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















a i 
S 3 a; | Range of the Barometer = 3 Range of the Temperature 
zg = for each hour during my for each hour during 
p 2 2 the month. bo the month. 
our, | fe, aé 
so , 4 a2 5 : 
gS | Max. | Min. Diff, Sa) ova Min. Diff, 
= = 
Inches. | Inches.; Inches.| Inches, ty) 0 ° ° 
Mid- 2 99 2 "5 « 
night. 9.919 | 30.054 | 29.822 | 0.232 5.0 81.3 68.0 13.3 
1 -910 043 813 .230 74.3 80.8 67.0 13.8 
2 .898 .033 .805 .228 73.7 79.4 65.8 13.6 
3 .888 .018 .798 .220 73.2 78.8 65.2 13.6 
4 .888 .003 .802 201 72.7 78.8 64.4 14.4 
5 -905 -019 813 .206 722 78.6 64.0 14.6 
6 .926 031 832 199 Wt, 78.6 63.8 14.8 
fi .948 042 854 .188 72.3 78.4 63.6 14.8 
8 .975 .065 .888 Bile iri 754 81.3 68 2 13.1 
9 993 .083 .906 Bir 78.8 86.0 68.4 17.6 
10 .998 -094 .905 189 81.7 89.4 68.1 | 21.8 
11 .987 .088 .896 192 84.2 93.2 74.0 19.2 
Noon. .963 071 .872 .199 85.9 95.0 74.2 20.8 
1 934 -040 851 .189 87.1 96.2 75.0 21.2 
2 .898 .005 811 194 88.0 97.6 76.0 21.6 
3 877 '29.977 776 .201 88.1 97.8 75.6 220, 
4 .867 .965 -770 .195 87.7 97.6 74.9 22.7 
5 .865 959 -765 194 86.4 96.1 72.6 23.5 
6 .872 .957 Beare 180 83.4 91.6 71.8 19.8 
a .888 .969 -791 178 80.9 88.0 70.8 17.2 
8 .906 -988 | .812 .176 79.2 85.2 70.2 15.0 
9 918 {30.001 831 170 78.0 83.8 69.6 14,2 
10 -928 .015 .837 178 77.0 82.2 70.3 11.9 
ant 924 .008 823 185 76.1 81.4 70.0 11.4 






~The Mean Height of the Barometer, as likewise the Dry and Wet Bulb Ther- 
mometer Means are derived from the Observations made at the several hours 
during the month. 

