• • 
11 
Meteorological Observations. 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office , Calcutta , 
in the month of April , 186 J. 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon.— fContinued.) 
1 
1 
1 
Date. 
Mean Wet Bulb Ther¬ 
mometer. 
Dry Bulb above Wet. 
Computed Dew Point. 
Drv 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 
o 
o 
o 
Inches. 
T. gr. 
T. gr. 
1 
78.0 
8.9 
73.5 
13.4 
0.814 
8.67 
4.5S 
0.65 
2 
76.1 
9.8 
71.2 
14.7 
.756 
.05 
.82 
.63 
3 
75.0 
11.8 
69.1 
17.7 
.706 
7.50 
5.71 
.57 
4 
77.5 
7.3 
73.8 
11.0 
.822 
8.78 
3.68 
.71 
5 
76.7 
6.0 
73.7 
9.0 
.819 
.80 
2.92 
.75 
6 
75.5 
7.5 
71.7 
11.3 
.768 
.24 
3.58 
.70 
7 
8 
Sunday. 
78.3 
7.1 
74.7 
10.7 
.846 
9.03 
.65 
.71 
9 
78.9 
6.4 
75.7 
9.6 
.873 
.32 
.32 
.74 
10 
78.6 
6.6 
75.3 
9.9 
.862 
.21 
.40 
.73 
11 
77.9 
7.2 
74.3 
10.8 
.835 
8.92 
.65 
.71 
12 
77.6 
7.3 
73.9 
11.0 
.824 
.81 
.68 
.71 
13 
79.6 
6.9 
76.1 
10.4 
.885 
9.44 
.66 
.72 
14 
15 
Sunday. 
80.7 
6.9 
77.2 
10.4 
.916 
.75 
.77 
.72 
1G 
80.9 
7.2 
77.3 
10.8 
.919 
.76 
.96 
.71 
17 
80.8 
7.5 
77.0 
11.3 
.910 
.67 
4.13 
.70 
18 
80.5 
7.1 
76.9 
10.7 
.908 
.64 
3.88 
.71 
19 
80.3 
6.4 
77.1 
9.6 
.913 
.72 
.46 
.74 
20 
80.6 
7.0 
77.1 
10.5 
.913 
.70 
.82 
.72 
21 
22 
Sunday. 
76.2 
7.1 
72.6 
10.7 
.790 
8.47 
' .46 
.71 
23 
75.3 
6.0 
72.3 
9.0 
.783 
.43 
2.81 
•75 
24 
77.7 
5.6 
74,9 
8.4 
.851 
9.13 
.80 
.77 
25 
76.1 
7.6 
72.3 
11.4 
.783 
8.39 
3.6S 
.70 
26 
78.2 
7.6 
7 4.4 
11.4 
.838 
.95 
.88 
.70 
27 
78.4 
8.5 
74.1 
12.8 
.830 
.83 
4.42 
.67 
28 
29 
Sunday. 
79.5 
6.5 
76.2 
9.8 
.887 
9.47 
3.44 
.73 
30 
78.4 
8.0 
74.4 
12.0 
.838 
8.93 
4.13 
.68 
All the Hygrometrical elements are computed by the Greenwich Constants. 
