’ 
Meteorological Observations. i 
Abstrac of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General's Office, Calcutta, 
in the month of January, 1865. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” East. 
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 
dependent thereon. 






4 = 3 Range of the Barometer a 2  |Range of the Tempera- 
) § S during the day. > # ture during the day. 
o s 
Dat, | #28 (2a 
3 4x Max Min Diff. FA = Max, | Min, | Diff. 
= = 
Inches. | Inches. | Inches. | Inches. Cy) 0 ° rt) 
1 | Sunday 
2 30.083 | 30.159 | 30,044 0.115 68.0 774 59.2 | 18.2 
3 .090 .158 046 112 68.4 77.8 59.2 | 18.6 
4 151 .222 105 alla 69.4; 78.8 61.2 | 17.6 
5 150 238 .099 139 68.8 77.8 60.4 | 17.4 
6 113 .209 .047 162 68.2 77.8 60.5 | 17.3 
7 055 137 | 29.997 140 68.7 77.5 59.8 | 17.7 
8 | Sunday. 
9 075 -156 | 30.017 139 68.6 76.8 62.0 | 14.8 
10 075 148 019 129 65.7 73.4 59.0 | 14.4 
11 .058 132 | 29.992 14.0 64.6 73.2 57.0 | 16.2 
12 .058 -120 | 30.010 .110 66.4 75.7 58.6 | 17.1 
13 .073 136 .026 .110 67.2 76.4 59.2 | 17.2 
14 105 178 051 127 69.7 79.6 60.6 | 19.0 
15 | Sunday. 
16 119 191 .065 126 68.8 78.0 61.4 | 16.6 
17 .089 165 .040 125 69.0 78.4 60.8 | 17.6 
18 110 181 .062 cual) 70.0 81.0 60.8 | 20,2 
19 102 185 .035 150 70.7 81.0 60.8 | 20.2 
20 .089 169 .030 139 70.1 80.9 61.0 | 19.9 
21 073 146 006 140 70.6 81.0 62.0 | 19.0 
22 | Sunday. 
23 .095 175 052 123 71.7 81.2 63.8 | 17.4 
24 .086 169 .017 152 72.7 83.0 | 65.6 | 17.4 
25 054 149 | 29.993 156 724 82.0 64.2 | 17.8 
26 29.979 .053 -908 145 73.1 83.2 64.1 | 19.1 
27 .914 | 29.993 844 149 73.6 79.1 69.2 | 9.9 
28 .926 | 30,002 869 133 72.8 81,6 66.2 | 15.4 
29 | Sunday. 
30 30.003 090 922, .168 70.9 80.3 62.4 | 17.9 
31 29.973 .050 908 142 69.0 77.2 65:5, | 7 



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. 
