Meteorological Observations. 
• Ixxv 
Abstract of the Results of the Hourly Meteorological Observations 
talcen at the Surveyor General's Office , Calcutta, 
in the month of February, 1861. 
Hourly Means, &c. of the Observations and of the Hygvometrical elements 
dependent thereon. 
Hour. 
Mean Height of 
the Barometer 
at 32° Faht. 
Range of the Barometer 
for each hour during 
the month. 
Mean Dry Bulb 
Thermometer. 
Range of the Temperatur 
for each hour during 
the month. 
Max. 
Min. 
Diff. 
Max. 
Min. 
Diff. 
Inches. 
Inches 
Inches. 
Inches. 
o 
0 
0 
0 
Mid- 
night. 
29.917 
30.070 
29.710 
0.360 
67.3 
73.4 
59.0 
14.4 
1 
.909 
.060 
.707 
.353 
66.5 
73.0 
58.0 
14.4 
2 
.902 
.057 
.695 
.362 
65.8 
72.8 
57.8 
15.0 
3 
.887 
.035 
.682 
.353 
65.3 
72.6 
57.3 
15.3 
4 
.900 
.036 
.732 
.304 
64.7 
72 2 
57.0 
15.2 
5 
.901 
.040 
.710 
.330 
64.3 
72.2 
55.2 
17.0 
6 
.916 
.058 
.728 
.330 
63.7 
72.0 
55.2 
16.8 
7 
.937 
.086 
.754 
.332 
63.3 
72.4 
54.4 
1S.0 
8 
.963 
.114 
.792 
.322 
65.9 
72.9 
58.4 
14.5 
9 
.991 
.136 
.801 
.335 
70.7 
75.2 
63.6 
11.6 
10 
.998 
.155 
.824 
.331 
74.5 
79.0 
68.0 
11.0 
11 
.987 
.137 
.812 
.325 
78.1 
82.8 
71.4 
11.4 
Noon. 
.959 
.109 
.775 
.334 
81.0 
86.6 
73.7 
12.9 
1 
.922 
.074 
.741 
.333 
83.0 
88.6 
75.4 
13.2 
2 
.890 
.040 
.716 
.324 
84.1 
89.8 
77.0 
12.8 
3 
.869 
.022 
.686 
.336 
84.5 
90.2 
76.8 
13.4 
4 
.857 
.018 
.668 
.350 
83.5 
90.6 
75.0 
15.6 
5 
.856 
.017 
.675 
.342 
81.6 
89.0 
73.3 
15.7 
6 
.863 
.025 
.681 
.344 
77.5 
84.0 
69.3 
14.7 
7 
.877 
.037 
.697 
.340 
74.4 
81.0 
66.4 
14.6 
8 
.895 
.050 
.708 
.342 
72.1 
79.0 
64 7 
14,3 
9 
.912 
.084 
.711 
.373 
70.6 
77.2 
63.3 
13.9 
10 
.918 
.082 
.716 ■ 
.366 
69.5 
75.6 
61.6 
14.0 
11 
.919 
.081 
.714 
.367 
68.8 
74.6 
61.0 
13.6 
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. 
