Meteorological Observations. XIX 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
im the month of March 1866. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
pom Range of the Barometer = .. | Range of the Tempera- 
B=) Oa: for each hour during a 2 ture for each hour 
PS 4 the month. a during the month. 
o | 5 cn 
Hour. a aa a : 
25 | Max. | Min. | Dif. | $2 | Max. | Min. | Diff 
aa Sa 
Inches. | Inches. | Inches. | Inches. (0) (0) ro) ra) 
Mid- 
night.| 29.821 | 30.007 | 29.706 | 0.301 (@eil 82.8 72.5 | 10.3 
if 807 .OOL .696 305 78.6 82.0 72.4 9.6 
2 194 | 29.985 .682 .303 78.1 81.6 72.8 8.8 
3 784 978 671 307 77.5 81.5 72.8 8.7 
4 781 .982 .668 14 17.2 81.6 72.8 8.8 
5 796 995 | .687 .308 76.8 81.4 71.6 9.8 
6 815 | 30.009 707 302 76.4 81.1 71.5 9.6 
7 839 025 730 .295 76.7 81.4 71.4 | 10.0 
8 .869 043 748 | .295 78.8 82.8 | 73.8 | 9.0 
9 885 .055 761 294 81.9 86.6 76.6 | 10.0 
10 .889 060 751 309 85.1 89.8 80.0 9.8 
LT .878 .056 OS) || asi 87.9 92.4 | 83.8 | 8.6 
Noon. 851 .031 740 | .291 90.3 BG | edd |) 
1 .818 .003 wiles) 292 92.0 96.0 | 89.2] 6.8 
2 .784 | 29.976 .666 310 93.4 97.4 91.0 6.4 
3 761 957 642 15 94.1 98.4 90.6 7.8 
4, 748 933 625 .308 94.0 98.6 89.8 8.8 
3) 745 .939 619 | .3820 92.5 97.4 87.6 9.8 
6 152 .950 624: 326 88.9 93.6 84.6 9.0 
7 .769 964 .633 ool 86.0 90.6 82.6 8.0 
8 193 .990 -666 324 84.0 87.0 81.6 5.4 
9 819 | 30.009 693 316 82.1 84.8 73.8 | 11.0 
10 830 O21 107 14 80.9 83.3 76.2 7.6 
11 831 .O19 706 303 79.8 83.0 74.2 8.8 
_ 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. 
