Meteorological Observations. Ixxxiil 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of May, 1863. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
lone | Range of the Barometer = ® Range of the Temperature 
=] 4 a for each hour during | (Q g for each hour during 
H om the month. rae) the month. 
our, = & a as | a I 
, 9 | = 2 | 
See | Max. | Min. | Dif. | S& | Max. | Min. Diff. 
= | | = 
| | 
Inches. | Inches.| Inches.) Inches. 0 Q | ty) 0 
ele 722 {29.509 | 0.218, 808 | 86.2| 75 
night 29.635 29.722 | 29.509 ; : 2 .O 11.2 
1 630 mdiludh 491 .226 | 80.7 86.0 75.0 11.0 
2 617 709 A485 .224 | 80.6 85.2 74.6 10.6 
3 .612 707 481 .226 80.4 85.2 74.4 10.8 
4 .610 -708 | .489 219 | 80.9 85.2 74.2 11.0 
5 627 “foo || AQT 244) 80.2 | 85.2) 74.0 11.2 
6 643 747 495 .252 | 80.3 85.6 74.2 11,4 
Z 657 157 508 249 | 81.8 87.4: 75.6 11.8 
8 674 “784 | 523 .261 | 85.0 90.6 80.4 10.2 
¢) 683 785 023 .262 | 87.3 92.6 80.0 12.6 
10 .682 798 | .521 Di |) {)8) 95.4 84.4 11.0 
11 .669 782 O11 Pa || Bil 97.8 78.9 18.9 
Noon. 649 762 495 267 | 92.2 99.8 77.2 22.6 
1 .622 738 A462 276 | 93.1 | 101.4 75.4 26.0 
2 597 698 | .434: .264 | 92.9 | 102.4 76.6 25.8 
3 576 681 406 2D | 92.7 | 1036 75.8 27.8 
4, 509 676 | .373 .303 91.6 ; 104.0 74.8 29.2 
5 002 661 376 285 | 90.2 99.6 75.0 24.6 
6 565 .669 81 .288 | 87.6 95.0 74.9 20.1 
7 592 683 397 .286 | 85.3 94.1 74.6 19.5 
8 .623 .707 | 446 26] 83.6 | 88.4 74.6 13.8 
9 637 723 A470 258 82.8 | 87.0 7A.8 12.2 
10 .639 728 483 245 82.5 | 86.4 75.0 11.4 
11 643, 728 ATA 254 | 81.9 | 86.6 74.6 12.0 
“tithe Mean Height of the Barometer, as likewise the Mean Dry and Wet Bulb 
Thermometers ave derived from the Observations made at the several hours 
during the month. 
