Meteorological Observations. 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of January, 1866. 
Latitude 22° 23’ 1” North. Longitude 88° 20’ 34” Hast. 
Height of the Cistern of the Standard Barometer above the Sea-level, 18 ft. 11 in. 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
Ge sy Q 
ie = eo Range of the Barometer é % | Range of the Tempera- 
eh 5 rq during the day. a8 ture during the day. 
Date. Ks 3 ee 48 
Aa A 
qo : : do : 4 
eae Max. Min. Diff. 6 a Max. | Min. } Diff. 
or Gs} o i=] 
=| = 
Inches. | Inches. | Inches. | Inches. oO (0) fo) oO 
1 80.056 | 30.147 | 30.006 | 0.141 68.3 76.4 61.0 | 15.4 
2 .045 1384 | 29.993 141 68.0 77.8 60.4 | 17.4 
3 .029 113 .987 .126 69.1 49.4 60.2 | 19.2 
4, .001 .082 .930 152 72.0 82.8 62.8 | 20.0 
5 29.961 .061 .886 175 73.4 83.6 65.8 | 17.8 
6 .906 } 29.971 848 123 73.1 81.2 66.4 | 14.8 
7 30.007 | 30.073 .948 125 68.4 73.8 64.6 9.2 
8 113 .221 | 30.057 164 64.0 73.0 55.8 | 17.2 
9 119 219 .064: 155 63.4 72.9 56.0 | 16.9 
10 .068 158 004 154 65.2 75.5 57.6 | 17.9 
11 .042 112 | 29.992 .120 66.9 77.0 58.6 | 18.4 
12 .068 158 | 30.003 155 66.1 76.6 57.0 | 19.6 
13 .060 .140 .015 125 65.5 76.8 56.0 | 20.8 
14, .060 133 | 29.995 138 67.8 79.0 58.0 | 21.0 
15 .082 183 | 30.019 164: 68.8 78.6 60.0 | 18.6 
16 .036 .123 | 29.969 154 67.5 77.2 59.2 | 18.0 
17 .012 .098 .955 143 67.1 T7A 58.9 | 18.5 
18 .018 .107 .959 148 68.2 78.7 59.2 | 19.5 
19 29.990 .056 .923 133 69.9 81.4 61.0 | 20.4 
20 30.028 .166 .967 139 70.1 81.2 61.0 | 20.2 
21 044 113 .962 151 71.3 81.0 62.6 | 18.4 
22, .080 161 | 30.033 128 73.1 81.3 65.0 | 16.3 
23 .096 .165 .029 136 70.5 79.8 62.2 | 17.6 
24, .105 .185 .020 165 71.6 81.2 62.8 | 18.4 
25 077 148 | 29.989 159 73.1 82.0 64.4 | 17.6 
26 .085 173 | 30.013 .160 74.5 83.8 66.4 | 17.4 
27 .066 152 | 29.983 .169 74.0 84.7 67.0 | 17.7 
28 042 .083 | 30.001 .082 68.3 77.8 \ 63.4) 14.4 
29 .005 .079 | 29.935 144 68.6 75.2 63.4 | 11.8 
30 29.975 .056 .929 127 68.2 72.2, 63.8 8.4: 
31 30.003 094 .937 157 63.4 64.6 62.2 2.4 
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. 
