Meteorological Observations, 



lxviii 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of September 1870. 



Latitude 22° 83' V North. Longitude 88° 20' 34*" East. 



Height of the Cistern of the Standard Barometer above the sea level, 18.11 feet. 



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

 dependent thereon. 





o *■< 



liange o 



f the Barometer 





Range of the Tempera- 





r3 ° += 



during the day. 



fflf 



ture during the day. 





• r-c ft c3 

 W r£o 









«! 







Date. 

















^ W (M 









3 H 













Max. 



Min. 



Diff. 



c3 % 



<V r-M 



Max. 



Min. 



Diff. 





Inches. 



Inches. 



Inches. 



Inches. 



o 



o 



o 



o 



1 



29.589 



29.722 



29.512 



0.210 



80.3 



82.2 



78.7 



3.5 



2 



.771 



.836 



.703 



.133 



80.5 



86.0 



78.5 



7.5 



3 



.800 



.870 



.728 



.142 



81.6 



85.0 



79.5 



5.5 



4 



.735 



.787 



.670 



.117 



80.5 



85.5 



78.2 



73 



5 



.719 



.775 



.655 



.120 



81.3 



86.3 



77.8 



8.5 



6 



.737 



.795 



.6S2 



.113 



81.6 



86.4 



78.4 



8.0 



7 



.773 



.84 I 



.700 



.144 



82.4 



87.0 



78.5 



8.5 



8 



.748 



.804 



.681 



.123 



83.4 



87.5 



80.0 



7.5 



9 



.713 



.778 



.634 



.144 



83.6 



87.7 



80.0 



7.7 



10 



.705 



.753 



.626 



.127 



82.6 



89.1 



78.0 



11.1 



11 



.759 



.813 



.710 



.103 



81.3 



85.6 



78.0 



7.6 



12 



.768 



.817 



.709 



.108 



82.6 



88.8 



79.2 



9.6 



13 



.776 



.820 



.705 



.115 



85.0 



91.2 



80.2 



11.0 



14 



.792 



.847 



.720 



.127 



84.7 



91.2 



81.8 



9.4 



15 



.826 



.894 



.786 



.108 



81,0 



90.6 



81.0 



9.6 



16 



.810 



.881 



.725 



.156 



85.4 



91.4 



80.7 



10.7 



17 



.749 



.829 



.648 



.181 



86.8 



01.7 . 



82.0 



9.7 



18 



.709 



.769 



.645 



.124 



85.0 



92.0 



82,0 



10.0 



19 



.701 



.766 



.621 



.145 



85.0 



91.5 



81.0 



10.5 



20 



.662 



.728 



.584 



.144 



85.4 



92.0 



81.5 



10.5 



21 



.635 



.706 



.559 



.147 



81.9 



87.3 



80.0 



7.3 



22 



.557 



.611 



.487 



.124 



82.4 



88.0 



79.2 



8.8 



23 



.574 



.639 



.511 



.128 



82.1 



85.2 



79.5 



5.7 



24 



.569 



.624 



.504 



.120 



83.3 



86.8 



80.0 



6.8 



25 



.573 



.625 



.521 



.104 



83.9 



88.0 



81.0 



7.0 



26 



.603 



.668 



.536 



.132 



83.8 



89.0 



80.0 



9.0 



27 



.622 



.669 



.561 



.108 



84.1 



89.5 



i 80.5 



9.0 



28 



.661 



.712 



.602 



.110 



84.6 



90.4 



80.0 



10.4 



29 



.693 



.740 



.610 



.100 



82 5 



88.0 



80.3 



7.7 



30 



.745 



.809 



.689 



.120 



84.0 



89.5 



1 80.0 



9.5 



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

 Thermometer Means are derived, from the hourly observations, made at the 

 several hours during the day. 



