4.\i Meteorological Observations. 



Abstract of /he liesults of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of March 1875. 



Hourly Means, Sic. of the Observations and of the Hygrometrical elements 

 dependent thereon. — (Continued). 



1 



Hour. 



Mean Wet Bulb Ther- 

 mometer. 



> 



o 



-§ 







n 

 >> 



Computed Dew Point. 



p 



> 

 o 



p w 



Mean Elastic force of 

 Vapour. 



Mean Weight of Vapour 

 in a Cubic foot of air. 



Additional Weight of 

 Vapour required for j 

 complete saturation. 



Mean degree ot Humi- 

 dity, complete satura- I 

 tion being unity. I 





o 







o 



o 



Tnclies. 



T. gr. 



T. gr. 





Mid- 



















night. 



74.1 



2.9 



72.1 



4,9 



0.778 



8.44 



1.45 



0.85 



1 



74.0 



2,6 



72.2 



4.4 



.781 



.48 



.29 



.Si 



2 



74.0 



2.3 



72.4 



3.9 



.785 



.53 



AG 



.88 



3 



73.8 



2.2 



72.3 



3.7 



.783 



.51 



.09 



.89 



4 



73.7 



J. 9 



72.4 



3.2 



.785 



.55 



0.93 



.90 



5 



73.5 



1.8 



72.2 



3.1 



.781 



.50 



.90 



.90 



6 



73.3 



1.7 



72.1 



2.9 



.778 



.48 



.83 



.91 



7 



73.5 



1.6 



72.4 



2.7 



.785 



.55 



.79 



.92 



8 



74,7 



2.2 



73.2 



3.7 



.806 



.75 



1.11 



.89 



9 



75.8 



4.5 



72.6 



7.7 



.790 



.52 



2.39 



.78 



10 



76.4 



7.0 



71.5 



11.9 



.763 



.18 



3.78 



.68 



11 



77.0 



9.6 



71.2 



15.4 



.756 



.05 



5.09 



.61 



Noon. 



76.9 



11.7 



69.9 



18.7 



.725 



7.68 



6.24 



.55 



1 



77.1 



13.1 



69.2 



21.0 



.708 



.48 



7.11 



.51 



2 



77.0 



14.3 



68.4 



22.9 



.690 



.27 



.79 



.48 



3 



77.0 



14,6 



68.2 



23.4 



.686 



.23 



.98 



.48 



4 



76. 6 



14.3 



68.0 



22.9 



.681 



.18 



.71 



.48 



5 



76.5 



12.4 



69.1 



19.8 



.706 



.47 



6.57 



.53 



6 



76.1 



9.7 



69.3 



16.5 



.711 



.56 



5.27 



.59 



7 



75.4 



7.5 



70.1 



12.8 



.729 



.82 



3.97 



.06 



8 



74 6 



5.9 



70.5 



10.0 



.739 



.97 



.01 



.73 



9 



74.6 



4.7 



71.3 



8.0 



.758 



8.20 



2.39 



.77 



10 



74.6 



3.8 



71.9 



6.5 



.773 



.36 



1.95 



.81 



11 



74.5 



3.3 



72.2 



5.6 



.781 



.45 



.68 



.83 



All the Hygrometrical elements are computed by the Greenwich Constants. 



