Meteorological Observations. xlix 
Abstract of the Results of the Howrly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of July, 1865. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” East. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18 ft, 11 in, 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. ; 










65 2 
2os Range of the Barometer = 5 {Range of the Tempera- 
bo 5 2 during the day. re 3 ture during the day, 
o eA A z 
Date. e ae 5 ; 
s+ | Max. | Min. | Dif, aa Max. | Min. | Diff. 
a = 
Inches. | Inches, | Inches. | Inches. 0 0 ° 0 
1 29.523 | 29.584 | 29.465 0.119 84.3 88.6 80.8 7.8 
2 550 -590 487 103 85.2 90.8 SL |k D1 
3 548 .596 A477 119 85.5 92.6 82.0 | 10.6 
4 494 573 417 156 85.0 | 89.5 82.0 7.6 
5 445 A484 381 103 84.6 88.5 81.4 Gil 
6 «455 -490 410 -080 | 84.6 88.3 S16) * 627 
v4 440 A484 .380 104 83.7 86.9 81.6 5.3 
8 434 483 .388 095 | 83.4 | 88.0 | 80.2] 7.8 
9 457 506 ALL .095 84.2 89.0 81.0 8.0 
10 494} 547; .456| .091| 9854 | 914 | 816] 98 
11 5389 .605 A82 123 83.8 90.1 78.0 | 12.1 
12 522 C7 44h 133 81.4 85.0 78.4 6.6 
13 512 .553 465 .088 84.2 91.2 81.4 9.8 
14 537 2092 483 109 84.8 90.6 79.0 | 11.6 
15 535 .587 .482 105 82.6 85.6 79.6 6.0 
16 524 -562 486 .076 825 87.1 79.2 7.9 
nn | .536 .587 495 .092 82.7 85.6 80.0 5.6 
18 558 597 003 094 84.2 87.4 81.8 5.6 
19 .540 -585 479 -L06 85.4 90.5 81.4 9.1 
20 .582 631 0386 .095 85.2 88.6 82.6 6.0 
21 .598 .656 0387 119 85 3 88.9 82.9 6.0 
22 .604 655 007 098 85.7 90.8 82.5 8.3 
23 .640 699 585 114 85.2 89.6 80.2 9.4 
24 .687 .739 .628 All 83.5 89.0 79.8 9.2 
25 725 774 .666 -L08 81.7 83.8 80 2 3.6 
26 .719 772 678 094 83.4 88 4 79.5 8.9 
27 .708 758 .659 .099 83.2 87.7 79.8 7.9 
28 .749 .803 .700 .103 83.3 87.6 79.4: 8.2 
29 759 .798 707 O91 82.1 85.2 78.5 6.7 
30 714 772 646 .126 82.0 88.4 Tiga 1d..0 
31 .678 .726 601 125 82.6 88.6 78.8 9.8 



The Mean Height of the Barometer, as likewise the Dry and Wet Bulb Ther- 
mometer Means are derived from the hourly Observations made during the day. 
