Meteorological Observations. 



lxxxiii 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor GeneraVs Oj/ice, Calcutta, 

 in the month of April, 1860. 



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

 dependent thereon. 



Hour. 



Height of 

 Barometer 

 12° Faht. 



Range of the Barometer for 



each hour during the 



month. 



5 c 



S3 5 

 PQ v 



Range of the Tempera- 

 ture for e;ich hour 

 during the 

 month. 





















Mas. 



Min. 



Diff. 



= .a 

 a ^ 



Max. 



Min. 



Diff. 





s ** a 









5 











Inches. 



Inches. 



Inches. 



Inches. 















o 



Mid- 

 night. 



29.766 



29.881 



29.657 



0.224 



80.0 



84.8 



72.8 



12.0 



1 



.759 



.837 



.657 



.180 



79.8 



84.2 



72.4 



11.8 



2 



.747 



.812 



.653 



.159 



74.9 



83.6 



72.2 



11.4 



3 



.742 



.809 



.651 



.158 



78.9 



82.8 



72.2 



10.6 



4 



.737 



.823 



.639 



.184 



78.5 



82.2 



72.4 



9.8 



5 



.754 



.831 



.648 



.183 



78.4 



82.0 



72.2 



9.8 



6 



.772 



.843 



.670 



.173 



78.4 



82.2 



72.2 



10.0 



7 



.793 



.868 



.696 



.172 



79.2 



83.2 



74.2 



9.0 



8 



.814 



.912 



.720 



.192 



82.3 



86.6 



76.6 



10.0 



9 



.823 



.911 



.724 



.187 



85.2 



89.8 



79.8 



10.0 



10 



.822 



.915 



.732 



.183 



87.8 



93.2 



82.6 



10.6 



11 



.809 



.897 



.711 



.186 



90.2 



96.6 



84.6 



12.0 



Noon. 



.791 



.884 



.700 



.184 



92.1 



98.8 



86.0 



12.8 



1 



.765 



.857 



.675 



.182 



93.3 



99.2 



86.8 



12.4 



2 



.737 



.828 



.651 



.177 



94.0 



100.8 



880 



12.8 



3 



.709 



.803 



.630 



.173 



93.8 



100.7 



87.6 



13.1 



4 



.091 



.785 



.608 



.177 



92.7 



98.0 



87.6 



10.4 



5 



.689 



.770 



.614 



.156 



90.8 



96.2 



87.0 



9.2 



6 



.701 



.777 



•618 



.159 ' 



88.0 



92.0 



85.0 



7.0 



7 



.721 



.809 



.632 



.177 



86.0 



89.0 



83.2 



5.8 



8 



.746 



.861 



.650 



.211 



83.1 



86.4 



72.8 



13.6 



9 



.765 



.889 



.654 



.235 



82.0 



85.0 



72.3 



12.7 



10 



.775 



.892 



.680 



.212 



81.6 



84.8 



73.6 



11.2 



11 



.778 



.921 



.675 



.216 



81.0 



84.6 



73.7 



10.9 



The Mean height of the Barometer, as likewise the Mean Dry and Wet Eulb 

 Thermometers are derived from the observations made at the several hours 

 during the month. 



