Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of September, 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. 





C 0J 



Range of the Barometer 



a 2 



Range of the Tempera- 





!§»i| 



during the day. 



m 2 



ture dui 



ing the day. 





85 * 



























1 







a 2^ 



Max. 



Min. 



Diff. 



c 2 

 93 r-t 



Max. 



Min. 



Diff. 



Q 



S 









*k 











Inches. 



Inches. 



Inches. 



Inches. 







o 



o 



o 



1 



29.729 



29.794 



29.673 



0.121 



83.1 



87.8 



79.5 



8.3 



2 



.680 



.748 



.596 



.152 



84.0 



89.5 



81.5 



8.0 



3 



.608 



.677 



.553 



.124 



83.2 



88.2 



76.6 



11.6 



4 



.629 



.686 



.548 



.138 



82.6 



88.3 



79.0 



9.3 



5 



.624 



.697 



.543 



.154 



82.1 



87.8 



78.6 



9.2 



6 



Sunday. 

















7 



.536 



.585 



.456 



.129 



81.6 



86.0 



79.2 



6.8 



8 



.473 



.553 



.374 



.179 



77.8 



79.6 



76.8 



2.8 



9 



.566 



.662 



.488 



.174 



79.1 



83.0 



75.6 



7.4 



10 



.666 



.720 



.621 



.099 



80.3 



83,6 



78.5 



5.1 



11 



.738 



.805 



.679 



.126 



82.7 



88.4 



78.4 



10.0 



12 



.764 



.840 



.690 



.150 



84.2 



89.2 



80.0 



9.2 



13 



Sunday. 

















14 



.690 



.753 



.618 



.135 



85.1 



91.0 



82.4 



8.6 



15 



.746 



.814 



.685 



.129 



84.0 



90.2 



80.4 



9.8 



16 



.749 



.813 



.669 



.144 



85.5 



91.3 



81.4 



9.9 



17 



.718 



.790 



.637 



.153 



84.7 



89.4 



81.6 



7.8 



18 



.731 



.773 



.669 



.104 



81.2 



86.8 



76.4 



10.4 



19 



.772 



.820 



.732 



.088 



80.5 



84.6 



78.6 



6.0 



20 



Sunday. 

















21 



.800 



.848 



.755 



.093 



79.4 



82.3 



78.2 



4.1 



22 



.774 



.833 



.721 



.112 



81,2 



85.2 



79.1 



6.1 



23 



.776 



.837 



.722 



.115 



81.4 



87.2 



78.6 



8.6 



24 



.748 



.798 



.685 



.113 



81.7 



85.8 



78.0 



7.8 



25 



.763 



.823 



.697 



.126 



83.5 



89.2 



79.6 



9.6 



26 



.756 



.818 



.696 



.122 



82.0 



85.4 



79.6 



5.8 



27 



Sunday. 

















28 



.749 



.800 



.689 



.111 



85.3 



91.6 



80.1 



11.5 



29 



.781 



.834 



.722 



.112 



84.0 



90.6 



78.6 



12.0 



30 



.764 



.837 



.683 



.154 



83.6 



91.6 



77.4 



14.2 



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. 



