Meteorological Observations. 
Ixv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor GeneraVs Office, Calcutta, 
in the month of December, 1861. 
Latitude 22° 33'1" North. Longitude 88° 20' 34" East. 
Feet. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18.11 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
Date. 
Mean Height of 
the Barometer 
at 32° Faht. 
Range of the Barometer 
during the day. 
Mean Dry Bulb 
Thermometer. 
Range of the Tempera¬ 
ture during the day. 
Max. 
Min. 
Diff. 
Max. 
Min. 
Diff. 
Inches. 
Inches. 
Inches. 
Inches. 
0 
0 
0 
o 
1 
Sunday. 
2 
30.042 
30.111 
29.987 
0.124 
65.8 
74.5 
59.2 
15.3 
3 
.033 
.097 
.973 
.124 
66.7 
74.2 
60.2 
14.0 
4 ! 
.047 
.116 
30.003 
.113 
67.1 
75.4 
60.8 
14.6 
5 
.067 
.132 
.012 
.120 
67.1 
75.6 
60.2 
15.4 
6 
.093 
.164 
.042 
.122 
66.9 
75.4 
59.6 
15.8 
7 
.046 
.124 
29.968 
.156 
67.5 
75.4 
60.6 
14.8 
8 
Sunday. 
9 
.009 
.075 
.963 
.112 
69.6 
79.4 
61.8 
17.6 
10 
.003 
.096 
.951 
.145 
70.5 
76.6 
66.0 
10.6 
11 
29.955 
.008 
.902 
.106 
70.6 
76.8 
65.6 
11.2 
12 
.956 
.026 
.904 
.122 
67.1 
73.9 
62.8 
11.1 
13 
.961 
.025 
.923 
.102 
65.3 
73.2 
58.6 
14.6 
14 
.978 
.064 
.923 
.141 
65.2 
73.0 
58.4 
14.6 
15 
Sunday. 
16 
.910 
29.957 
.850 
.107 
68.1 
74.1 
63.4 
10.7 
17 
.940 
30.027 
.890 
.137 
66.5 
73 0 
62.2 
10.8 
18 
.950 
.024 
.890 
.134 
66.0 
73.8 
60.8 
13.0 
19 
.967 
.022 
.921 
.101 
65.7 
73.8 
59.6 
14.2 
20 
.980 
.039 
.938 
.101 
65.0 
73.4 
58.8 
14.6 
21 
30.044 
.123 
.965 
.158 
66.0 
73.2 
58.9 
14.3 
22 
Sunday . 
23 
29.994 
.064 
.947 
.117 
65.3 
72.6 
58.8 
13.8 
24 
.997 
.070 
.952 
.118 
64.8 
73.2 
57.4 
15.8 
25 
30.005 
.070 
.955 
.115 
64.4 
73.6 
57.8 
15.8 
26 
.019 
.088 
.971 
.117 
65.1 
74.8 
57.0 
17.8 
27 
.047 
.118 
30.004 
.114 
64.1 
73.4 
56.8 
16.6 
28 
.021 
.091 
29.969 
.122 
65.6 
74.7 
57.2 
17.5 
29 
Sunday. 
30 
.065 
.122 
30.010 
.112 
67.4 
75.6 
61.4 
14,2 
31 
.077 
.152 
.013 
.139 
66.2 
74.2 
60.4 
13.8 
The Mean height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers, arc derived from the twenty-four hourly Observations made during 
the day. 
