milan ; they cultivate at once, and nearly with the same success,, the sciences, letters and arts *. In each of these two capitals vast enterprizes are entered upon for the publication or reproduction of esteem- ed works, new or old. Venice, formerly so active, seems now immersed in torpidity, unless with respect to the fine arts. The same is to be said of Genoa. Turin publishes memoirs, but with less zeal or splendour than Milan. Naples furnishes excellent works on the antiquities which surround it. What shall we say of Rome ? There is nothing of importance done there now, excepting in philology. It would be unjust to over- look Bologna, which is distinguished in the medical sciences, in mathematics and painting. In fine, the great number of Aca- demies, and learned and literary societies existing in Italy, proves that, in that country, the improvement of the human mind is every where considered as an important object. 46. Number of Crimes in Prussia. — In the Annates sur V Administration interieure de VEtat^ a very useful work, pub- lished by M. Kamps, there is contained some very interesting information respecting the crimes committed in Prussia. It is truly remarkable how much their number varies according to the different provinces. The province of Pomerania stands in the first rank as to morality. Among 4,760 individuals, there was only a single criminal. In the lowest rank are found the cities of Cologne, Aix-la-Chapelle, Dusseldorf and Munster, where one criminal is reckoned in every 400 individuals. It is the same with regard to robberies. In 6432 Pomeranians, and in 3000 inhabitants of Eastern and Western Prussia and Sile- sia, there is not more than one robber. But there is reckoned one for every 800 inhabitants of Treves and Coblentz ; and the same for every 400 inliabitants of Aix-la-Chapelle, Dusseldorf, Cologne and Munster. Wherever there are most holidays, there also are most robberies. Other crimes, however, are pro- portionally rarer in those cities. At Aix-la-Chapelle and Co- • Each of them publishes a great number of journals, especially Milan, in which there are so many as twenty on science or literature. Scientific Intelligence. — New Publications. 397 logne there is but one murderer out of 60,000 individuals, and the same out of 35,000 in Saxony and in the country of Muns- ster. But the country in which most crimes are committed is the district of Marienwerder, where, out of 25,000 individuals, there is one murderer. NEW PUBLICATIONS. Illustratimis of Zoology, being representations of new, rare, or otherwise remarhable subjects of the Animal Kingdom, drawn and coloured after Nature, with Descriptive Letter-Press. By James Wilson, Esq. F. R. S. E. Member of the Wer- nerian Natural History Society. William Blackwood, Edin- burgh, and T. Cadell, London. No. 11. XN our last Number we gave a brief account of the com- mencement of a periodical work, the first of its kind attempted in Scotland, embracing the whole range of Zoology, and of a nature sufficiently general and miscellaneous to prove attractive to a numerous class of readers, though devoted to the illustra- tion of a single science, — that of Natural History. Of its plan and execution we augured well, and our hopes have been in- creased, rather than diminished, by a perusal of the second Number. We again, therefore, recommend it to the attention of our readers, not only as a novel and highly interesting addition to our stock of scientific publications, but as an earnest and forerunner of a more general taste for the pursuits of natural history, than has hitherto been manifested in Scotland. In- deed, the genius of the artist, and the skill of the typographer, have been all along so sparingly employed in aid of the natu- ral sciences in this quarter of the island, that little can be said either in reprobation of the lukewarm patronage of the pub- lic, or in favour of such works as may be alleged to have suf- fered from the darkness of an undeserved oblivion. From the well known fact, however, that many volumes, in various depart- ments of literature, of the most elegant and ornamental kind, had proceeded from the Scotch press, it might have been fairly inferred, that it was rather from a deficiency of pub- 4 Scientific Intelligence. — New Publications. lie encouragement than any want of skill in the profession, that so little had been done in illustration of scientific subjects. We are sanguine that a better, or more extended, taste is now pre- vailing, and that the success attending the execution of such works as that now before us^ will be commensurate with the higher and more improved character which they have assumed. Without quoting the tritest maxim of political economy, it may