Meteorological Observations. 



xxv 



Abstract of tlie Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of April, 1857. 



Latitude 22° 33' 1" North. Longitude 88° 20' 34" East. 



feet. 

 Height of the Cistern of the Standard Barometer above the Sea level, 18.11 



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

 dependent thereon. 







Range 



of the Barometer 



s 2 



Range of the Tempera- 





if 11 



during the day. 



pq » 



ture during the 



day. 





ffi ca^ 































Is 



p 



CO} 00 



Max. 



Min. 



Diff. 



a 03 



Max. 



Min. 



Diff. 





Inches. 



Inches. 



Inches. 



Inches. 



o 







o 







1 



29.794 



29.868 



29.733 



0.135 



84.1 



93.6 



76.8 



16.8 



2 



.780 



.860 



.710 



.150 



84.4 



94.0 



78.2 



15.8 



3 



.793 



.857 



.733 



.124 



84.2 



93.6 



78.4 



15.2 



4 



.817 



.914 



.733 



.181 



84.3 



92.6 



77.6 



15.0 



5 

 6 



Sunday. 



.854 



.929 



.773 



.156 



81.9 



90.6 



76.7 



13.9 



7 



.854 



.932 



.730 



.202 



78.9 



89.2 



70.0 



19.2 



8 



.858 



.932 



.778 



.154 



77.0 



85.6 



70.6 



15.0 



9 



.835 



.905 . 



.737 



.168 



78.2 



. 87.2 



69.4 



17.8 



10 



.794 



.866 



.696 



.170 



81.0 



90.2 



74.0 



16.2 



11 



.778 



.848 



.669 



.179 



81.6 



92.8 



71.6 



21.2 



12 

 13 



Sunday. 

 .699 



.771 



.632 



.139 



84.1 



93.8 



77.0 



16.8 



14 



.699 



.772 



.632 



.140 



84.4 



94.6 



76.6 



18.0 



15 



.698 



.775 



.606 



.169 



86.6 



96.2 



79.8 



16.4 



16 



.624 



.720 



.528 



.192 



87.7 



98.4 



80.2 



18.2 



17 



.622 



.687 



.565 



.122 



88.5 



98.1 



81.2 



16.9 



18 



.700 



.769 



.644 



.125 



86.7 



94.8 



81.0 



13.8 



19 

 20 



Sunday. 



.727 



.794 



.663 



.131 



85.0 



92.5 



77.0 



15.5 



21 



.748 



.829 



.671 



.158 



82.8 



93.8 



75.0 



18.8 



22 



.780 



.864 



.698 



.166 



79.9 



89.7 



71.1 



18.6 



23 



.824 



.911 



.693 



.218 



76.3 



84,8 



71.3 



13.5 



24 



.802 



.893 



.728 



.165 



79.5 



89.8 



69.5 



20.3 



25 



.786 



.860 



.698 



.162 



83.0 



92.0 



75.6 



16.4 



26 



27 



Sunday. 

 .731 



.792 



.660 



.132 



85.7 



94.8 



78.5 



16.3 



28 



.789 



.872 



.703 



.169 



83.9 



94,3 



74.6 



19.7 



29 



.722 



.806 



.633 



.173 



85.4 



96.0 



77.0 



19.0 



30 



.655 



.732 



.563 



.169 



87.3 



98.8 



79.8 



19.0 



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

 Thermometers are derived from the twenty-four hourly observations made during 

 the day. 



