Meteorological Ohse rvaiions. 



xl 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office. Calcutta, 



in the month of October, 1865. 



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

 dependent thereon. 





ht of 

 meter 

 iht. 



Range of the Barometer 

 for each hour during 



J3 l^ 



>» o 



Q g 



1 Range of the Temperature 

 for each hour during 



Hour. 



a- w <m 





the month 







the month 























Max. 



Min. 



Diff. 





Max. 



Min. 



Diff. 





s 









2 











Inches. 



Inches. 



Inches. 



Inches. 















o 



Mid- 

 night, 



29.847 ' 



29.923 



29.732 



0.191 



81.1 



85.0 



76.4 



8.6 



1 



.839 



.918 



.719 



.199 



80.7 



84.3 



76.0 



8.3 



2 



.832 



.908 



.709 



.199 



80.3 



84.0 



75.2 



8.8 



3 



.828 



.903 



.706 



.197 



80.0 



83.6 



74.4 



92 



4 



.831 



.914 



.708 



.206 



79.6 



83.4 



73.6 



9.8 



5 



.844 



.931 



.722 



.209 



79.2 



83.3 



72.8 



10.5 



6 



.861 



.949 



.738 



.211 



79.0 



83.5 



72.6 



10.9 



7 



.882 



.974 



.754 



.220 



80.2 



85.0 



73.8 



11.2 



8 



.901 



.997 



.773 



.224 



82.8 



86.4 



77.4 



9.0 



9 



.915 



30.004 



.777 



.227 



84.8 



88.2 



79.8 



8.4 



10 



.914 



.005 



.766 



.239 



86.7 



90.0 



83.0 



7.0 



11 



.897 



29.988 



' .747 



.241 



88.3 



90.8 



83.6 



7.2 



Noon. 



.871 



.975 



.716 



.259 



89.4 



92.0 



86.6 



5.4 



1 



.840 



.919 



.695 



.224 



90.0 



92.8 



85.2 



7.6 



2 



.813 



.889 



.664 



.225 



90.4 



93.0 



85.3 



7.7 



3 



.798 



.871 



.648 



.223 



90.8 



93.2 



85.0 



8.2 



4 



.791 



.863 



.640 



.223 



90.2 



92.8 



84.4 



8.4 



5 



.798 



.873 



.649 



.224 



89.8 



93.4 



83 1 



10.3 



6 



.807 



.879 



.671 



.208 



86.5 



89.6 



81.6 



8.0 



7 



.824 



.894 



.690 



.204 



84.8 



88.4 



80.2 



8.2 



8 



.846 



.920 



.712 



.208 



83.8 



87.2 



78.8 



8.4 



9 



.857 



.930 



.727 



.203 



82.9 



86.6 



78.0 



8.6 



10 



.863 



.932 



.733 



.199 



82.1 



86.0 



77.0 



9.0 



11 



.857 



.934 



.734 



.200 



81.4 



85.6 



76.2 



9.4 



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

 mometer Means are derived from the Observations made at the several hours 

 daring the month. 



