]xvi 
Meteorological Observations, 
Abstract of the. Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of January, 1861. 
Daily Means, &o. of the Observations and of the Hygrometricat elements 
dependent thereon. — ( Continued .) 
Date. 
Mean Wet Bulb Thermo- 
meter. 
Dry Bulb above Wet. 
| Computed Dew Point. 
Dry Bulb above Dew 
Point. 
Mean Elastic force of 
Vapour. 
Mean Weight of Vapour 
in a cubic foot of Air. 
Additional Weight of Va- 
pour required for com- 
plete saturation. 
Mean degree of Humidity, 
complete saturation be- 
ing unity. 
i 
o 
o 
o 
o 
Inches. 
T. gr. 
T. gr. 
55.8 
7.2 
50.8 
12.2 
0.383 
4.28 
2.17 
0.66 
2 
57.3 
7.2 
53.0 
11.5 
.414 
.60 
.16 
.68 
3 
58.7 
7.8 
54.0 
12.5 
.428 
.73 
.46 
.66 
4 
58.9 
7.6 
54.3 
12.2 
.432 
.79 
.40 
.67 
5 
6 
60.1 
Sunday. 
6.7 
56.1 
10.7 
.459 
5.09 
.17 
.70 
7 
64.0 
5.1 
61.4 
7.7 
.548 
6.04 
1.74 
.78 
8 
66.9 
4.2 
64,8 
6.3 
.613 
.75 
.53 
.82 
9 
60.9 
4.4 
64.7 
6.6 
.611 
.70 
.63 
.80 
10 
67.6 
4,2 
65.5 
6.3 
.628 
.90 
.55 
.82 
11 
67.5 
3.9 
65.5 
5.9 
.628 
.90 
.45 
.83 
12 
Id 
65.4 
Sunday. 
5.1 
62.8 
7.7 
.574 
.31 
.82 
.78 
14 
63.9 
6.5 
60.6 
9.8 
.534 
5.86 
2.24 
.72 
1 ft 
63.7 
6.6 
60.4 
9.9 
.530 
.83 
.25 
.72 
16 
62.9 
6.4 
59.7 
9.6 
.518 
.70 
.13 
.73 
17 
63.2 
6.7 
59.8 
10.1 
.520 
.71 
.27 
.72 
IS 
65 5 
5.3 
62.8 
8.0 
.574 
6.31 
1.89 
.77 
19 
20 
68.3 
Sunday. 
5.1 
65.7 
7.7 
.632 
.91 
.96 
.78 
21 
66.0 
4.7 
63.6 
7.1 
.590 
.48 
.70 
.79 
22 
58.3 
8.3 
53.3 
13.3 
.418 
4,64 
2.57 
.64 
23 
58.2 
4,3 
55.2 
7.3 
.445 
.98 
1 .37 
.78 
21 
58.6 
6 2 
54.9 
9.9 
.441 
.90 
.93 
.72 
25 
54 8 
7.2 
49.8 
12.2 
.371 
.15 
2.10 
.66 
26 
27 
55.6 
Sunday. 
7.3 
50.5 
12.4 
•3S0 
.25 
.18 
.66 
28 
63.3 
6.9 
59.8 
10.4 
.520 
5.71 
.34 
.71 
29 
61.2 
7.9 
57.2 
11.9 
.476 
.21 
.54 
.67 
30 
57.2 
8.1 
52.3 
13.0 
.404 
4.49 
.44 
.65 
31 
57.2 
8.1 
52.3 
13.0 
.404 
.49 
.44 
.65 
All the Hygrometrical elements are computed by the Greenwich Constants. 
