Meteorological Observations. Ixv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of March, 1863. 
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. 
Range of the Barometer 
Range of the Tempera 
during the day. 
ture during the day. 
J 
Thermometer. 
the Barometer 
at 32° Faht. 
Max. | Min. | Dif, Max. | Min. | Diff. 
Mean Height of 
Mean Dry Bulb 
Inches. | Inches. | Inches. | Inches. 
Sunday. 
° 
° 
° 
° 
3 
= 
Q 
1 
2 |29.800 | 29.885 | 29.726 0.159 79.7 89.6 71.6 | 18.0 
3 762 832 .700 132 80.9 91.1 73.8 |) 17.3 
4 795 .876 746 .130 81.3 91.3 74.8 | 16.5 
5 
6 
v4 
8 
9 
844: 923 791 182 81.4 91.4: 75.8 | 15.6 
832 -909 174A: 135 81.6 91.6 75.0 | 16.6 
831 903 782 21 81.0 91.8 74.8 | 17.0 
Sunday. 
876 94:7 823 124 80.8 91.8 72.0 | 19.8 
10 .866 954: 794 160 81.4 91.8 74.0 | 17.8 
11 793 .882 722 160 81.5 91.3 73.8 | 17.5 
12 754 831 702 0129 81.6 94.0 71.8 | 22.2 
13 739 811 683 128 81.7 93.0 75.0 | 18.0 
14 814 .889 fol 138 81.9 90.6 76.2 | 14.4 
15 | Sunday. 
16 872 955 .818 137 80.7 87.2 75.8 | 11.4 
17 823 898 759 139 80.7 92.4 72.8 | 19.6 
18 .865 937 -809 128 79.3 87.6 71.2 | 16.4 
19 917 | 30,017 847 170 81.9 92.2 73.4 | 18.8 
20 896 | 29.976 828 148 83.0 93.4: 74.2 | 19.2 
21 896 975 837 138 83.5 93.4 74,0 | 19.4 
22 | Sunday. 
23 .863 948 801 147 86.8 96.0 77.8 | 18.2 
24, 846 .930 791 139 86.3 97.8 76.8 | 21.0 
25 839 .906 .788 118 87.6 98.4: 77.0 | 21.4 
26 845 921 775 146 85.6 96.4: 75.4 | 210 
27 805 .887 731 156 85.7 96.9 76.4 | 20.5 
28 769 854 2696 158 85.8 97.6 75.6 | 22.0 
29 | Sunday. 
30 771 848 .697 151 86,4: 98.0 80.0 | 18.0 
31 761 848 .676 172 87.0 99.0 79.8 | 19.2 
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. 
