Meteorological Observations . iii 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of September, 1865. 



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

 dependent thereon. 



Hour. 



Mean Height of 

 the Barometei 

 at 32° Faht. 





Inches. 



Mid- 

 night, 

 1 



29.693 

 .683 



2 



.670 



3 



.661 



4 



.657 



5 



.665 



6 



.678 



7 



.694 



8 



.714 



9 



.726 



10 



.727 



11 



.713 



Noon. 



.691 



1 



.669 



2 



.645 



3 



.622 



4 



.614 



5 



.618 



6 



.633 



7 



.655 



8 



.678 



9 



.697 



10 



.707 



11 



.704 



Range 



of the Barometer 



:2 u " 



Rang 



e of the Temperature 



for ea 



ch hour (1 



uring 



eo <" 



for 



each hour ( 



uring 



1 



he month 







the month 











G i 





















Mas. 



Min. 



Diff. 



c 2 



Max. 



Min. 



Diff. 



Inches. 



Inches. 



Inches. 















o 



29.815 



29.599 



0.216 



82.5 



84.6 



7S.0 



6.6 



.811 



.584 



.227 



82.3 



84.2 



78.0 



6.2 



.796 



.563 



.233 



82.2 



84.0 



78.4 



56 



.786 



.553 



.233 



82.0 



84.2 



78.6 



5.6 



.792 



.547 



.245 



81.7 



84.4 



78.0 



6.4 



.798 



.549 



.249 



81.5 



84.5 



77.5 



7.0 



.812 



.554 



.258 



81.2 



84,6 



75.6 



9.0 



.832 



.569 



.263 



82.0 



85.2 



75.4 



98 



.851 



.587 



.264 



83.4 



86.8 



75.5 



11.3 



.850 



.598 



.252 



84.7 



88.1 



75.4 



12.7 



.855 



.594 



.261 



85.7 



89.8 



76.1 



13.7 



.854 



.586 



.268 



86.7 



91.2 



76.9 



14.3 



.835 



.567 



.268 



87.4 



92.0 



78.4 



13.6 



.807 



.547 



.260 



87.5 



92.8 



80.5 



12.3 



.775 



.528 



.247 



87.5 



93.0 



79.6 



13.4 



.748 



.523 



.225 



87.4 



92.0 



79 5 



12.5 



.735 



.513 



.222 



87 



91.6 



79.6 



12.0 



.732 



.514 



.218 



86 6 



91.4 



79.2 



12.2 



.744 



.539 



.205 



85.3 



89.4 



76.8 



12.6 



.767 



.559 



.208 



84.5 



88.2 



77.4 



10.8 



.796 



.574 



.222 



83.6 



87.4 



77.4 



10.0 



.806 



.588 



.218 



83.1 



88.0 



77.8 



8.2 



.808 



.601 



.207 



82.8 



85.4 



77.8 



7.6 



.810 



.611 



.199 



82.5 



84.8 



78.1 



6.7 



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 mouth. 



