Meteorological Observations. xi 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of September, 1868. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
3 =; | Range of the Barometer = © Range of the Temperature 
age for each hour during meg for each hour during 
Hour = 2 Aine ROOM Pb 3 the month. 
il eee | ee | | 
so? A ; 5 
S42 | Max. Min. Diff, Sc | Max. Min. Diff. 
= 2 | 
Inches. | Inches.| Inches.) Inches. (0) 0 o 0 
Mid 45 an low ge | 819 
night. 29.654 \29.721 {29.558 | 0.163 2 83.0 79.0 4.0» - 
1 64:4 714 502 162 81.0 82.8 | 78.8 | 4.0 
2 .633 rial 539 172 80.7 82.6 78.8 | gy 
3 621 702 .O38L 7h 80.6 82.4 78.2 4.2, 
4 .620 .687 522 165 80.3 81.8 | 77.8 4.0 
5 629 “701 920 181 80.2 82.8 | 78.4 4A 
6 644 722, .030 92 80.2 82.8 | 78.3 4.5 
7 .660 743 .539 204 80.9 83.4 | 79 4, 4.0 
8 .683 758 713 185 82.9 84.5 | 79.9 4.6 
9 .695 178 .590 188 83.8 85.8 | 80.6 5.2 
10 .698 772 583 189 85.0 | 87.6 80.4: 7.2 
il .685 «754 O16 L178 86.0 | 88.4 | 80.8 | 7.6 
Noon. .667 735 61 LTA 86.2 89.3 80.7 8.6 
1 .638 .720 528 192 85.4 89.6 79.1 10.5 
2 614 .688 .006 182 85.1 90.6 78.7 11.9 
3 094 | 683 482 201 84.9 90.3 78.4 11.9 
A, .082 .676 A82 194 84.8 89.5 79.6 9.9 
5 .590 .663 A88 175 83.6 87.4 79.9 We 
6 .602 .669 482 187 82.9 86.2 79.4 6.8 
7 .623. .689 084 155 82.4: 85.4 79.6 5.8 
8 647 .708 | 002 .156.| 82.0 | 84.8 79.2 5.6 
9 664 729 .565 164 81.8 84.2 794 4.8 
10 .670 129 570 | 159 81.4 83.8. 786 5.2 
11 664: 727 562 | .165 81.2) 83.6 78.0 5.6 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb Ther- 
mometer Means are derived from the Observations made at the several hours 
during the month. 
