Meteorological Observations* xxvii 



Abstract of the Results of tlie Hourly Meteorological Observations 



taken at the Surveyor General's Office. Calcutta, 



in the month of April, 1864. 



Hourly Means, Scd of the Observations and of the Hygrometrical elements 

 dependent thereon. 





o| . 



Range 



of the Ba 



rometer 



.JO C 



Range of the Temperature 





^ 8 is 



for each hour c 



uring 



CD ^ 



for 



each hour during 





'sf-B* 



1 



;he month 







the month 



, 



Hour, 











ol 

























S3 03 ** 



03 "^ ta 



Max. 



Min. 



Diff. 



C3 2 



03 fc~< 



Max. 



Min. 



Diff. 





1" 









a 











Inches. 



Inches. 



Inches. 



Inches. 















o 



Mid- 

 night. 

 1 



29.749 



29.863 



29.605 



0.258 



80.3 



83.8 



74.0 



9.8 





.732 



.855 



.597 



.258 



80.0 



83.2 



73.7 



9.5 



2 





.722 



.849 



.588 



.261 



79.6 



83.6 



73.5 



10.1 



3 





.714 



.845 



.589 



.256 



79.0 



83.0 



73.2 



9.8 



4 





.714 



.850 



.605 



.245 



78.8 



82.8 



72.8 



10.0 



5 





.728 



.861 



.622 



.239 



78.5 



82.0 



73.2 



8.8 



6 





.749 



.872 



.643 



.229 



78.3 



81.6 



73.8 



7.8 



7 





.773 



.898 



.668 



.230 



79,3 



82.6 



74.8 



7.8 



8 





.795 



.904 



.701 



.203 



82.7 



87.0 



76.4 



10.6 



9 





811 



.925 



.707 



.218 



85.5 



90.0 



77.2 



12.8 



10 





814 



.939 



.708 



.231 



88.5 



95.4 



78.0 



17.4 



11 





804 



.931 



.689 



.242 



91.0 



99.6 



76.4 



23.2 



Noon. 



.781 



.912 



.663 



.249 



93.2 



102.0 



78.0 



24.0 



1 





754 



.885 



.632 



.253 



94.8 



102.6 



83.8 



18.8 



2 





728 



.861 



.603 



.258 



95,5 



103.2 



84.6 



18.6 



3 





700 



.830 



.581 



.249 



95.5 



103.6 



83.5 



20.1 



4 





679 



.821 



.556 



.265 



94.6 



102.9 



87.3 



15.6 



5 





678 



.819 



.555 



.264 



91.9 



101.6 



82.0 



19.6 



6 





685 



.829 



.568 



.261 



88.7 



96.2 



79.2 



17.0 



7 





703 



.840 



.578 



.262 



86.2 



92.6 



79.0 



13.6 



8 





726 



.873 



.620 



.253 



83.8 



88.0 



74.2 



13.8 



9 





744 



.892 



.635 



.257 



82.9 



86.4 



75.6 



10.8 



10 





755 



.900 



.649 



.251 



81.8 



85,8 



74.7 



11.1 



11 





752 



.893 



.640 



.253 



81.0 



84.8 



748 



10.0 



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

 mometer Means are derived from the Observations made at the several hours 

 during the month, 



