Meteorological Observations. 



xci 



Abstract of tie Besults of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of December, 1857. 



Hourly Means, &c. of the Observations and of the Hygrometrical elements 

 dependent thereon. 





o 2< . 



Range of the Bar 



ometer 



JO il 



Range 



of the Temperature 





Ssl 



for each hour di 



iring 



CQ ® 



for 



each hour c 



uring 





bCO^ 



the month. 







the month 





Hour. 



2 * o 



ffl PQ (N 



















1 













S3 <U ^ 

 0> -i-> JS 



Max. 



Min. 



Diff. 





Max. 



Min. 



Diff. 





s 









n 











Inches. 



Inches. 



Inches. 



Inches. 



o 







o 



o 



Mid- 

 night. 



30.044 



30.113 



29.975 



0.138 



63.3 



67.8 



60.2 



7.6 



1 



.035 



.105 



.967 



.138 



62.7 



66.5 



59.2 



7.3 



2 



.025 



.095 



.962 



.133 



62.1 



66.2 



58.7 



7.5 



3 



.014 



.086 



.950 



.136 



61.5 



66.1 



57.8 



8.3 



4 



.013 



.086 



.947 



.139 



60.7 



65.8 



57.1 



8.7 



5 



.025 



.098 



.960 



.138 



60.3 



65.5 



56.4 



9.1 



6 



.042 



.112 



.982 



.130 



59.7 



65.1 



56.2 



8.9 



7 



.066 



.133 



30.007 



.126 



59.5 



65.0 



55.9 



9.1 



8 



.097 



.179 



.034 



.145 



62.2 



67.8 



57.8 



10.0 



9 



.119 



.189 



.049 



.140 



66.0 



70.0 



62.4 



7.6 



10 



.117 



.191 



.046 



.145 



69.3 



73.0 



66.6 



6.4 



11 



.098 



.173 



.028 



.145 



72.6 



75.0 



69.9 



5.1 



Noon. 



.064 



.132 



.001 



.131 



75.2 



76.9 



72.8 



4.1 



1 



.029 



.097 



29.963 



.134 



76.6 



78.6 



74.6 



4.0 



2 



.002 



.068 



.932 



.136 



77.5 



79.6 



75.4 



4.2 



3 



29.986 



.048 



.922 



.126 



769 



78.6 



75.0 



3.6 



4 



.982 



.039 



.917 



.122 



75.1 



77.0 



73.0 



4.0 



5 



.900 



.053 



.925 



.128 



73.1 



75.2 



71.4 



3.8 



6 



30.000 



.065 



.937 



.128 



70.4 



72.8 



68.6 



4,2 



7 



.020 



.086 



.958 



.128 



68.6 



71.2 



66.4 



4.8 



8 



.038 



.110 



.971 



.139 



67.2 



70.4 



65.0 



5.4 



9 



.052 



.124 



.985 



.139 



66.1 



69.6 



63.6 



6.0 



10 



.061 



.127 



.987 



.140 



65.1 



68.8 



62.4 



6.4 



11 



.056 



.123 



• 980 



.143 



64.2 



68.2 



61.4 



6.8 



The Mean Height of the Barometer, as likewise the Mean Dry and Wet Bulb 

 Thermometers are derived from the observations made at the several hours 

 during the month. 



