n 36 '2 
1813. 
Thermometer 
without. 
Thermometer 
within. 
Barometer.* 
Hygrometer. 
Rain.t 
Greatest 
height. 
Least 
height. 
Mean 
heigiit 
; Greatest 
height. 
Least 
height 
Mean 
height. 
Greatest 
height. 
Least 
height. 
Mean 
height. 
Greatest 
height. 
1 Least 
1 height. 
Mean 
height. 
Deg 
Deg. 
Deg. 
Deg, 
Deg. 
Deg. 
Inches. 
Inches. 
Inches. 
Deg. 
Deg. 
Deg. 
Inches 
January 
47 
25 
36,2 
53 
' 42 
47 >o 
3°>49 
29,29 
50,10 
79 
65 
72,0 
0,33^ 
February 
53 
33 
43 .^^ 
57 
42 
52,1 
30^45 
29,17 
29,84 
76 
58 
69,2 
G 794 
March 
59 
30 
45>2 
63 
47 
53^4 
30.59 
29,73 
30,18' 
77 
55. 
67,2 
00 
0 
.April 
63 
36 
46,6 
65 
49 
54.6 
30,42 
29,26 
29.94 
76 
50 
^5,3 
1,104 
May 
66 
45 
55>8 
64 
52 
0 
00 
30,15 
29,47 
29,77 
80 
55 
65,3 
2,630 
June ' 
70 
51 
55,9 
69 
57 
61,8 
30,30 
29,53 
30,01 
68 
52 
61,0 
G35I 
July 
73 
52 
61,9 
73 
59 
64,5 
30,29 
29.54 
29,87 
71 
53 
62,5 
2,092 
, August 
70 
50 
61,4 
72 
61 
65,6 
30,38 
2955 
30,09 
72 
51 
60, 1 
0,565 
September 
64 
45 
56,9 
74 
57 
61,8 
30,32 
29,12 
29,99 
73 
56 
64,4 
0,861 
October 
62 
33 
49,6 
63 
44 
54-5 
30.15 
28,67 
29,63 
8i 
59 
68,7 
3,387 
November 
53 
31 
42,5 
58 
46 
51,8 
30,35 
29,07 
29,77 
75 
62 
68,4 
0,947 
December 
50 
26 
38,3 
53 
38 
47’7 
50,53 
29,09 
29,79 
80 
64 
73, « 
0,328 
Whole year 
49 ’" 
56,1 
29,91 
66,4 
15,953 
* The quicksilver in the bason of the barometer, is 81 feet above the level ot low water 
spring tides at Somerset-house. 
f i'he Society’o Rain Gage is 114 feet above the same level, ai’.d 75 feet 6 inches above 
the surrounding ground. 
By ai'iother Rain Gage placed at a few feet distant from the former and 1 1 feet 6 inches 
lower, the .quantity ol rain this year appears to have been 18,296 inches. 
Variation of the Magnetic Needle, September, 1813, 24® 16' 40" West, 
