Two orders of als. PRESIDENT, Robert Jameson, Esq. F. R. S. Prof. Nat. Hist. Edin. VICE PRESIDENTS, Wm. Wright, M. D. F. R. S. John Barclay, M. D. F.R.S. Tho.Thompson, M. D. F. R. S. Patrick Walker, Esq. Treasurer. Pat. Neil. Esq. Secretary. Council, nine in number, viz. The above office bearers, with Charles Andersen, Esq. F. R. C. S.; and Lieut. Col. Fullerton, of Bartonholm. Sir Joseph Banks, President of the Royal Society of London; Richard Kirwan, Esq. President of the Royal Irish Academy; and Professor Werner of Freyberg, were elected honorary members. The following foreign members have been elected, Professor Karsten, Berlin; Professor Klaproth, Berlin; Mr. Von Humboldt, Berlin; Mr. Von Buch, Berlin; Mr. F. Mohs, of Stiria; Mr. Herder, Mr. Friesleben, and Mr. Meuder, of Saxony. At the last meeting of the Wernerian Natural History Soveins of miner- ciety, Professor Jameson read a description of contempora neous or enclosed veins. He divided veins into two classes. The first class comprehends true veins, the second contempora neous or enclosed veins. True veins characterized. Contempora beous or enclosed veins. True veins, he remarked, excepting when the strata or beds are of uncommon thickness, traverse many different strata or beds; and, although we do not always observe them open at the surface of the earth, they invariably open at the surface of the formation or series of formations they traverse; thus the outgoings or openings of certain metalliferous veins, that traverse clay, slate, and mica slate, are sometimes covered by the second porphyry formation. Contemporaneous or enclosed veins are in general confined to individual beds or strata, and are completely enclosed in them, or in other words wedge out in every direction in the bed or stratum in which they are contained. After detailing the various characters of true and contemporaneous veins, the Professor next described the contemporaneous veins that occur in different great rock-formations, beginning with granite, and ending with the newest fleetz trap formation. He next explained the mode of formation of these veins. When describing the contemporaneous veins, that occur in gneiss, he remarked, that certain varieties of veni genous gneiss bear a striking resemblance to granite, and hence have been frequently confounded with it. This led him to point out the characters by which true granite veins are distinguished from veins of granitic gneiss. As connected with this part of the subject he examined the Remark on the Huttonian facts, on which the Huttonian theory of granite is founded; and proved by a detail of his examination of the appearances described by Dr. Hutton, Professor Playfair, and others, that the supposed granite veins, shooting from subjacent granite into superincumbent rocks, are merely veins of granitic gneiss accidentally in contact with grauite. System of Professor Jameson has just published the third volume of ProfessorJame. his System of Mineralogy, under the title Elements of Geog- son's Elements of Geognosy, nosy. The contents of this valuable work are as follows. or 3d vol, of his Chap. I, Description of the surface of the earth; chap. 2, Effects of water on the surface of the earth; chap. 3, Internal structure of the earth; chap. 4, General account of the different formations in regard to their succession and strati fication, and this illustrated by a short description of the Hartz and Saxon Erzebirge; chap. 5. Theory of the diminution of the waters of the globe-Description of overlaying formations-An investigation of the original contents of the waters of the globe, during the different periods of the earth's formation. The division of rocks into five classes; chap. 6, class 1, Primitive rocks; chap. 7, class 2, Transition rocks, chap. 8, class 3, Flatz rocks; chap. 9, class 4, Alluvial rocks; chap. 10, class 5, Volcanic rocks; chap. 11, Mineral repositories; chap. 12, Relative age of metals, and general inferences, These are followed by a table of 32 pages, containing the relative antiquity and geognostic relations of simple minerals: also an extensive table of the most most remarkable heights of mountains, hills, and lakes in different parts of the world, and a table of volcanoes. The volume is concluded with a series of notes explanatory of passages in the text, and referring to the Huttonian theory of the earth. TO CORRESPONDENTS. It would be highly gratifying to the author of this Jour nal, to publish a complete Index of the whole to the present time; and there is no motive for hesitation, but the probability, that the heavy expense attending it might not be indemnified in the actual sale. It is, however, under considera tion. The Meteorological Journal will appear in the first number of the next volume; and every attention that circumstances can admit will be paid to the suggestions received in the favour from an anonymous correspondent. The errour of a word which he notices, is of the press, and we trust that errours of this description are not very frequent with us. The letter from Mr. Garnett, of New York, was received too late for insertion this month, but will appear in our next number. His favours will be always acceptable. The enclosure to the Astronomer Royal was immediately forwarded. JOURNAL OF NATURAL PHILOSOPHY, CHEMISTRY, AND THE ARTS. SUPPLEMENT TO VOL. XIX. ARTICLE I. Remarks on the total Eclipse of the Sun, June 16, 1806; with some new Methods of finding the Sun or Moon's Meridian Altitude, and the approximate Time, by Altitudes taken near the Time of Noon. In a Letter from J. GARNETT, Esq. Editor of the American Nautical Almanac, I SIR, To Mr. NICHOLSON. AM a constant reader of your valuable Journal, but Mistake of the have only lately received your No. 75, in which, from the reporter of the proceedings of proceedings of the French Institute, you have copied Mr. the French Institute. Ferrer's observation of the total eclipse of the sun at Kinderhook. As I assisted him in the observation, I beg leave to remark a considerable errour, made by you or the French Institute, which places Kinderhook upward of 7 to the eastward of Paris, instead of upward of 5 to the westward. b. m. S. You mark the time of the conjunction 11 45 whereas it was, apparent time - 23 25 33.2, as you will perceive by the printed calculation enclosed. Before * I copied this time from the Magazin Encyclopédique, and on referring to the Journal de Physique, where there is likewise a VOL. XIX.-SUPPLEMENT. Y brtef Limb of the moon illumi nated before Before the end of the total eclipse, the west limb of the moon began to be illuminated, and the light increased so the end of the rapidly, that I at last mistook it for the sun's egress, and eclipse. called the time to Mr. Ferrer: but he saw the errour, and still kept his eye to the glass, when the first solar ray nearly blinded him. Whence this? American Nau Whence could proceed this illumination? from a lunar or solar atmosphere? In the American Nautical Almanac, which I have pubtical Almanac. lished here since 1803, I have given the moon's declination for every six hours, instead of twelve; which I did before I knew it was done in France, and for the same reason. I am, with the greatest esteem, Sir, Your obedient Servant JOHN GARNETT. New York, North America. brief notice of it, I find the time set down 11 25' 33". This is evidently according to the popular, not astronomical notation of time; and in a work intended for the general reader, as well as the astronomer, it was perhaps preferable. It appears however to have occasioned the errour of the French reporter of the proceedings of the National Institute. ELEMENTS |