C 26 3 
Thermometer 
without. 
Thermometer 
within. 
Barometer. 
* 
Hygrometer. 
Rain.f 
fm 
GO 
9 
Greatest 
height. 
J Least 
j height. 
1 Mean 
height. 
Greatest 
height. 
! - St 
height. 
Mean 
height. 
Greatest 
height. 
Least 
height . 
Mean 
height. 
Greatest 
height. 
Least 
j height. 
Mean 
height. 
Deg. 
Deg. 
Deg. 
Deg. 
Deg. 
Deg. 
Inches. 
Inches. 
Inches. 
Deg. 
Deg. 
Deg. 
Inches. 
January 
45 
22 
34,0 
50 
39 
45,° 
3 0 '-47 
Qh 
00 
29.55 
78 
62 
7 1 >7 
°>435 
February 
54 
3 6 
43,6 
58 
48 
54 > 2 
30.51 
29,38 
29,81 
79 
63 
73.3 
0,675 
March 
63 
34 
4 7>6 
6 3 
48 
55 >i 
3 °> 3 ° 
28,90 
29,75 
79 
58 
70,2 
1,325 
April 
63 
40 
49’4 
67 
50 
5 5 >6 
30,60 
28,78 
29,66 
79 
55 
67,0 
l, 66 o 
May 
68 
5 ° 
5§>2 
69 
55 
60,4 
3°>33 
29,62 
29,74 
75 
56 
6 5>4 
0,667 
■June 
70 
5 2 
61,6 
70 
57 
63,2 
30,29 
29,30 
29,84 
74 
5 ° 
61,6 
X ,752 
July 
72 
55 
62,9 
72 
54 
65,0 
30,21 
29,62 
3°>°3 
67 
57’8 
1,581 
,August 
69 
5 2 
6 3>5 
69 
5 2 
63,0 
30,27 
29,56 
29,94 
7 ° 
5 i 
6 3>9 
0,222 
September 
70 
54 
64,7 
70 
54 
63,6 
30,20 
29,49 
29,97 
69 
56 
61,8 
0,776 
October 
6 3 
44 
53 ^ 2 
6 3 
49 
59 >° 
30,29 
2 9»33 
3°>33 
— 
— 
— 
x ,889 
November 
54 
29 
41,2 
58 
44 
5°>5 
30,61 
29,05 
2 9’97 
— 
— 
— 
G 33 6 
December 
48 
26 
3 8>7 
54 
4 i 
47^8 
30^54 
28,95 
2 9>79 
— 
— 
— 
0,650 
Whole year 
5 1 >6 
56,9 
29,86 
■ - 1 
12,968 
* 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 1 1 4 feet above the same level, and 75 feet 6 inches above 
the surrounding ground. 
Mean Variation of the Magnetic Needle, June, 18x5, 24° 17' 50" West. 
