Meteorological Observations. Ixxxix 
Abstract of the Results of the Hourly Meteorological Observations 
taken at the Surveyor General’s Office, Calcutta, 
in the month of December 1866. 
Latitude 22° 33’ 1” North. Longitude 88° 20’ 34” Hast. 
D 
Height of the Cistern of the Standard Barometer above the sea level, 18.11 feet. 
Daily Means, &c. of the Observations and of the Hygrometrical elements 
dependent thereon. 
ty 
a © | Range of the Barometer = = |Range of the Tempera- 
Shee during the day. aie ture during the day. 
ope ae 
Date.| & a 2, rig 
ams ae 
5 © cB Max. Min. Diff. Bc Max. | Min. | Diff. 
a A | 
Tnehes. | Inches. | Inches. | Inches. a) ° ° fo) 
1 30.023 | 30.072 | 29.962 0.110 TET 82.0 64.0 | 18.0 
2 O17 O88 935 ol lis333 71.8 | 80:6 64.6 , 16.0 
3) O14 LOO GAT Milienes 69.8 80.6 61.4 | 19.2 
4, O11 065 941 124 68.4, 78.0 60.2 | 17.8 
5 29.985 062 911 151 68.2 78.0 60.0 | 18.0 
6 O61 044, 904 140 67.0 78.6 60.6 | 16.0 
7 30.006 O71 944, ei 65.9 77.0 57.6 | 19.4, 
8 O71 59 | 39:000 59 65.8 76.0 57.0 | 19.0 
9 O71 aleiin| .029 102 65.4 76.0 56.8 | 19.2 
10 104 73 O54 19 67.1 76.4 89.0 | 17.4 
slisli .130 185 08d L100 67.9 78.0 60.0 | 18.0 
12 ealuities 195 O45 150 67.0 76.8 59.0 | 17.8 
13 025 096 | 29.955 AL 67.5 77.0 59.6 | 17.4 
14, O14 078 .959 119 68.0 Tf 60.6 | 16.6 
15 065 | 22) 30.022 .LO0 67.2 OL Pa 58.7 | 18.5 
16 136 208 O87. 121 67.9 7.5 39.8 | L727, 
i 148 2222 076 146 66.7 76.6 58.8 | 17.8 
18 144 NG. .08 129 68.0 G72, 61.0 | 16.2 
19 alias 208 119 plas 67.5 7) 8 58.4 | 18.9 
20 195 he A231 2152 66.9 16.6 58.6 | 18.0 
21 164) 226 | 108 118 67.1 76.0 58.8 | 17.2 
22 164 a2 117 115 67.1 76.0 58.8 | 17.2 
23 158 21 087 134 66.5 76.0 58.2 | 17.8 
2A, 170 20k 124 130 68.0 78.6 88.0 | 17.6 
25 163 | 249) | 096 153 65.3 74,2, 57.4) 16.8 
26 119 L186 050 136 | 65.4 75.8 | 56.6 | 19.2 
gi | O75 | 138 | O12 126 63.4 | Foa.4 66.0 | 19.4 
25 O88 | 159 | | .035 | TAZA 6a 75.4 56.4 | 19.0 
29 O23 | 113 | 29.952 161 64.8 75.8 58.8 | 19.0 
30° | 29.960 033 890) 143 | 65.4 77.4 | 55.6) 21:8 
31 979 049 934) le |) MGR 77.0 | 58.0 | 19.0 
t 
The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 
Thermometer Means are derived, from the hourly observations, made during 
: the day. 
