Meteorological Observations. 



lxxv 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor OeneraVs Office, Calcutta, 

 in the month of October, 1858. 



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

 dependent thereon. 





O 0) 



Range of the Barometer for 



each hour during the 



month. 





Range of the Tempera- 

 ture for each hour 

 during the 



Hour. 











fig 



month. 





















Max. 



Min. 



Diff. 



a A 



Max. 



Min. 



Diff. 





g 









!§ 











Inches. 



Inches. 



Inches. 



Inches. 



o 



o 



o 



o 



Mid- 

 night. 

 1 



29.824 



29.937 



29.349 



0.588 



78.5 



82.2 



71.6 



10.6 



.810 



.926 



.329 



.597 



78.1 



82.0 



71.3 



10.7 



2 



.801 



.924 



.310 



.614 



77.8 



81.7 



71.0 



10.7 



3 



.796 



.913 



.291 



.622 



77.3 



81.6 



71.0 



10.6 



4 



.798 



.934 



.341 



.593 



76.9 



81.3 



69.8 



11.5 



5 



.810 



.946 



.393 



.553 



76.8 



80.8 



69.8 



11.0 



6 



.837 



.974 



.521 



.453 



76.5 



80.6 



69.2 



11.4 



7 



.859 



30.003 



.597 



.406 



77.1 



81.8 



70.6 



11.2 



8 



.896 



.029 



.696 



.333 



80.8 



85.6 



76.2 



9.4 



9 



.898 



.043 



.682 



.361 



81.9 



86.0 



73.6 



12.4 



10 



.896 



.049 



.689 



.360 



83.0 



87.0 



74.2 



12.8 



11 



.881 



.023 



.678 



.345 



84.5 



89.2 



74.4 



14.8 



Noon. 



.857 



.001 



.654 



.347 



85.7 



90.2 



73.6 



16.6 



1 



.831 



29.982 



.636 



.346 



86.3 



89.8 



75 



14.8 



2 



.803 



.950 



.573 



.377 



86.9 



90.6 



75.4 



15.2 



3 



.787 



.948 



.539 



.409 



87.0 



90.6 



75.6 



15.0 



4 



.780 



.941 



.528 



.413 



86.2 



90.6 



75.0 



15.6 



5 



.783 



.943 



.507 



.436 



84.8 



89.2 



75.0 



14.2 



6 



.789 



.955 



•505 



.450 



83.0 



87.0 



74.4 



12.6 



7 



.809 



.966 



.513 



.453 



81.7 



86.0 



73.2 



12.8 



8 



.827 



.984 



.518 



.466 



80.8 



85.5 



72.8 



12.7 



9 



.838 



.996 



.496 



.500 



80.0 



84.6 



72.6 



12.0 



10 



.843 



30.002 



.462 



.540 



79.4 



83.7 



72.0 



11.7 



11 



.841 



.005 



.459 



.546 



79.0 



83.4 



71.6 



11.8 



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. 