indeed be assumed as certain, that the advantage wiU prove re- ciprocal, and that a more general taste for ornamental works of Natural History will be met by corresponding exertions on the part of those whose productions will reflect no discredit either on the art, the science, or the literature of Scotland. The present Number of Mr Wilson's Illustrations contains six coloured representations of remarkable animals. The first Plate is devoted to the Asiatic and African Orang-Outang, and is engraved after admirable drawings from life by the late Mr Hov/itt. The figures of the Asiatic species especially, pour- tray the character and aspect of that singular animal in a man- ner superior to what we have yet observed in any former repre- sentation of it. They greatly excel that of Mr Sydenham Ed- wards, which we believe was taken from the same individual. " Allied," Mr Wilson observes, " to the human race by a grotesque re- semblance in their form and structure, the principal species of this numerous and diversified genus (Simla)., familiarly called Apes, Monkeys, and Baboons, have for a long period excited the attention of the philosophical anatomist and natural historian. The labours of Camper, Tyson, and Tilesius, of Geof- froy, Lacepede, Audebert, Blainville, and the Cuviers, have been successive- ly bestowed 6n the illustration of this tribe of animals ; and though many points in their history still remain obscure, a considerable advancement has no doubt been recently made towards their complete elucidation. It would take long to tell of the numerous subgenera which have been formed in the course of their systematic arrangement ; and as these may be more conve- niently discussed in a future Number of this work, in which I shall have oc- casion to describe some of the monkey tribe, properly so called, I shall con- fine my observations, for the present, to the first division of the genus Sinda^ viz. the Greater Apes, or Orang-outangs. " It appears probable, that the ancients were not acquainted with either the African or Asiatic orang-outang, although a passage in the Periplus Han- nonis has been supposed by some authors to indicate the chimpanze with suf- ficient accuracy to establish their knowledge of that species. The Pithecos of the Greeks, and the Simia of the Latins, of which we have notices of a suffi- ciently imperfect nature in the works of Aristotle and Pliny, seems to have been no othet than the magot or Barbary ape (the Simia Innuus of modern Scientific Intelligence.— -New Pubhcations. S99 times), which, in a state of domestication, breeds in France, and still occurs in a wild state, on the least accessible parts of the rock of Gibi-altar. No doubt, in the pithecus of Galen, a double opening is said to have been observed in the cavity of the larynx, a character believed by many to be peculiar to the orang-outangs, and .Camper was certainly of opinion that that ancient physician had anatomised and described the last-named animal ; but M. De Blainville has lately exhibited conclusive evidence, that the subject of Ga- len's observations was no other than the common magot. The Simla Porca. ria^ as indicated by Aristotle, appears to have been a baboon ; and, in regard to the Kebos or varied monkey, the Callithina (beautiful-haired) or green mon- key, and the Cercopithecos vr long-tailed guemon, which, I believe, constitute the remaining species of the genus described by ancient writers, none of these has ever been confounded with the subjects of the present inquiry. The orangs, or greater apes, have been divided into several subgenera, which dif- fer in locality, colour, and relative proportions, but agree in having the hyoid bone, the liver, and the ccecum, formed like those of man." Our author then enters upon the first division of the great Linna3an genus Simia, viz. the subgenus Troglodytes, of which he gives the characters, and then details the natural history of the only species which it contains, the Man of the Woods, or Homo sylvestris of Tyson, commonly called the Black Orang-outang. These details are commenced with the fol- lowing introductory paragraph : " Although the Black or African Orang of all known animals bears the greatest resemblance, both in face and figure, to the human species, and, in consequence of this resemblance, has not only been honoured by the foremost place in our arrangements of the brute creation, but even placed as co-ordi- nate with Man himself, he owes this elevation much more to his organic structure than to any real superiority in his mental endowments. In a state of domestication, he is far surpassed in acquired wisdom both by the dog and the elephant ; and even the much- vaunted instinctive intelligence of his