Meteorological Observations. 
XXXL 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of December, 1863. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” Hast. 
Feet. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18.11 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
a4 
Date. x fa s 
Ss a 
a 
Inches. 
» 1 30.024, 
2 .063 
3 .050 
4 .016 
3) 028 
6 | Sunday. 
al 29.970 
8 .996 
9 30.035 
10 024 
11 29.994 
12 30.035 
13 | Sunday. 
14 046 
15 043 
16 024: 
17 .002 
18 .052 
19 .076 
» 20 | Sunday. 
21 .065 
22 021 
23 034: 
24 .062 
25 054 
26 044 
27 =| Sunday. 
28 .060 
29 028 
30 O14 
31 29.997 
dependent thereon. 
Range of the Barometer 
during the day. 
Max. 
Inches. 
30.092 
136 
.140 
.092 
118 
045 
052 
110 
100 
.051 
118 
117 
115 
.092 
.065 
124 
153 
-140 
-099 
108 
.139 
141 
119 
.136 
.095 
-082 
O77 
Min. 
Inches. 
29.966 
30.011 
29.980 
950 
971 
914, 
952 
.968 
995 
943 
976 
997 
.988 
963 
934 
973 
30.015 
29.998 
953 
.976 
30.006 
29.987 
.996 
30.016 
29,975 
948 
928 
Diff, 
Inches. 
0.126 
125 
160 
142 
147 
131 
-100 
142 
145 
108 
142 
120 
127 
129 
131 
151 
183 
142 
146 
132 
133 
154 
123 
120 
120 
134: 
149 
Mean Dry Bulb 
Thermometer. 
os) 
a O) 
OU 
66.9 
66.0 
66.2 
67.1 
67.3 
67.9 
67.8 
68.0 
69.6 
68.3 
65.4 
65.2 
64,7 
65.5 
66.5 
66.5 
66.1 
67.6 
69.3 
66.8 
65.1 
65.0 
65.6 
66.6 
67.1 
65.8 
Range of the Tempera- 
ture during the day. 
Max. 
0) 
75.3 
77.2 
76.0 
76.7 
76.9 
76.6 
77.4 
77.2 
77.8 
USUI 
78.4 
75.4 
75.8 
75.5 
75.6 
76.2 
76,2 
76.6 
78.8 
78.0 
75.2 
75.2 
76.4 
75.4 
76.5 
77.0 
75.8 
Min. 
57.2 
57.4 
56.4 
56.6 
57.8 
57.4 
57.4 
58.4 
62.6 
59.4 
57.6 
56.8 
56.8 
59.4 
61.0 
57.2 
Diff. 
17.0 
18.2 
17.6 
18.2 
17.9 
17.4 
18.2 
18.4: 
19.1 
19.0 
18.4; 
18.8 
19.2 
20.4 
15.4 
15.8 
17.6 
19.6 
18.6 
Wf aL 
16.0 
18.6 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb Ther. 
mometer Means are derived from the hourly Observations made during the day. 
