Meteorological Observations. 



IX 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General 1 s Office, Calcutta, 



in the month of February, 1866. 



Latitude 22° 23' 1" North. Longitude 88° 20' 34" East. 



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. 





o © 



Range of the Barometer 





Range of the Tempera- 



Date. 



Heigh 

 Barom 

 12° Pah 



during the day. 



fig 



ture during the day. 

















d © *■" 

 3rd -g 



Max. 



Min. 



Diff. 



a Z 



Max. 



Min. 



Diff. 













ffl EH 











Inches. 



Inches. 



Inches. 



Inches. 



o 



o 







o 



1 



29.982 



30.052 



29.934 



0.118 



63.1 



66.9 



60.0 



6.9 



2 



.994 



.067 



.946 



.121 



64.3 



71.6 



58.4 



13.2 



3 



.921 



.013 



.81!) 



.173 



65.3 



73.8 



57.2 



16.6 



4 



.833 



29.898 



.787 



.111 



63.6 



70.6 



60.4 



10.2 



5 



.818 



.925 



.766 



.159 



66.3 



75.8 



58.6 



17.2 



6 



.983 



30.062 



.915 



.117 



(59.2 



78.4 



61.8 



16.6 



7 



30.015 



.138 



.985 



.153 



70.5 



80.2 



61.4 



18.8 



8 



.021 



.101 



.967 



.134 



70.8 



80.4 



63.0 



17.4 



9 



.060 



.132 



.997 



.135 



68.1 



75.2 



64.6 



10.6 



10 



.051 



.122 



.982 



.140 



71.5 



81.7 



62.0 



19.7 



11 



29.987 



.Oil 



.915 



.126 



69.9 



80.0 



65.4 



14.6 



12 



.913 



.013 



.850 



.163 



66.8 



71.2 



62.4 



8.8 



13 



30.037 



.124 



.986 



.138 



63.8 



71.1 



56.4 



14.7 



14 



.006 



.075 



.937 



.138 



64.7 



73.5 



56.2 



17.3 



15 



29.975 



.057 



.919 



.138 



67.3 



76.4 



58.6 



17.8 



16 



.952 



.040 



.888 



.152 



69.3 



78.4 



59.8 



18.6 



17 



.966 



.016 



.925 



.121 



72.6 



82.0 



63.2 



18.8 



18 



.981 



.073 



.930 



.143 



72.8 



78.3 



68.8 



9.5 



19 



.981 



.062 



.886 



.176 



74.9 



86.0 



67-1 



18.6 



20 



.953 



.039 



.896 



.143 



71.9 



80.2 



67-8 



12.4 



21 



.915 



.023 



.89.7 



.126 



73.7 



81.8 



67-8 



14.0 



22 



.923 



29.992 



.856 



.136 



72.0 



81.0 



63.2 



17.8 



23 



.945 



30.021 



.894 



.127 



72.7 



82.6 



62.2 



20.4 



24 



.967 



.056 



.916 



.140 



73.0 



84.8 



62.8 



22.0 



25 



.937 



.009 



.874 



.135 



75.1 



87.2 



64.8 



22.4 



26 



.887 



29.959 



.824 



.135 



77.0 



88.2 



67-5 



20.7 



27 



.843 



.914 



.791 



.123 



77.9 



89.2 



68-4 



20.8 



28 



.815 



.900 



736 



.164 



79.6 



91.4 



70.8 



20.6 



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. 



