Meteorological Observations. XXXili 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of May 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. 
Gy 
me 3 Range of the Barometer = # | Range of the Tempera- 
3| 2 5= during the day. ea] se ture during the day. 
Bra bs 
oO > foal 
Date.| © Zo 5 5 
go | Max. | Min. | Diff. | €3 | Max. | Min. | Diff. 
Ss > ios} = <a 
Inches. | Inches. | Inches. | Inches. o to) ) ) 
1 | 29.827 | 29.900 | 29.736 | 0.164] 81.4 91.0 | 72.4] 18.6 
2 838 .890 807 .083 78.8 87.4 3.6 , 13.8 
3 .769 .855 .686 169 78.9 88.9 HBT lige 
A, 705 158 .628 130 79.5 89.8 74.6 | 15.2 
5 .659 726 569 157 82.2 9i.2 72.7 | 18.5 
6 079 .630 482 148 84.2 93.2 76.6 | 16.6 
7 563 .607 514 .093 84.4 93.0 76.0 | 17.0 
8 583 .634 542 .O92 87.2 94.9 82.0 | 12.9 
9 611 701 .5a2 149 88.3 98.6 82.4 | 16.2 
10 674 133 .606 127 88.8 99.2 81.8 | 17.4 
11 .672 739 564 175 86.9 97.8 78.4 | 19.4 
12 622 675 543 lle tafe) 96.7 | 80.8 | 15.9 
13 643 694 088 106 88.5 96.6 82.0 | 14.6 
14 681 740 612 128 87.4 96.4 76.0 | 20.4 
15 .0380 751 595 156 84.8 95.0 76.4 | 18.6 
16 652 .693 061 132 85.8 96.3 74.2 | 22.1 
17 .666 73d .600 135 83.9 94.3 78.2 | 16.1 
18 .665 720 586 134 87.0 95.8 77.0 | 18.8 
19 661 720 604 116 87.9 97.3 79.2 | 18.1 
20 681 740 624 116 89.3 97.8 83.0 | 14.8 
21 .670 734 576 158 | 89.3 97.2 | 83.8 | 13.4 
22 .621 672 O32 .140 89.2 95.8 83.8 | 12.0 
23 O17 642 495 147 | 89.3 96.4 | 83.8 | 12.6 
24, 599 647 AQT 150 88.3 96.8 80.4 | 16.4 
25 595 657 523 134 90.0 97.8 84.0 | 13.8 
26 614 .680 03 127 90.7 102.6 83.0 | 19.6 
27 .585 .660 508 155 92.0 105.8 83.0 | 22.8 
28 553 617 AT9 138 91.2 101.0 84.4) 16.6 
29 547 623 476 147 90.3 98.2 84.6 | 13.6 
30 -610 677 542 135 90.2 98.4 83.0 | 15.4 
31 633 .690 537 153 | 90.6 98.0 | 85.0 | 13.0 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 
qpemmometer Means are derived, from the hourly observations, made during 
e day. 
