Meteorological Observations. xl 
Abstract of the Results of the Hourly Meteorological Observations. 
taken at the Surveyor General's Office, Calcutta, 
in the month of June 1866. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
= 63 Range of the Barometer r= ,. |Range of the Tempera- 
*2 Bie for each hour during ec) § ture for each hour 
fe) 1S) 1 3 
es the month. ¢ during the month. 
o Be Es 
Hour.| = Ex aa 
San ae 
22 | Max. | Min. | Dif. | 32 | Max. | Min, | Dif 
as ae 
Inches. | Inches. | Inches. | Inches. © ) Co) te) 
Mid- 
night.| 29.532 | 29.646 | 29.407 | 0.239 83.4 BZ 49-2 8.0 
1 ol .630 397 233 85.2 87.0 79.2 7.8 
2 507 621 383 238 83.0 87.0 79.2 7.8 
3 500 .633 367 .266 82.8 86.8 78.8 8.0 
A, AT 641 365 276 82.7 $6.8 78.4: 8.4 
5 DOT 644 .365 279 82.7 86.4 78.8 7.6 
6 24 651 19 272 82.7 86.6 79.0 7.6 
ff 539 664 397 267 83.7 88.0 89.0 8.0 
8 553 67 397 251 85.2 90.8 80.6 | 10.2 
9 561 .676 396 -280 86.9 95.0 1.0} 14.0 
10 561 682 394 .288 88.5 97.2 80.4 | 16.8 
11 052 -.676 319 297 89.8 98.6 80.6 | 18.0 
Noon. 539 651 362 | .289 9059") 100.6 Saal ons 
1 520 .632 304 .280 91.6 101.6 82.4 | 19.2 
2 499 618 Rstsi5) .279 91.9 101.2 81.6 | 19.6 
3 ASL 579 029 .250 $1.9 101.0 80.8 | 20.2 
4 463 065 O19 246 91.0 100.2 80.4 | 19.8 
5 459 .652 .320 329 90.0 98.2 81.0 | 17.2 
6 475 578 2403 230 88.2 95.2 81.4 | 13.8 
7 .500 601 302 200 85.9 O2ai 76.2 | 16.5 
8 520 614 382 202 85.1 90.8 79.4 | 11.4 
9 O38 .656 401 .250 84.4 89.8 79.0 | 10.8 
10 49 651 Ail 240 83.9 88.4 79.2 9.2 
11 AT .656 A416 .240 83.5 87.8 79.4: 8.4 
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. 
