Meteorological Observations. li 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
‘in the month of July, 1865. : 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 










S 2 |; | Range of the Barometer = 3 Range of the Temperature 
Bq = for each hour during £9 s for each hour during 
H oe the month. bo the month. 
our, cae a o a 8 
go”? 5 : a3 : : 
$4 | Max. | Min. Diff. Se, | Max. Min, Diff. 
= = 
Inches. | Inches.} Inches.| Inches. to) 0 0 o 
Mid- | 29.587 | 29.778 82.1 
night i : 29.4382 | 0.346 A 84,0 774 6.6 
al 574 .761 421 .340 82.0 83.8 77.9 5.9 
2 563 756 .410 3846 81.9 83.8 77.8 6.0 
3 554 737 .395 42 81.7 83.4 77.8 5.6 
4 564 .740 3893 847 81.6 83.5 77.8 5.7 
5 .561 «752 .388 864 81.5 83.4 77.9 5.5 
6 577 .765 .409 B56 81.6 83.0 78.0 5.0 
Us 591 777 | 421 356 | 82.2 | 84.0 79.2 4.8 
8 604 .790 438 .852 83.6 85.4 80.2 5.2 
9 615 803 A76 B27 84.7 87.5 81.8 5.7 
10 615 .803 .469 334 85.8 88.9 81.9 7.0 
11 608 798 457 341 86.5 90.4 80.8 9.6 
Noon 595 788 444 344 86.8 91.4 82.2 9.2 
i) .576 .768 431 337 87.4: 92.6 82.6 10.0 
2 .053 737 413 B24 87.2 91.4 83.2 8.2 
3 .535 .729 | .380 349 87.1 91.2 83.1 8.1 
4 525 Ayala! 381 .330 86.2 90.0 81.4 8.6 
5 527 -708 381 227 85.8 89.4 80.2 9.2 
6 .535 .739 384 .355 84.4: 87.6 79.4 8.2 
7 553 753 A414 339 83.2 86.4 79.8 6.6 
8 577 Att 431 .340 82.9 85.8 79.4 6.4 
9 594 .789 A445 344 82.4: 84.8 78.6 6.2 
10 .606 793 458 .3835 82.3 84.6 78.0 6.6 
11 .606 +784 468 316 82.2 84,4 78.1 6.3 





The Mean Height of the Barometer, as likewise the Dry and Wet Bulb Ther- 
mB&meter Means are derived from the Observations made at the several hours 
uring the month. 


