Meteorological Observations. 



xxvu 



Abstract of the Results of the Sourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of April, 1857. 



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

 dependent thereon. 





ight of 

 •ometer 

 Faht. 



Ranice of the Barometer for 



each hour during the 



month. 



PQ % 



Range or the Tempera- 

 ture for each hour 

 during the 



Hour. 











si 



month. 





















C5Xi « 



Max. 



Min. 



Diff. 



s-3 



0) P" 1 



Max. 



Min. 



Diff. 





S 









s 











Inches. 



Inches. 



Inches. 



Inches. 







o 







o 



Mid- 



night. 



1 



29.760 



29.863 



29.577 



0.286 



78.8 



83.6 



71.4 



12.2 



.751 



.854 



.574 



.280 



78.4 



83.2 



70.7 



12.5 



2 



.738 



.846 



.566 



.280 



78.1 



83.2 



70.6 



12.6 



3 



.739 



.862 



.571 



.291 



77.5 



83.0 



70.4 



12.6 



4 



.749 



.855 



.621 



.234 



76.9 



81.0 



69.4 



11.6 



5 



.753 



.860 



.608 



.252 



76.9 



81.6 



69.4 



12.2 



6 



.776 



.895 



.617 



.278 



76.7 



81.2 



69.7 



11.5 



7 



.798 



.906 



.648 



.258 



77.7 



82.0 



71.0 



11.0 



8 



.822 



.919 



.667 



.252 



80.6 



85.0 



74.1 



10.9 



9 



.832 



.930 



.680 



.250 



83.6 



88.2 



75.6 



12.6 



10 



.830 



.932 



.687 



.245 



85.9 



91.0 



76.7 



14,3 



11 



.818 



.918 



.681 



.237 



88.4 



93.4 



78.0 



15.4 



Noon. 



.799 



.905 



.668 



.237 



89.9 



95.2 



79.6 



15.6 



1 



.766 



.885 



.636 



.249 



91.4 



96.6 



81.6 



15.0 



2 



.736 



.846 



.600 



.246 



92.3 



97.8 



84.3 



13.5 



3 



.710 



.838 



.570 



.268 



92.3 



98.8 



83.2 



15.6 



4 



.687 



.814 



.548 



.266 



91.4 



98.4 



80.4 



18.0 



5 



.682 



.802 



.529 



.273 



89.3 



96.8 



80.0 



16.8 



6 



.697 



.814 



.528 



.286 



85.9 



92.0 



75.4 



16.6 



7 



.720 



.834 



.541 



.293 



83.4 



89.3 



71.8 



17.5 



8 



.753 



.864 



.574 



.290 



81.7 



86.4 



70.6 



15.8 



9 



.776 



.898 



.591 



.307 



80.1 



85.0 



70.0 



15.0 



10 



.775 



.922 



.602 



.320 



79.1 



81.2 



70.0 



14.2 



11 



.773 



.932 



.598 



.334 



78.5 



84.1 



70.4 



13.7 



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. 



