XXXVI 
Meteorological Observations. 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of December, 1863. 
Hourly Means, &c. of the Observations and of the Hygrometrical elements 
oe 
a 5 
oO 
2 ie 5 
Hour. = 2 3S 
5 = 
[=] 
Sa | a 
25 |p 
a as) 
(0) 10} 
Mid- | 592 | 3.2 
night, 
1 58.8 3.0 
2 58.2 2.9 
3 57.5 2.9 
A, 57.1 2.8 
5 56.7 2.8 
6 56.3 2.7 
Uf 56.1 2.8 
8 58.3 4.5 
9 59.8 5.8 
10 61.6 6.9 
11 63.0 8.6 
Woon 63.5 10.4 
HOOnDNTAmswhyrH 
fon) 
ce 
is 
fon) 
fod ba 
Computed Dew Point. 
Dry Bulb above Dew 
Point, 
oO 
AANA NNN D 
g 
fon) 
Mean Ilastic force of 
Vapour. 
Inches. 
0.462 
A459 
452 
AAT 
A37 
A431 
426 
422 
431 
A445 
459 
459 
AGL 
455 
452 
449 
452 
478 
AQ 
501 
A494 
486 
A78 
A472 
dependent thereon.—(Continued.) 
pour in a Cubic foot 
Mean Weight of Va- 
of air. 
Troy grs.|Troy grs. 
5.17 
14 
.06 
4.94. 
Vapour required for 
complete saturation. 
Additional Weight of 
Mean degree of Hu- 
midity, complete satu- 
ration being unity. 
All the Hygrometrical elements are computed by the Greenwich Constants. 
From the lst January, 1863, the Greenwich New Factors have been used for 
computing Dew-points. 
