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

June

53

37 44,9 58

50 53,4 30,22 29,49 29,92

76

54 63,6 1,060

66

47 55,1 65

55 58,9 30,32 29,57 29,87 77

52 64,0 1,932

70

51 58,6 66

July

August

69 53 61,3 69

57 61,1 30,47 29,38 29,94 79 53 60,2 1,756

59 63,0 30,44 29,44 29,96 72 50 59,8 1,955 69 53 59,4 71 | 58 63,0 30,22 29,70 29,98 58 63,0 30,22 29,70 29,98 76 53 63,6 1,480 58 64,1 30,33 29,72 30,07 76 53 62,5 0,634 53 57,1 29.53 30,07 28,63 77 58 67,3 3,137 46 52,3 30,38 28,99 29,85 80 62 70,71,855 40 46,8 30,54 28,95 29,96 79 63 72,0 0,188

September 64 44 57,7 83
October
59 37 507 65
November 52 27 42,5 55
December 50 25 36,5 57

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.