Meteorological Observations , 
Ixvii 
Abstract of the Results of the Hourly Meteorological Observations 
talcen at the Surveyor GeneraVs Of ice. Calcutta , 
in the month of December , 1861. 
Hourly Means, 
&c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
Hour. 
Mean Height of 
the Barometer 
at 32° Faht. 
Range of the Barometer 
for each hour during 
the month. 
Si 
-- <u 
« g 
o 
rZ a 
Rang 
for 
e of the Temperature 
each hour during 
the month. 
Max. 
Min. 
Diff. 
c _£ 
Sh 
§ 
Max. 
Min. 
Diff. 
Inches. 
Inches. 
Inches. 
Inches. 
0 
0 
0 
o 
Mid¬ 
night. 
30.013 
30.089 
29.916 
0.173 
63.5 
68.8 
60.0 
8.8 
1 
.002 
.089 
.910 
.179 
62.8 
68.4 
59.2 
9.2 
2 
29.991 
.081 
.901 
.180 
62.2 
67.6 
58.6 
9.0 
3 
.983 
.076 
.890 
.186 
61.5 
67.2 
58.0 
9.2 
4 
.983 
.073 
.887 
.186 
61.0 
66.8 
57.6 
9.2 
5 
.986 
.095 
.902 
.193 
60.6 
66.0 
57.0 
9.0 
6 
30.007 
.102 
.918 
.184 
60.3 
66.0 
56.8 
9.2 
7 
.026 
.130 
.930 
.200 
60.4 
66.2 
57.2 
9.0 
8 
.054 
.144 
.953 
.191 
63.1 
68.2 
59.4 
8.8 
9 
.075 
.162 
.951 
.211 
65.9 
70.3 
62.8 
7.5 
10 
.075 
.164 
.953 
.211 
68.0 
72.8 
64.5 
8.3 
11 
.055 
.143 
.947 
.196 
70.7 
74.0 
68.4 
5.6 
Noon. 
.029 
.122 
.908 
.214 
72.5 
76.4 
70.2 
6.2 
1 
29.998 
.077 
.885 
.192 
73.6 
78.2 
71.4 
6.8 
2 
.979 
.056 
.857 
.199 
74.4 
79.4 
72.6 
6.8 
3 
.965 
.045 
.852 
.193 
74.2 
79.0 
72.2 
6.8 
4 
.961 
.042 
.850 
.192 
72.8 
76.6 
71.0 
5.6 
5 
.967 
.045 
.856 
.189 
71.1 
74.8 
68.6 
6.2 
6 
.976 
.062 
.870 
.192 
68.9 
72.9 
66.4 
6.5 
7 
.993 
.078 
.900 
.178 
67.3 
71.4 
64.8 
6.6 
8 
30.009 
.095 
.915 
.180 
66.1 
70.8 
63.6 
7.2 
9 
.021 
.102 
.933 
.169 
65.3 
69.8 
62.8 
7.0 
10 
.027 
.114 
.927 
.187 
64.6 
69.4 
61.8 
7.6 
11 
.022 
.114 
.926 
.188 
63.9 
69.0 
61.2 
7.8 
The Mean height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers, are derived from the Observations made at the several hours 
during the month. 
