Meteorological Observations 
xxv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of July, 1861. 
Latitude 22° 33' 1" North. Longitude 88° 20' 34" East. 
Feet. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18.11 
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. 
Diff. 
Max. 
Min. 
Diff. 
Inches. 
Indies. 
Inches. 
Inches. 
0 
o 
o 
o 
1 
29.560 
29.598 
29.499 
0.099 
83.5 
90.4 
81.0 
9.4 
O 
.4S9 
.546 
.407 
.139 
82.1 
85.8 
80.0 
5.8 
3 
.441 
.504 
.391 
.113 
80.2 
80.8 
78.8 
2.0 
4 
.495 
.555 
.441 
.114 
82.3 
85.6 
79.6 
6.0 
5 
.576 
.620 
.526 
.094 
83.5 
86.2 
80.0 
6.2 
6 
7 
.589 
Sunday. 
.632 
.539 
.093 
84.5 
87.6 
82.1 
5.5 
8 
.573 
.624 
.515 
.109 
85.7 
91.6 
81,4 
10.2 
9 
.569 
.617 
.533 
.084 
85.0 
89.4 
82.2 
7.2 
30 
.592 
.637 
.529 
.108 
84.6 
89.2 
81.4 
7.8 
11 
.579 
.629 
.504 
.125 
84.7 
91.6 
81.3 
10.3 
12 
.618 
.655 
.584 
.071 
82.6 
88 3 
79.0 
9.3 
13 
14 
.639 
Sunday. 
.678 
.572 
.106 
82.1 
86.7 
80.1 
6.6 
15 
.574 
.631 
.482 
.149 
83.5 
88.0 
79.7 
8.3 
16 
.466 
.542 
.384 
.158 
82.2 
87.0 
79.4 
7.6 
17 
.354 
.422 
.259 
.163 
82.9 
87.2 
80.0 
7.2 
18 
.382 
.456 
.316 
.140 
81.4 
85.0 
78.8 
6.2 
19 
.452 
.511 
.409 
.102 
81.8 
85.6 
79.4 
6.2 
20 
21 
.515 
Sunday. 
.567 
.465 
.102 
82.3 
86.8 
79.8 
7.0 
oo 
.472 
.534 
.407 
.127 
83.3 
89.4 
80.1 
9,3 
23 
.486 
KOO 
.429 
.093 
84.2 
88.6 
80.0 
8.6 
24 
.517 
.587 
.470 
.117 
82.8 
84.6 
81.2 
3.4 
25 
.570 
.613 
.526 
.087 
84.1 
87.7 
81.2 
6.5 
26 
.591 
.631 
.544 
.087 
82.6 
84,8 
80.2 
4.6 
27 
28 
.596 
Sunday. 
.647 
.538 
.109 
84.0 
88.3 
81.2 
7.1 
29 
.592 
.633 
.549 
.084 
83.8 
87.6 
79.8 
7.8 
30 
.589 
.647 
.543 
.104 
80.9 
83.2 
78.4 
4,8 
31 
.539 
.597 
.447 
.150 
83.7 
89.0 
79.0 
10.0 
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. 
