Meteorological Observations. ix 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Caleutta, 
in the month of September, 1863. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” Kast. 
Height of the Cistern of the Standard Barometer above the Sea nh 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
cone ue 
2 3 ae) Range of the Barometer a = |Range of the Tempera- 
“ap 5 2 during the day. me ture during the day. 
om GS) 
Date. | 7 ae S| = 
soc? : : Se i 
eas Max. Min. Diff. Si Max. | Min, | Diff. 
Inches. | Inches. | Inches. | Inches. 0) ) 0) 0) 
1 29.606 | 29.662 | 29.530 0.132 §3.3 87.5 80.2 | 7.3 
2 .625 682, 572, 110 82.9 86.0 80.6 | 5.4 
3 677 736 624, 112 83.8 89.0 78.8 | 10.2 
4 .669 750 .583 167 84.7 90.6 80.8 | 9.8 
5) 648, .690 593. .097 82.2 88.6 78.4 | 10.2 
6 | Sunday. 
7 691 754: .619 135 83 5 89.6 213098 
8 704) 169 632 137 84.3 90.3 80.2 | 10.1 
9 677 746 .598 148 83.5 88.5 806 | 7.9 
10 .638 «702 064: 138 82.9 86.6 80.2 | 6.4 
1l 652 113 587 126 82.3 87.5 80.0 | 7.5 
12 693 758 648 110 80.9 $9.2 79.0 | 6.2 
13 | Sunday. 
14 .616 701 536 165 $1.7 85.1 77.8 | 7.3 
15 546 096 482 114 83.7 88.4: 80.2 | 8.2 
16 44 .590 482 .L08 83.5 87.8 80.6 | 7.2 
17 597 .653 552 LOL 83.0 86.8 80.4 | 6.4 
18 .671 PAS) 611 118 83.1 87,2 80.6 | 6.6 
19 107 778 .655 123 83.3 88.7 80.0 | 8.7 
20 | Sunday. 
21 .640 694 557 137 81.9 89.3 78.7 | 10.6 
22 .619 674, 554: 120 80.8 86.6 78.4 | 8.2 
23 .626 .669 998 11 80.3 82.2 78.3 | 3.9 
24, .616 .666 590 .116 80.0 82.7 78.8 | 3.9 
25 .607 670 500 120 80.1 82.6 79.0 | 3.6 
26 .659 732 599 133 83.3 83.5 79.5 | 9.0 
27 =| Sunday. 
28 .686 750 618 132 84.4 89.0 80.2 | 8.8 
29 .657 718 092 .126 84.6 88,8 81.6 | 7.2 
30 648 698 599 099 82.7 85.3 78.0 | 7.3 
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. 
