Meteorological Observations, 



lxxxixf] 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 

 in the month of December 1807. 



Latitude 22° 33' 1" North. Longitude 88° 20' 34" East. 



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. 



Date. 



1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 





Range of the Barometer 



during the day. 



Max. 



Min. 



DifF. 



Inches. 



Inches. 



Inches. 



30.125 



30.201 



30.071 



.092 



.1(53 



.021 



.100 



.173 



.039 



.120 



.193 



.066 



.101 



.189 



.046 



.047 



.115 



29.987 



.021 



.088 



.961 



.048 



.125 



30.003 



.058 



.124 



.001 



;083 



.173 



.029 



.068 



.163 



.013 



.050 



.131 



.005 



.(>75 



.165 



.014 



.062 



.139 



.010 



.057 



.110 



29.997 



.102 



.180 



30.046 



.108 



.1(5'.) 



.057 



.093 



.173 



.022 



.082 



.148 



.022 



.057 



.126 



29.992 



.042 



.109 



.986 



.057 



.138 



.998 



.099 



.177 



30.046 



.110 



.182 



.015 



.074 



.151 



.032 



.05S 



.138 



.003 



.055 



.121 



.011 



.082 



.153 



.025 



.085 



.157 



.025 



.096 



.180 



.030 



.082 



.144 



.017 



Inches. 



0.130 

 .139 

 .134 



.117 

 .1 13 

 .128 

 .127 

 .122 

 .123 

 .141 

 .150 

 .126 

 .151 

 .129 

 .113 

 .134 

 .112 

 .151 

 .126 

 .134 

 .123 

 .140 

 .131 

 .137 

 •119 

 .135 

 .110 

 .128 

 .132 

 .150 

 .127 







69.4 

 70.9 

 71.0 

 71.5 

 70.0 

 68.9 

 68.9 

 (57.0 

 66.5 

 66. 1 

 64.7 

 65.3 

 67.3 

 66.7 

 67.7 

 67.4 

 69.1 

 68.7 

 68.3 

 67.7 

 67.0 

 66.8 

 66.9 

 66.6 

 66.3 

 67.8 

 70.1 

 69.6 

 68.1 

 66.8 

 66.0 



Hange of the Tempera- 

 ture during the day. 



Max. 



Min. 



Diff. 



o 



o 



76.6 



63.6 



7s. 2 



64.0 



77.5 



65.2 



78.2 



65.0 



77.6 



63.4 



77.0 



61.5 



77.1 



63.0 



75.0 



60.5 



76.0 



58.5 



74.2 



59.0 



72.5 



57.5 



74.8 



58.0 



75.5 



59.8 



73.2 



61.5 



75.0 



61.0 



74.6 



60.0 



78.2 



62.0 



76.5 



61.5 



77.0 



60.5 



75.8 



60.2 



75.4 



60.0 



76.7 



59.2 



75.2 



60.0 



75.5 



59.0 



73.5 



60.5 



76.4 



60.0 



78.2 



62.0 



78.0 



62.5 



75.5 



61.4 



74.7 



60.0 



73.4 



58.5 



12.9 

 1 1,2 

 12.3 

 13.2 

 14.2 

 15.5 

 14.1 

 1 i,5 

 17.5 

 15.2 

 15.0 

 16.8 

 15.7 

 11.7 

 14.0 

 14.6 

 16.2 

 15.0 

 16.5 

 15.6 

 15.4 

 17.5 

 15.2 

 16.5 

 13.0 

 16.4 

 16.2 

 15.5 

 14.1 

 14.7 

 14.9 



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. 



