Ixxvi 



Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October 1867. 



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

 dependent thereon. — (Continued.) 



Hour. 



Mean Wet Bulb Ther- 

 mometer. 



to 

 > 

 o 



a 



pq 



>> 



p 



g 

 '3 



to 

 P 



to 



s 



O 



a 



Dry Bulb above Dew 

 Point. 



Mean Elastic force of 

 Vapour. 



Mean Weight of Vapour 

 in a Cubic foot of air. 



Additional Weight of 

 Vapour required for 

 complete saturation. 



Mean degree of Humi- 

 dity, complete satura- 

 tion being unity. 





o 



o 



o 







Inches. 



T.gr. 



T.gr. 





Mid- 



















night. 



76.6 



2.3 



75.0 



3.9 



0.854 



9.24 



1.23 



0.88 



1 



76.4 



2.1 



74.9 



3.6 



.851 



.21 



.14 



.89 



2 



76.2 



1.9 



74.9 



3.2 



.851 



.22 



.00 



.90 



3 



76.0 



1.9 



74.7 



3.2 



.846 



.17 



0.99 



.90 



4 



75.9 



1.7 



74.7 



2.9 



.746 



.17 



.90 



.91 



5 



75.7 



1.7 



74.5 



2.9 



.840 



.12 



.89 



.91 



6 



75.7 



1.5 



74,6 



2.6 



.843 



.14 



.81 



.92 



7 



76.4 



1.7 



75.2 



2.9 



.860 



.31 



.91 



.91 



8 



77.2 



3.4 



74.8 



5.8 



.849 



.15 



1.86 



.83 



9 



77.6 



5.0 



74.1 



8.5 



.830 



8.91 



2.77 



.76 



10 



77.6 



6.3 



73.2 



10.7 



.806 



.63 



3.50 



.71 



11 



77.8 



7.3 



72.7 



12.4 



.792 



.47 



4.10 



.67 



Noon. 



77.6 



7.7 



72.2 



13.1 



.781 



.33 



.31 



.66 



1 



77.4 



7.9 



71.9 



13.4 



.773 



.26 



.38 



.65 



2 



77.4 



8.0 



71.8 



13.6 



.771 



.21 



' .47 



.65 



3 



77.5 



8.1 



71.8 



13.8 



.771 



.21 



.55 



.64 



4 



77.4 



7.5 



72.1 



12.8 



.778 



.31 



.18 



.67 



5 



77.4 



6.8 



72.6 



11.6 



.790 



.45 



3.79 



.69 



6 



77.3 



5.0 



73.8 



8.5 



.822 



.82 



2.76 



.76 



7 



77.1 



4.2 



74.2 



7.1 



.832 



.96 



.28 



.80 



8 



77.0 



3.6 



74.5 



6.1 



.840 



9.07 



1.94 



.82 



9 



76.8 



3.1 



74.6 



5.3 



.843 



.11 



.67 



.85 



10 



76.7 



2.7 



74.8 



4.6 



.849 



.17 



.45 



.86 



11 



76.5 



2.5 



74.7 



4.3 



.846 



.16 



.34 



.87 



AH the Hygrometrical elements are computed by the Greenwich Constants. 



