Meteorological Observations. ix 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of May, 186 J. 
Latitude 22° 33" 1" North. Longitude 88° 20' 34" East. 
Feet. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18.11 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
Mean Height of 
the Barometer 
at 32° Faht. 
Range of the Barometer 
during the day. 
Mean Dry Bulb 
Thermometer. 
Range of the Tempera¬ 
ture during the day. 
Date. 
Max. 
Min. 
Biff. 
Max. 
Min. 
Diff. 
Inches. 
Indies. 
Inches. 
Inches. 
0 
o 
o 
o 
1 
29.767 
29.850 
29.679 
0.171 
88.1 
100.0 
77.8 
22.2 
2 
.727 
.825 
.610 
.215 
88.9 
98.0 
82.2 
15.8 
3 
.656 
.705 
.574 
.131 
83.0 
96.2 
74.3 
21.9 
4 
5 
.623 
Sunday. 
.694 
.530 
.164 
85.2 
94.8 
75.4 
19.4 
6 
.621 
.696 
.544 
.152 
88.4 
96.6 
82.6 
14.0 
7 
.575 
.633 
.496 
.137 
88.3 
95.6 
83.5 
12.1 
8 
.569 
.636 
.497 
.139 
88.1 
97.0 
77.6 
19.4 
9 
.600 
.685 
.500 
.185 
80.7 
91.2 
72.4 
18.8 
10 
.622 
.690 
.565 
.125 
82.8 
93.2 
74.2 
19.0 
11 
12 
.669 
Sunday. 
.729 
.608 
.121 
85.8 
96.0 
78.8 
17.2 
13 
.672 
.752 
.584 
.168 
89.3 
98.0 
82.2 
15.8 
14 
.649 
.714 
.568 
.146 
87.9 
98.0 
82.2 
15.8 
15 
.667 
.756 
.587 
.169 
87.4 
96.4 
80.8 
15.6 
16 
.708 
.786 
.635 
.151 
85.8 
96.8 
78 0 
18.8 
17 
.684 
.758 
.590 
.168 
88.7 
97.2 
82.6 
14.6 
18 
19 
.680 
Sunday. 
.814 
.578 
.236 
84.5 
92.2 
80.4 
11.8 
20 
.541 
.603 
.475 
.128 
83.5 
91.2 
79.0 
12.2 
21 
.497 
.546 
.420 
.126 
86.9 
94.2 
79.8 
14.4 
22 
.484 
.539 
.393 
.146 
86.3 
90.8 
82.4 
8.4 
23 
.451 
.504 
.369 
.135 
87.2 
95.8 
82.4 
13.4 
24 
.451 
.497 
.385 
.112 
86.6 
93.6 
1 81.8 
11.8 
25 
26 
.460 
Sunday. 
.521 
.417 
.104 
85.0 
92.7 
77.6 
15.1 
27 
.595 
.646 
.526 
.120 
86.8 
93.8 
81.0 
12.S 
28 
.643 
.741 
.574 
.167 
85.3 
92.2 
74.8 
17.4 
29 
.661 
.710 
.594 
.116 
80.0 
87.8 
74.8 
13.0 
30 
.617 
.680 
.533 
.147 
83.2 
91.8 
77.4 
14.4 
31 
.590 
.631 
.509 
.122 
84.3 
91.1 
77.5 
13.6 
The Mean height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers are derived from the twenty-four hourly Observations made during 
the day. 
