Meteorological Observations . 
l 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office , Calcutta , 
in the month of April, 1861. 
Latitude 22° 33' 1" North. Longitude 88° 20' 34" East. 
Feet. 
Height of the Cistern of the Standard Barometer above the Sea level, 18.1 l 
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. 
* « 
q a 
Range of the Tempera¬ 
ture during the day. 
Max. 
Min. 
Diff. 
e 
<L> 
<1 
Max. 
Min. 
Diff. 
Inches. 
Inches. 
Inches. 
Inches. 
0 
o 
0 
0 
1 
29.779 
29.849 
29.712 
0.137 
86.9 
100 0 
78.2 
21.8 
2 
.781 
.851 
.718 
.133 
85.9 
96.2 
78.0 
18.2 
3 
.751 
.838 
.680 
.158 
86.8 
100.8 
76.2 
24.6 
4 
.689 
.769 
.607 
.162 
84.8 
93.4 
77.4 
16.0 
5 
.695 
.763 
.602 
.161 
82.7 
91.6 
75.0 
16.6 
6 
.719 
.798 
.643 
.155 
83.0 
94.2 
74.2 
20.0 
7 
8 
Sunday. 
.714 
.798 
.625 
.173 
85.4 
96.2 
78.4 
17.8 
9 
.694 
.751 
.614 
.137 
85.3 
94.8 
78.5 
16.3 
10 
.697 
.765 
.621 
.144 
85.2 
94.4 
78.2 
16.2 
11 
.688 
.776 
.593 
.183 
85.1 
93.8 
78.6 
15.2 
12 
.679 
.735 
.611 
.124 
84.9 
93.0 
76.2 
16.8 
13 
.667 
.752 
.590 
.162 
86.5 
94.7 
80.6 
14.1 
14 
15 
Sunday. 
.636 
.698 
.581 
.117 
87.6 
97.4 
82 2 
15.2 
16 
.683 
.748 
.627 
.121 
88.1 
97.8 
82.2 
15.6 
17 
.705 
.782 
.644 
.138 
88.3 
98.0 
81.8 
16.2 
18 
.716 
.782 
.659 
.123 
87.6 
95.8 
81.4 
14.4 
19 
.715 
.780 
.668 
.112 
86.7 
95.2 
82.1 
13.1 
20 
.696 
.772 
.621 
.151 
87.6 
98.2 
82.6 
15.6 
21 
22 
Sunday. 
.690 
.742 
.585 
.157 
83.3 
95.2 
75.8 
19.4 
23 
.730 
.789 
.671 
.118 
81.3 
93.2 
72.0 
21.2 
24 
.769 
.838 
.710 
.128 
83.3 
93.4 
78.4 
15.0 
25 
.805 
.885 
.756 
.129 
83.7 
92.0 
75.8 
16 2 
26 
.787 
.869 
.700 
.169 
85.8 
96.8 
78.4 
18.4 
27 
.699 
.795 
.609 
.186 
86.9 
97.4 
79.5 
17.9 
28 
29 
Sunday. 
.599 
.664 
.535 
.129 
86.0 
96.0 
79.4 
16.6 
30 
.719 
.821 
1 
.653 
.168 
86.4 
96.6 
75.6 
21.0 
The Mean height of the Barometer, as likewise the Mean Dry and YVet Bulb 
Thermometers are derived from the twenty-four hourly Observations made during 
the day. 
