lxvii 
Meteorological Observations. 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of January, 1861. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
Hour. 
Mean Height of 
the Barometer 
at 32° Fabt. 
Range of the Barometer for 
each hour during the 
month. 
Mean Dry Bulb 
Thermometer. 
Range of the Tempera- 
ture for each hour 
during the 
month. 
Max. 
Min. 
Diff. 
Max. 
Min. 
Diff. 
Inches. 
Inches. 
Inches. 
Inches. 
0 
0 
0 
o 
Mid- 
night. 
29.966 
30.078 
29.813 
0.265 
64.3 
70.2 
56.9 
13.3 
i 
.972 
.075 
.800 
.275 
63.6 
69.8 
55.8 
14.0 
2 
.965 
.065 
.797 
.268 
63.1 
69.4 
55.0 
14.4 
3 
.958 
.061 
.784 
.277 
62.8 
69.0 
54.2 
14.8 
4 
.954 
.056 
.783 
.273 
62.3 
69.0 
53.6 
15.4 
5 
.961 
.071 
.802 
.269 
61.6 
69.4 
52.9 
16.5 
6 
.976 
.090 
.828 
.262 
61.4 
69.2 
52.8 
16.4 
7 
.997 
.107 
.841 
.266 
61.1 
68.8 
52.7 
16.1 
8 
30.031 
.126 
.872 
.254 
63.5 
69.8 
55.7 
14.1 
9 
.051 
.157 
.906 
.251 
66.3 
72.5 
60.2 
12.3 
10 
.055 
.152 
.911 
.241 
69.2 
74.0 
63.2 
10.8 
11 
.036 
.123 
.897 
.226 
72.4 
76.6 
63.3 
13.3 
Noon. 
.006 
.095 
.862 
.233 
74.9 
so.o 
64.2 
15.8 
i 
29.973 
.068 
.832 
.236 
76.3 
81.8 
63.1 
18.7 
2 
.949 
.049 
.798 
.251 
77.2 
81.8 
63.0 
18.8 
3 
.930 
.031 
.760 
.271 
77.3 
83.2 
62.8 
20.4 
4 
.926 
.028 
.747 
.281 
75.6 
81.8 
62.5 
19.3 
5 
.923 
.035 
.749 
.286 
74.0 
80.6 
61.8 
18.8 
6 
.931 
.037 
•736 
.301 
71.3 
75.8 
61.6 
14.2 
7 
.950 
.056 
.760 
.296 
69.2 
74.8 
61.4 
13.4 
8 
.966 
.074 
.774 
.300 
67.6 
73.8 
61.0 
12.8 
9 
.975 
.082 
.784 
.298 
66.6 
73.6 
59.6 
14.0 
10 
.979 
.084 
.822 
.262 
66.3 
72.8 
60.4 
12.4 
11 
.975 
.071 
.819' 
.252 
65.2 
72.4 
59.8 
12.6 
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. 