na- tural condition is inferior to that of several four-footed creatures. That his movements and modes of life should approximate in some degree to those of the ' nobler savage,' is a necessary consequence of his physical structure, by which he is also enabled, in captivity, to imitate more closely than any other animal, the external actions of mankind ; but the moral and intellectual at- tributes with which he has been gifted, must be referred to the fertile imagi- nation of the natural historian. An historical account of the Orang-outang would indeed prove little else than a summary of error and misrepresen- tation. To say nothing of the female described by Dr Bontius, the modesty of which was so great, that she could not endure to be looked at by such of the learned Esculapian's male friends as were strangers to the domestic circle ; even the sage Linncsus, in an early edition of the Systema Natures., has record- ed his Homo nocturnus, or Night Wanderer, as thinking after the fashion of an intelligent creature, and giving utterance to his thoughts in a whistling language. The history of these animals, as given by Buffon,-is equally un- 400 Scientific Intelligence. — N'ezv Publications. satisfactory. He evidently confounds two distinct kinds, the Chimpanze, Jocko, or African Orang-outang, and the red or Asiatic species ; — the former of which is the Simla troglodytes (Plate V. Fig. 2.), the - latter the Simla saty- rus (Plate V. Fig. 1. and 3.) of systematic writers. It seems the more re- markable that these two creatures should have been thus blended into one, as they not only differ so widely in their external characters, but have an entirely different geographical location ; the Chimpanze, or Black Orang, being confined to Africa, and occurring chiefly in the districts of Congo and Angola, whereas the Red Orang is an inhabitant of the south-eastern parts of Asia, and the great Islands of Borneo and Sumatra. Passing by the im- postures of Gamelli Carreri, it may be asserted, that the equally amusing, and scarcely more authentic, narratives, which BufFon and others have com- ^ piled from the writings of Francis Pyrard, Father Jarrie, Guat, and Froger, must be consulted with an extreme degree of caution, by whoever seeks to study the genuine natural history of these extraordinary creatures. We have in truth little of what is really authentic, especially in the history of the African Orang ; the more detailed and accurate narration of some recent observers being applicable chiefly to the Asiatic species." The history of the Black Orang is followed by that of the brown or Asiatic species, of which many amusing particulars are given from the pen of the late Dr Clarke Abel. The se- cond plate represents a South American bird, of very rare oc- currence, called the Quezal, which Mr Wilson classes with the Curucui, under the name of the Golden Trogon. This is the species which has lately excited so much admiration in the Edin- burgh Museum. The following is its description and history, as given by Mr Wilson : " Head, neck, breast, back, scapulars, wing and tail coverts, of the richest golden-green, with vivid reflections of blue and yellow. Primary and secon- dary wing-feathers very dark mulberry-brown, approaching to black. In- ferior parts, and imder tail-coverts, of a deep carmine-red. Tail black, ex- cept the two outer feathers, which are white, with black quills and bases. The two central upper coverts of the tail of extraordinary length and bril- liancy. Bill in the living bird orange-red, changing some time after death to yellowish horn-colour. Feet and legs dark brown or black. Tarsi short, and covered with blackish-brown feathers, edged with golden-green. Claws brown. Colour of the iris unknown. " Of the splendour of this rare and remarkable species, neither description nor delineation can convey any adequate idea. The greater proportion of its plumage is apparently composed of burnished gold. The head ornamented by a brilliant crest of decomposed barbs, the wing-coverts falling in flakes of golden-green over the deep purplish black of the primary and secondary quill- feathers, the rich carmine of the lower parts bestowing a warmth and depth of effect which no Venetian painter ever equalled ; and the long, waving, and highly metallic feathers of the tail-coverts extending more than twice the length of the whole body, present a combination of beauty probably unex- ampled among the feathered tribes. Scientific Intelligence. — New Publications. 401 " We unfortunately know little or nothing" of the natural history of this beautiful bird. It is greatly prized by the native tribes of those countries in which it occurs, who make use of its skin as an ornament of dres