Meteoroloyical Observations. lvit 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of August 1866. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” East. 
Height of the Cistern of the Standard Barometer above the sea level,-18.11 feet. 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
ie 
& 8 Range of the Barometer = H Range of T mpera- 
=e during the day. al aes ture during the day. 
355 aee| 
Date. ae & Q A : 
Bo°-| Max. | Min. | Diff. = 2 | Max. | Min. | Diff. 
Ss SS Sia 
Inches. | Inches. | Inches. | Inches. 0) fo) fo) (0) 
i 29.586 | 29.625 | 29.520 0.105 83.2 89.6 80.4: 9.2 
2 614 699 4d Lol 80.7 83.2 Nisey 5 Bd 
3 HBO) .809 683 126 80.4: 83.6 79.2 | AA 
4, 739 BO Ushdl .677 - 100 80.0 82.7 79.0 Biff 
5 689 TAZ .616 126 81.5 84.8 79.4 5.4 
6 040 .699- 442, 218 82.2 86.0 79.8 6.2 
7 .390 AY 382 SIU 81.2 85.4 79.2 6.2 
8 A1A, 499 .309 .130 80.9 85.2 78.2 7.0 
9 AA -630 Als pillxey 83.6 89.7 78.8 | 10.9 
10 593 -631 O24 107 84.3 90.8 80.7 | 10.1 
11 - TET .613 ATA .139 84.6 89.2 81.8 7 Ay 
12 OL ool 426 25 83.6 89.4 80.4: 9.0 
13 542 .O9d A89 .LO6 83.0 87.6 79.8 7.8 
14, 597 .639 AL .098 83.3 87.4 80.0 7 A, 
15 617 651 .060 O91 83.4 89.6 80.2 9.4, 
16 .589 681 pil -100 82.4: 86.0 78.8 72, 
17 563 .623 484 .139 83.8 87.8 80.2 7.6 
18 529 012 A522 120 82.6 86.7 80.5 6.2 
19 50D AT AAZ -L05 83.8 88.3 80.2 8.1 
20 509 61 A465 .096 83.2 85.6 81.5 AL 
21 543 .607 A985 LL 82.0 85.2 79.6 5.6 
22 078 634 ay) 5) -119 83.7 89.4 79.4 | 10.0 
23 562 615 AT5 140 84.6 90.4 80.4 | 10.0 
24, D8 .613 ASS 128 85.0 90.8 81.4) 9.4, 
25 585 645 .OLd .130 84.3 89.8 81.8 8.0 
26 .606 657 AT 110 83.6 88.4 80.6 7.8 
27 .607 649 .0d0 099 82.3 88.4 80.3 8.1 
28 002 636 511 125 82.0 86.0 17.4 8.6 
29 .670 739 615 124, 81.9 85.8 73.6 7.2, 
30 754, 822 691 ail 84.1 90.0 79.0 | 11.0 
ok 723 787 .639 148 86.2 91.8 81.4 | 10.4 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 
Thermometer Means are derived, from the hourly observations, made during 
the day. 
