January 47 30 38,3 53 Deg. Deg. Deg. Deg. Deg. Deg. Inches. Inches. Inches. Deg. Deg. Deg. Inches. 43 47,1 30,66 29,18 29,88 75 61 70,2 0,779 June 70 53 60,2 1,756 50 59,8 1,955 51 58,6 66 57 61,1 30,47 29,38 29,94 79 July 69 53 61,3 69 59 63,0 30,44 29,44 29,96 72 August 69 53 594 71 58 63,0 30,22 29,70 29,98 76 53 63,6 1,480 September 64 44 57,7 83 58 64,1 30,33 29,72 30,07 76 53 62,5 0,634 October 59 37 50,7 65 53 57,1 29.53 30,07 28,63 77 58 67,3 3,137 November 52 27 42,5 55 46 52,3 30,38 28,99 29,85 80 62 70,71,855 December 50 25 36,5 57 40 46,8 30,54 28,95 29,96 79 63 72,0 0,188 Whole year 49,2 55.8 29,79 65,8 18,348 The quicksilver in the bason of the barometer, is 81 feet above the level of low water spring tides at Somerset-house. + The Society's Rain Gage is 114 feet above the same level, and 75 feet 6 inches above the surrounding ground. By another Rain Gage placed 11 feet 6 inches lower, the quantity of rain appears to have been 22,03 inches. Variation of the Magnetic Needle, October, 1812, 24° 16′ 30′′ West. TRANSACTIONS, OF THE ROYAL SOCIETY OF LONDON. FOR THE YEAR MDCCCXIII. PART II. LONDON, PRINTED BY W. BULMER AND CO. CLEVELAND-ROW, ST. JAMES'S; AND SOLD BY G. AND W. NICOL, PALL-MALL, BOOKSELLERS TO HIS MAJESTY, AND PRINTERS TO THE ROYAL SOCIETY. MDCCCXIII. XIX. AN Account of some organic Remains found near Brentford, Middlesex. By the late Mr. William Kirby Trimmer. Communicated in a Letter from Mr. James R. Trimmer to the Right Hon. Sir Joseph Banks, Bart. K. B. P. R. S. p. 131 XX. On a new Construction of a Condenser and Air-pump. By the Rev. Gilbert Austin. In a Letter to Sir Humphry Davy, LL.D. F.R. S. p. 138 XXI. On the Formation of Fat in the Intestines of living Animals. By Sir Everard Home, Bart. Presented by the Society for promoting the Knowledge of Animal Chemistry. p. 146 XXII. On the colouring Matter of the black Bronchial Glands, and of the black Spots of the Lungs. By George Pearson, M.D. F.R. S. p. 159 XXIII. Experiments on the Alcohol of Sulphur, or Sulphuret of Carbon. By J. Berzelius, M. D. F. R.S. Professor of Chemistry at Stockholm; and Alexander Marcet, M. D. F. R. S. one of the Physicians to Guy's Hospital. p. 171 XXIV. On the Means of procuring a steady Light in Coal Mines without the danger of Explosion. By William Reid Clanny, M.D. of Sunderland. Communicated by William Allen, Esq. F.R.S. p. 200 XXV. On the Light of the Cassegrainian Telescope, compared with that of the Gregorian. By Captain Henry Kater, BrigadeMajor. Communicated by the Right Hon. Sir Joseph Banks, Bart. K. B. P. R. S. p. 206 XXVI. Additional Observations on the Effects of Magnesia in preventing an increased Formation of Uric Acid; with Remarks on the Influence of Acids upon the Composition of the Urine. By XXVII. Additions to an Account of the Anatomy of the Squalus Maximus, contained in a former Paper; with Observations on the Structure of the Branchial Artery. By Sir Everard Home, XXVIII. Some further Observations on a new detonating Sub- stance. In a Letter from Sir Humphry Davy, LL.D. F. R. S. V. P. R. I. to the Right Hon. Sir Joseph Banks, Bart. K. B. XXIX. Experiments on the Production of Cold by the Evapora- tion of the Sulphuret of Carbon. By Alexander Marcet, M. D. F. R. S. one of the Physicians to Guy's Hospital. P. 252 XXX. On a saline Substance from Mount Vesuvius. By James Smithson, Esq. F. R. S. XXXI. Some Experiments and Observations on the Substances produced in different chemical Processes on Fluor Spar. By Sir Humphry Davy, LL.D. F. R. S. V. P. R. I. XXXII. Catalogue of North Polar Distances of Eighty-four principal fixed Stars, deduced from Observations made with the Mural Circle at the Royal Observatory. By John Pond, Esq. Astronomer Royal, F. R. S. XXXIII. Observations of the Summer Solstice, 1813, with the Mural Circle at the Royal Observatory. By John Pond, Esq. Astronomer Royal, F. R. S, Presents received by the Royal Society, from November 1812 to |
