Meteorological Observations. lix 
Abstract of the Results of the Hourly Meteorvluyical Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of August 1866. 
Hourly Means, &e. of the Observations and of the Hygrometrical elements 
dependent thereon. 
63 Range of the Barometer | = Range of the Tempera- 
= iS fe for each hour during as ture for each hour 
Be g a= the month. a during the month. 
Hour.| 5 25 as 
nN i 
e433 | Max. | Min. | Dif. | §& | Max. | Min. | Diff. 
as ao 
Inches. | Inches. | Inches. | Inches. co) ) 0 co) 
Mid- 
night.| 29.601 | 29.760 | 29.399 | 0.361 81.3 83.7 79.0 4.7 
1 589 51 389 362 80.9 83.8 79.2 4.6 
2 .580 144 -o09) .3600 80.7 83.0 79.2 3.8 
3 570 138 372 306 80.5 82.6 78.9 aheif 
4 566 TAL .368 373 80.2 82.2 78.2 4.0 
5 574 £750 378 312 80.1 81.8 717A 4.4 
6 088 71 378 393 80.3 82.4 77.8 4.6 
7 .603 801 393 408 81.0 83.2 78.8 4A, 
8 .616 .809 All 398 $2.0 84.8 79.0 5.8 
9 .626 .816 AA .392 83.6 87.0 79.6 74 
10 .629 .822 A432 .390 84.7 88.4 79.2 9.2 
11 .618 .812 408 404 86.1 89.6 80.5 9.1 
Noon. 603 196 384 |  .412 85.7 90.4 | 81.4] 9.0 
1 583 .766 378 .388 86.1 91.0 81.2 9.8 
2 .560 133 .303 .380 85.8 91.2 79.2 | 12.0 
3 540 713 .309 374 85.8 90.8 79.4 | 11.4 
4, 525 694 .oa2 .362 85.7 91.0 19.6 | ENA 
5 527 .693 343 .o00 85.0 91.8 | 80.0 | 11.8 
6 540 713 .300 .308 83.8 89.7 TOLD OAL 
7 508 123 307 .306 83.1 87.7 79.2 8.5 
8 583 748 388 .960 82.6 86.4 79.6 6.8 
9 .604) 758 400 .308 82.2 85.6 79.6 6.0 
10 617 .809 All 398 81.9 84.8 79.6 5.2 
11 613 767 415 352 81.6 84.4 | 79.2 5.2 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 
Thermometer Means are derived from the observations made at the several 
-hours during the month. 
