Meteorological Observations. 
in 
Abstract of the He suits of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office. Calcutta, 
in the month of April, 1861. 
Hourly Means, &c. of the Observations ami of the Hygrometrical elements 
dependent thereon. 
O jS • 
t ^ <D 4J 
Range of the Barometer 
3 2 
Range of the Temperature 
Hour. 
^ 3 ■% 
.BP ? 
« 5 o 
S P3 <M 
for each hour during 
the month. 
rn <u 
^ a 
G 1 
for 
each hour during 
the month. 
J H) ^ 
^3 jZX .u 
cu & 
Max. 
Min. 
Diff. 
c « 
aj 
Max. 
Min. 
Diff. 
| 
Inches. 
Inches. 
Inches. 
Inches. 
0 
0 
o 
0 
Mid¬ 
night. 
29.721 
29.826 
29.589 
0.237 
80.9 
84.4 
75.2 
9.2 
~1 
.710 
.806 
.581 
.225 
80.4 
83.8 
74.1 
9.7 
2 
.701 
.789 
.579 
.210 
79.8 
83.4 
73.2 
10.2 
3 
.690 
.770 
.575 
.195 
79.4 
83.0 
73.0 
10.0 
4 
.696 
.780 
.572 
.208 
79.1 
82.7 
72.6 
10.1 
o 
.701 
.789 
.587 
.202 
79.1 
82.8 
72.2 
10.6 
6 
.724 
.825 
.590 
.235 
78.8 
82.6 
72.0 
10.6 
7 
.742 
.834 
.609 
.225 
79.7 
83.4 
73.4 
10.0 
8 
.764 
.857 
.634 
.223 
83.2 
86.6 
78.8 
7.8 
9 
.778 
.885 
.624 
.261 
86.4 
89.4 
83.0 
6.4 
10 
.778 
.8S5 
.664 
.221 
88.8 
91.4 
85.6 
5.8 
11 
.765 
.875 
.641 
.234 
91.7 
95.0 
87.3 
7.7 
Noon. 
.745 
.845 
.624 
.221 
93.7 
97.8 
87.7 
10.1 
1 
.718 
.823 
.596 
.227 
94.9 
100.0 
86.4 
13.6 
2 
.690 
.802 
.569 
.233 
95.1 
100.8 
83.6 
12.2 
3 
.666 
.779 
.550 
.229 
94.5 
100.1 
86.4 
13.7 
4 
.642 
.766 
.535 
.231 
93.0 
98.0 
81.8 
13.2 
5 
.644 
.756 
.574 
.182 
90.6 
95.6 
84.4 
11.2 
6 
.656 
.765 
.569 
.196 
87.4 
93.2 
74.6 
18.6 
7 
.675 
.776 
.590 
.186 
85.1 
91.4 
77.0 
14.4 
8 
.690 
.777 
.605 
.172 
83.6 
89.6 
75.8 
13.8 
9 
.712 
.800 
.630 
.170 
82.5 
88.8 
75.4 
13.4 
10 
.727 
.815 
.643 
.172 
81.9 
85.4 
75.0 
10.4 
11 
.728 
.838 
.653 
.185 
81.4 
85.6 
75.4 
10.2 
The Mean Height of the Barometer, as likewise the Mean Dry an d Wet Bulb 
Thermometers are derived from the Observations made at the several houra 
daring the month. 
