Meteorological Observations. 



xli 



Abstract of the. Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October, 1860. 



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. 





2 S 



Range 



if the Barometer 



~5 S 



Range of the Tempera- 





E a <h 

 a ~3 « 



during the da 



y- 



P 3 



s J 



ture during the day. 



<a 



Max. 



Min. 



Diff. 



Max. 



Min. 



Diff. 



Q 



1 









§ 











Inches. 



Indies. 



Inches. 



Inches. 







o 











1 



29.659 



29.717 



29.600 



0.117 



82.1 



88.2 



80.0 



8.2 



2 



.632 



.679 



.570 



.109 



80.8 



83.4 



78.7 



4.7 



3 



.616 



.697 



.594 



.103 



83.5 



87.8 



80.0 



7.8 



4 



.712 



.766 



.655 



.111 



82.9 



85.8 



81.0 



4.8 



5 



.760 



.810 



.706 



.104 



83.4 



88.5 



79.6 



8.9 



6 



.831 



.883 



.7S6 



..097 



84.5 



91.2 



79.4 



11.8 



7 



Sunday. 

















8 



.851 



.927 



.810 



.117 



84.1 



89.4 



79.2 



10.2 



9 



.816 



.885 



.743 



.142 



81.7 



84.6 



79.6 



5.0 



10 



.807 



.872 



.760 



.112 



80.0 



81.6 



78.4 



3.2 



11 



.818 



.920 



.792 



.128 



82.9 



88.3 



78.8 



9.5 



12 



.874 



.940 



.811 



.129 



82.9 



89.0 



78.8 



10.2 



13 



.890 



.959 



.829 



.130 



83.0 



90.4 



79.0 



11.4 



14 



Sunday. 

















15 



.848 



.925 



.794 



.131 



82.7 



90.4 



79.6 



10.8 



16 



.847 



.917 



.792 



.125 



82.6 



87.6 



79.2 



8.4 



17 



.849 



.916 



.801 



.115 



83.2 



89.4 



79.0 



10.4 



18 



.872 



.946 



.817 



.129 



82.5 



89.2 . 



77.2 



12.0 



19 



.876 



.950 



.827 



.123 



81.6 



88.4 



75.4 



13.0 



20 



.855 



.921 



.811 



.110 



81.5 



88.6 



74.8 



13.8 



21 



Sunday. 

















22 



.865 



.945 



.809 



.136 



82.4 



89.0 



76.4 



12.6 



23 



.857 



.933 



.802 



.131 



81.3 



86.4 



76.4 



10.0 



24 



.859 



.930 



.809 



.121 



81.8 



88.8 



75.4 



13.4 



25 



.854 



.933 



.791 



.142 



82.0 



88.8 



75.8 



13.0 



26 



.827 



.908 



.758 



.150 



81.0 



87 8 



76.0 



11.8 



27 



.801 



.870 



.737 



.133 



•78.8 



85.0 



72.6 



12.4 



28 



Sunday. 

















29 



.749 



.802 



.702 



.100 



79.3 



85.2 



74.4 



10.8 



30 



.780 



.840 



.719 



.121 



80.3 



87.2 



74.6 



12.6 



31 



.800 



.871 



.741 



.130 



79.1 



85.8 



74.0 



11.8 



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

 Thermometers are derived from the twenty-four hourly observations made durin g 

 the day. 



