Meteorological Observations. XXV 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of Aprit 1866. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” Fast. 
Height of the Cistern of the Standard Barometer above the sea level, 18-11 feet. 
Daily Means, &ce. of the Observations and of the Hygrometrical elements 
dependent thereon. 
Cy 
je § Range of the Barometer a « | Range of the Tempera- 
a 2s during the day. el se ture during the day. 
368 PS 
H ° 
Date.| 5 Qo a : 
se 2° | Max. | Min. | Dif? | $2 | Max. | Min, | Diff, 
a 
| Inches. | Inches. | Inches. | Inches. cr) Oo Co) Oo. 
i 29.842 | 29.976 | 29.781 | 0.195 82.5 89.9 76.9 | 13.0: 
2 844) 915 796 119 82.6 91.8 76.4, 15.4. 
3 893 95d 801 | AeA: 17A 83.4 73.6 9.8 
A 511 882 753 129 73.6: 89.0 71.4 | 17.6 
3) B06 879 25 154 82.1 93.0 72.8 | 20.2: 
6 738 834 .620 214 83.9 95.0 78.2 | 16.8 
7 695 12 617 155 85.6 96.8 77.2 | 19.6 
8 688 .760 621 139 86.6 97.6 78.0 | 19.6: 
9 07 794 .629 .165 88.2 98.8 81.0 | 17.8 
10 .655 730 562 168 89.3 102.6 81.8 | 20.8 
11 615 .685 040 140 89.1 102.3 78.8 | 23.5 
12 642 709 576 133 88.1 100.2 77.4 | 22.8 
13 130 - 810 671 139 87.7 100.2 77.0 | 23.2 
14, 116 of) 634 .165 88.5 101.8 79.2 | 22:6 
15 674, TAT O81. 166 88.8 102.6 80.6 | 22:0 
16 676 736 630 106 | 86.3 93.8 | 80.7 | 13:1 
17 700 766 642 124 | 85.3 90.8 | 81.4 | 9.4 
18 123 796 .618 178 85.1 92.1 80.8 | 11.3 
19 134 812 679. 133; 86.4 95.6 | 81.2 | 14.4, 
20 803 894 a2 .162 86.8 94.0 81.4 | 12.6 
21 914 | 30.062 806 .256 | 82.4 91.4 | 69.6 | 21.8 
22. .983 O74 .899 175 75.5 84.4 68.4 | 16:0 
23. 951 .039 846 194 79.3 88.2 73.0 | 15.2 
24, .902 | 29.973 804 169 82.5 91.2 75.0 | 16.2 
25. 835 917 721 196 83.6 94.2 75.7 | 18.5 
26. .766 853 .660 193 85.7 96.4 77.4 | 19.0 
27. 796 -858 31 127 86.1 94.41 77.8 | 16.6 
28. 853 995 788. 207 80.3 89.8 72.2 | 1746 
29. 874) .9d9 192 167 78.2 87.0 73.0 | 14.0 
30 839 -900 51 149 | 81.0 90.6 | 72.0 | 18.6 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 
Pamenster Means are derived, from the hourly observations, made during 
the day. 
