Meteorological Observations. Ixv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
, an the month of September 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. 
Se | 
e g _ | Range of the Barometer = 5 Range of Tempera- 
sas during the day. ral ture during the day. 
ort Sl ics ae 
© oe SoM) |= 
Date. | & ated a = 
of | Max. Miciasis|) atte: ae Max. | Min. | Diff. © 
Ss > 3 = =! | 
Inches. | Inches. | Inches. | Inches. 7) o ) Oo 
3 29.669 | 29.730 | 29.582 0.148 87.0 93.2 S222) | eo 
2 646 715 576 139 86.8 93.0 82.2 , 10.8 
3 .098 .669 O17 152 86.5 92.0 82.0 | 10.0 
4 570) 627 ADA 133 83.1 87.2 80.0 | 7.2 
5 612 683 550 133 | 83.3 S94) FOLONE O25 
6 .666 726 615 ltl 83.9 58.4, 80.6 7.8 
if .667 726 584 142 89.7 90.2 81.6 8.6 
8 571 .652 473 179 83.5 89.0 79.6 9.4 
9 498 509 444, LIL 80.8 $2.8 79.0 3.8 
10 048 607 004 103 83.3 87.3 80.2 Go 
11 -626 .687 .069 118 83.2 87.0 80.6 6.4 
12 615 .672 534 138 84.2 96.1 80.5 9.6 
13 -638 .691 O86 105 84.9 91.8 81.8 | 10.0 
14 642 694, 079 119 84.8 83.0 81.8 6.2 
15 579 618 515 103 85.8 | 91.6 81.8 9.8 
16 O79 .622 Oil eiaialt Savon O28 80.2 | 12.6 
17 099 645 523 122 A) | G4 8.2 6.0 
18 643 724 .O76 148 82.9 86.8 79.8 7.0 
19 730 786 674: Ze S3e2 89.0 | 80.6 | 8.4 
20 TAL 197 681 116 82.5 87.6 80.4 7.2 
21 712 162, 645 ess 82.6 87.5 79.0 8.5 
22 763 812 713 O99 84.1 89.8 HOLS | WO.2) 
23 802 .855 746 109 85.1 80.8 80.2 | 10.6 
24 18 834 698m wae 3 Ste SOLO) LOLO ne OKO 
25 729 176 657 119 82.2 84.0 79.2 4.8 
26 a/fex 182 .652 130 83.9 90.0 73.0 | 12.0 
27 167 842 688 5A 85.4) 91.2 80.8 | 10.4 
28 152 Stl 676 135 86.2 91.4 82.2 9.2 
29 51 .803 .676 127 86.5 93.2 81.4 | 11.8 
30 -760 ol 677 154 86.5 93.6 81.8 | 11.8 
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. 
