Meteorological Observations. Ixxv 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of April, 1863. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon, 
© 8 Range of the Barometer for = 3 Pa ag SIIB 
fy A : 8 ture for each hour 
ssa each hour during the ro “0 
6 Ss rote ae during the 
Hour.| & =~ ae month. 
mas AE 
Ss) gw SS : ; =e : : 
S.o4 Max. Min. Diff. a Max. | Min. | Diff. 
= = 
Inches. | Inches. | Inches. | Inches. (0) O (a) o 
Mid- ey fe 9 b 
night. 29.717 | 29.798 | 29.579 0.219 19.3 82.4 74,4, 8.0 
1 704 786 B71 -215 79.3 82.9 TAA 8.5 
2 -695 776 566 -| .210 78.8 82.0 74.2 7.8 
3 688 13 561 212 78.5 81.6 74.0 7.6 
4 684 782 ool .231 78.7 81.4 74.3 TA 
5 715 793 -606 187 78.2 80.8 73.0 7.8 
6 -716 804 089 215 78.3 81.0 72.8 8.2 
7 733 820 2099 .225 79.2 82.2 74.2 8.0 
8 «764 838 .607 231 82.4 86.2 76.8 9.4 
9 175 842 .620 222 85.2 88.8 "7.0 | 11.8 
10 -769 849 645 204 87.7 90.8 78.8 | 12.0 
11 756 ool .625 .206 90.0 93.6 78.6 | 15.0 
Noon. 738 815 .099 .216 91.5 95.6 81.6 ; 14.0 
1 -708 781 .580 201 92.7 97.0 83.8 | 138.2 
2 .680 761 2006 -205 93.1 97.6 85.4 | 12.2 
3 .655 734 023 211 93.0 99.2 86.6 | 12.6 
4 .6384 720 507 213 91.5 99.8 86.8 | 13.0 
5 .635 719 .006 213 89.4 96.7 85.2 | 11.5 
6 644 745 .506 239 86.1 92.0 69.8 | 22.2 
oo .666 788 5Y45) .263 84,1 89.6 72,4 | 17.2 
8 684 763 533 .230 82.5 89.0 74,4 | 14.6 
9 -709 .832 543 -289 81.8 86.6 74.2 | 12.4 
10 “721 .823 O78 .250 80.9 84.0 75.6 8.4 
11 721 818 594 224 79.9 83.6 74.6 9.0 
The Mean Height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers are derived from the Observations made at the several hours 
during the month, 
