Iviii Meteorological Observations. 
Abstract of the JResults of the Hourly Meteorological Observations 
talcen at the Surveyor General's Office, Calcutta, 
in the month of December, 1860. 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. — (Continues,.) 
Date. 
Mean Wet Bulb Ther- 
mometer. 
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 Humi- 
dity, complete satura- 
tion being unity. 
o 
0 
o 
o 
Inches. 
T. gr. 
T. gr. 
i 
64.1 
6.2 
61.0 
9.3 
0.541 
5.95 
2.13 
0.74 
2 
Sunday . 
3 
61.9 
6.8 
58.5 
10.2 
.498 
.549 
.20 
.71 
4 
63.1 
5.8 
60.2 
8.7 
.527 
.80 
1.94 
.75 
5 
64.5 
5.2 
61.9 
7.8 
.557 
6.13 
.80 
.77 
6 
64.9 
4.7 
62.5 
7.1 
.568 
.26 
.64 
.79 
7 
64.0 
6.3 
60.8 
9 5 
.537 
5.90 • 
2.18 
.73 
8 
63.4 
6.0 
60.4 
9.0 
.530 
.84 
.02 
.74 
9 
Sunday . 
10 
60.6 
6.9 
56.5 
11.0 
.465 
.14 
.28 
.69 
11 
59.6 
6.6 
55.6 
10.6 
.452 
.01 
.11 
.70 
12 
59.3 
6.4 
55.5 
10.2 
.450 
.00 
.02 
.71 
13 
58.9 
6.6 
54,9 
10.6 
.441 
4,89 
.09 
.70 
14 
59.4 
7.0 
55.2 
11.2 
.445 
.94 
.23 
.69 
15 
58.9 
6.9 
54.8 
11.0 
.440 
.87 
.17 
.69 
16 
Sunday . 
17 
58.5 
6.6 
54.5 
10.6 
.435 
.83 
.06 
.70 
18 
59.1 
6.0 
55.5 
9.6 
.450 
5.00 
1.89 
.73 
19 
60.0 
6.3 
56.2 
10.1 
.461 
.11 
2.04 
.72 
20 
60.8 
6.1 
57.1 
9.8 
.475 
.25 
.03 
.72 
21 
59.1 
8.0 
54.3 
12.8 
.432 
4.78 
.54 
.65 
22 
56.4 
7.4 
51.2 
12.6 
.389 
.33 
.28 
.66 
23 
Sunday. 
24 
62.1 
5.6 
58.7 
9.0 
.501 
5.54 
1.92 
.74 
25 
61.7 
6.1 
58.0 
9.8 
.489 
.40 
2.08 
.72 
26 
61.0 
5.9 
57.5 
9.4 
.481 
.33 
1.95 
.73 
27 
62.0 
6.5 
58.7 
9.8 
.501 
.53 
2.12 
.72 
28 
61.1 
6.6 
57.1 
10.6 
.475 
.24 
.22 
.70 
29 
60.2 
7.6 
55.6 
12.2 
.452 
.00 
.48 
.67 
30 
Sunday . 
31 
56.1 
7.5 
50.8 
12.8 
.383 
4,28 
.29 
.65 
All the Hygrometrical elements are computed by the Greenwich Constants. 
