C 26 3 
1821. 
Thermometer 
without. 
Thermometer 
within. 
Barometer. 
* 
Six’s Thermometer. 
Rain.t 
Greatest 
height. 
Least 
height. 
Mean 
height. 
Greatest 
height. 
Least 1 
1 height 
Mean 
height. 
Greatest 
height. 
Least 
height. 
Mean 
height. 
Greatest 1 
height. 
Least 
height. 
Mean 
height. 
Deg. 
Deg. 
Deg. 
Deg. 
Deg. 
Deg. 
Inches. 
Inches. 
Inches. 
Deg. 
Deg. 
Deg. 
Inches. 
January 
51 
25 
39-5 
58 
38 
49,0 
30,76 
28,98 
30,01 
52 
25 
39-7 
1,854 
February 
59 
25 
38,0 
59 
42 
5°,3 
3°»77 
29,21 
30,23 
6 j 
25 
38,4 
0,278 
March 
57 
34 
44,7 
69 
48 
5 6 >4 
3°’38 
29,06 
29,63 
59 
3 1 
45,2 
1,917 
April 
7 i 
37 
53,5 
6 9 
51 
58,6 
3 °A 2 
29,25 
29,65 
72 
3 6 
53 A 
1,137 
May 
66 
42 
5 3»3 
65 
52 
57,8 
3 0 , 2 S 
29,17 
29,86 
7 ° 
37 
52,7 
1,093 
June 
72 
47 
57*7 
67 
52 
59,4 
30,32 
29,57 
30,03 
73 
43 
57,0 
1,833 
July 
72 
5 1 
60,9 
7 i 
57 
62,4 
30,30 
29,56 
29,91 
74 
46 
60,6 
2,236 
| August 
76 
5 & 
6 5,3 
79 
61 
66,6 
30,19 
29,47 
29,92 
77 
5 ° 
%,7 
2,097 
j'September 
7 1 
49 
62,4 
71 
57 
64,0 
30,20 
29,49 
29,85 
75 
46 
62,0 
I, 8 lO 
'October 
66 
43 
53,3 
67 
53 
57,4 
30,33 
29,11 
29,87 
68 
4 1 
52,7 
1,931 
November 
62 
35 
49,7 
63 
42 
56,8 
30,20 
29,21 
29,80 
6 3 
34 
49 , 6 
3,445 
December 
58 
37 
46,1 
60 
49 
54>3 
30,28 
28,18 
29,51 
58 
3 6 
45,8 
3,936 
Whole year 
52,0 
V-ri 
OO 
29,86 
5',8 
23,567 
* The quicksilver in the bason of the barometer is 8 1 feet above the level 
of low water spring tides at Somerset-house. 
f The Society’s Rain Gage is 114 feet above the same level, and 75,6 in- 
ches above the surrounding ground. 
