lx 
Meteorological Observations, 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of December, I860. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. — ( Continued.) 
Hour. 
Mean Wet Bulb 
Thermometer. 
| Dry Bulb above Wet. 
Computed Dew point. 
Dry Bulb above Dew 
point. 
Mean Elastic force of 
Vapour. 
Mean Weight of Va-! 
pour in a Cubic foot! 
of Air. • 
Additional Weight of 
vapour required for 
complete saturation. 
Mean degree of Hu- 
midity, complete satu- 
ration being unity, , 
0 
o * 
0 
0 
Inches. 
Troy grs. 
Troy grs 
Mid- 
night. 
59.3 
3.3 
57.0 
5.6 
0.473 
5.28 
1.09 
0.83 
1 
58.8 
3.2 
56.6 
5.4 
.467 
.23 
.02 
.84 
2 
58.3 
3.0 
55.9 
5.4 
.456 
.11 
.01 
.84 
3 
57.8 
2.9 
55.5 
5.2 
.450 
.05 
0.95 
.84 
4 
57.5 
2.7 
55.3 
4.9 
.447 
.02 
.89 
.85 
5 
56.9 
2.8 
54,7 
5.0 
.438 
4,92 
.90 
.85 
6 
56.6 
2.6 
54,5 
4.7 
.435 
.89 
.84 
.85 
7 
56,6 
2.7 
54.4 
4.9 
.434 
.87 
.87 
.85 
8 
58.3 
4.3 
55.3 
7.3 
.447 
5.00 
1.37 
.79 
9 
60.1 
5.8 
56.6 
9.3 
.467 
.18 
.88 
.73 
10 
61.9 
7.9 
57.9 
11.9 
.488 
.36 
2.59 
.67 
11 
63.2 
9.9 
58.2 
14,9 
.493 
.38 
3.41 
.61 
Noon. 
63.7 
11.9 
57 7 
17.9 
.485 
.26 
4.22 
.56 
1 
64.2 
12 9 
57.7 
19.4 
.485 
.25 
.67 
.53 
2 
64.6 
13.3 
57.9 
20.0 
.488 
.27 
.89 
.52 
3 
64.0 
13.4 
57.3 
20.1 
.478 
.17 
.84 
.52 
4 
63.3 
11.9 
57.3 
17.9 
.478 
.20 
.17 
.56 
5 
63 5 
9.7 
58.6 
14,6 
.499 
.45 
3.37 
.62 
6 
63.5 
6.9 
60.0 
10.4 
.523 
.75 
2.35 
.71 
7 
62.6 
5.6 
59.2 
9.0 
.509 
.63 
1.95 
.74 
8 
62.1 
4,5 
59.4 
7.2 
.513 
.68 
.53 
.79 
9 
61.2 
4.2 
58-7 
6.7 
.501 
.56 
.39 
.80 
10 
60.6 
3.8 
57 9 
6.5 
.488 
.41 
.33 
.80 
11 
59.9 
3.6 
57.4 
6.1 
.480 
.35 
.20 
.82 
All tlie Hygrometrical elements are computed by the Greenwich Constanta. 
