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Deg Deg. Deg. Deg. Deg. Deg. Inches. Inches. Inches. Deg. Deg. Deg. Inches.

[blocks in formation]
[blocks in formation]

32 41,7 57 44 50,3 30,38 28,94 29,77 76 59 66,8 1,870

[blocks in formation]

50 59,8 1,955

July 69 53 61,3 69 59 63,0 30,44 29,44 29,96 72
August 69 53 59,4 71 58 63,0 30,22 29,70 29,98 76
September 64 44 57,7 83 58 64,130,33 29,72 30,07 76

53 63,6 1,480

53 62,5 0,634

[blocks in formation]
[blocks in formation]

25 36,5 57 40 46,8 30,54 28,95 29,96 79 63 72,0 0,188

| |

Whole year

55,8

149,2

29,79

65,818,348 • 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.

CONTENTS.

a

p. 138

p. 146

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. 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. 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. 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. 200

p. 206 p. 305

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

William Thomas Brande, Esq. F. R. S. Prof. Chem. R. I.

Communicated by the Society for improving Animal Chemistry.

p. 213

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,

Bart. F. R. S.

p. 227

XXVHI. 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.

P.R.S.

p. 242

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.

p. 256

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,

p. 304

Presents received by the Royal Society, from November 1812 to

July 1813.

Index.

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