Meteorological Observations. |xxiil 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of April, 1863. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” East. 
Feet. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18.11. 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
© se) 
2S 3 Range of the Barometet ea Range of the Tempera. 
“Ep Bs iS during the day. pa E ture during the day. 
one De || 
Daa ees a 
; epane. = © t “pes 
g és 2x Max. Min. Diff. Se Max. | Min. | Diff. 
a oll | = 
Inches. | Inches. | Inches. | Inches. Cy) 0 0 Gy) 
1 | 29.748 | 29.817 | 29.661 0.156 85.0 94.6 78.6 | 16.0 
2 “711 792 .611 181 §3.8 93.8 76.8 | 17.0 
3 648 720 039 181 84.7 94.6 75.6 | 19.0 
A 588 651 .006 145 86.0 95.2 77.2 | 18.0 
5 |} Sunday. 
6 595 673 .507 166 87.3 99.8 79.A | 20.4 
7 578 645 .506 39 87.1 97.2 81.0 | 16.2 
8 .688 776 604: 172 83.1 92.6 69.8 | 22.8 
9 767 832 “714 118 84.0 92.8 Gass |) UO 
10 776 842 “715 127 85.0 91.8 79.4 | 12.4 
il 731 £793 .630 163 84.5 92.8 Gi.) Vaz 
12 | Sunday. 
13 .683 751 .608 143 83.4: 92.0 74.4 | 17.6 
14 2 .800 649 silisiil 84.5 91.2 79.4 | 11.8 
15 760 .837 .667 .L70 84.7 93.0 74.6 | 18.4 
16 731 .802 .662 140 80.8 90.4: 72:8 | 17.6 
17 .698 770 613 157 83.5 93.0 76.8 | 16.2 
18 124: 800 .665 185 64.0 92.8 77.2| 15.6 
19 | Sunday. 
20 741 821 684: 137 82.7 92.7 74.2 | 18.5 
21 773 .849 701 148 84.8 95.0 76.4 | 18.6 
22 759 .830 694 136 85.2 94.8 78.4 | 16.4 
23 £755 .823 .681 142 85.3 94.8 78.2 | 16.6 
24, “721 “193 .640 153 85.9 94.8 79.8 | 15.0 
25 702 786 593 193 83.1 90.4 75.0 | 15.4 
26 | Sunday. 
27 716 .788 634 154 84.5 95.6 75.2 | 20.4 
28 .636 -766 70 .196 86.5 95.2 77.8 | 17.4 
29 .654: .733 523 210 84.2 94.5 76.0 | 18.5 
30 645 .706 097 109 80.2 87.2 TAA | 13.1 
The Mean height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers are derived from the twenty-four hourly Observations made during 
the day. 
