Meteoro logica I Observations. 



XI 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of February, 1857. 



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

 dependent thereon. 





O <U 



-^ a -° 



■7; i_ Pej 



Ran;je of the Barometer for 



each hour during the 



month. 



j3 3 



.a 



. o 



Range of the Tempera- 

 ture for each hour 

 during the 



Hour. 



v 5 









Q 1 



l 



nontn. 





















C 0^ 



Max. 



Min. 



Diff. 





Max. 



Min. 



Diff. 





§ 









s 











Inches. 



Inches. 



Inches. 



Inches. 











o 







Mid- 

 night. 



29.896 



29.984 



29.773 



0.211 



70.8 



75.3 



64.0 



11.3 



1 



.889 



.990 



.759 



.231 



70.1 



74.8 



63.6 



11.2 



2 



.874 



.971 



.745 



.226 



69.7 



74.0 



63.7 



10.3 



3 



.863 



.959 



.734 



.225 



69.0 



73.5 



62.4 



11.1 



4 



.861 



.952 



.728 



.224 



68.4 



73.2 



61.6 



11.6 



5 



.869 



.968 



.742 



.226 



68.0 



73.1 



61.2 



11.9 



6 



.886 



.983 



.763 



.220 



67.5 



72.6 



60.6 



12.0 



7 



.912 



30.010 



.800 



.210 



67.4 



72.8 



60.5 



12.3 



8 



.939 



.048 



.820 



.228 



70.0 



75.8 



64,0 



11.8 



9 



.961 



.074 



.844 



.230 



73.5 



79.2 



68.2 



11.0 



10 



.971 



.082 



.846 



.236 



76.4 



82.3 



71.4 



10.9 



11 



.955 



.066 



.839 



.227 



79.1 



84.6 



73.2 



11.4 



Noon. 



.929 



.040 



.809 



.231 



81.5 



86.9 



73.8 



13.1 



1 



.892 



.003 



.777 



.226 



83.4 



88.8 



76.5 



12.3 



2 



.860 



29.966 



.747 



.219 



84.4 



89.4 



77.8 



11.6 



3 



.836 



.946 



.705 



.241 



84.7 



89.8 



78.9 



10.9 



4 



.826 



.932 



.697 



.235 



84,2 



89.6 



78.0 



11.6 



5 



.826 



.926 



.702 



.224 



82.6 



88.6 



76.6 



12.0 



6 



.833 



.939 



.715 



.224 



79.5 



84.0 



73.6 



10.4 



7 



.848 



.946 



.726 



.220 



76.9 



82.0 



71.5 



10.5 



8 



.869 



.979 



.762 



.217 



75.2 



79.5 



69.8 



9.7 



9 



.889 



.988 



.784 



.204 



73.9 



79.4 



67.8 



11.6 



10 



.900 



.991 



.788 



.203 



72.6 



77.6 



67.3 



10.3 



11 



.899 



.989 



.786 



.203 



71.6 



76.4 



65.0 



11.4 



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

 Thermometers are derived from the observations made at the several hours 

 during the month. 



