iv Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor QeneraVs Office, Calcutta, 



in the month of January, 1864. 



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

 dependent thereon. — (Con 



Hour. 



CD 4-S 



Id 



CD 

 > 

 O 



m 



Q 



.s 



"o 



CD 

 ft 



CD 



Oh 



a 



o 



a 



Dry Bulb above Dew 

 Point. 



CD 

 W 



O 



*-« 



o . 



3 g« 



cs **-< 

 CD O 



Mean Weight of Va- 

 pour in a Cubic 

 foot of air. 



AdditionalWeight of 

 Vapour required 

 for complete satu- 

 ration. 



Mean degree of Hu- 

 midity, complete 

 saturation being 

 unity. 

















o Ir 



iches. 



Troy grs. 



Troy grs. 





Mid- 

 night. 



56.3 



4.2 



52.5 



8.0 



.407 



4.57 



1.40 



0.77 



1 



56.1 



38 



52.7 



7.2 



.409 



.60 



.25 



.79 



2 



55.6 



3.7 



52.3 



7.0 



.404 



.55 



.19 



.79 



3 



55.2 



3.4 



52.1 



6.5 



401 , 



.52 



.10 



.80 



4 



54.7 



3.2 



51.8 



6.1 



397 



.48 



.01 



.82 



5 



54.0 



3.0 



51.3 



5.7 



390 



.41 



0.93 



.83 



6 



53.9 



3.0 



51.2 



5.7 



389 



.40 



.92 



.83 



7 



53.2 



3.0 



50.2 



6.0 



376 



.26 



.95 



.82 



8 



55.2 



5.0 



50.7 



9.5 



382 



.29 



1.62 



.73 



9 



56.7 



6.5 



50.8 



12.4 



383 



.28 



2.21 



.66 



10 



58.2 



8.4 



51.5 



151 



393 



.36 



.85 



.61 



11 



59.4 



10,1 



51.3 



18.2 



.390 



.30 



3.58 



.55 



Noon. 



60.4 



11.8 



51.0 



21.2 



386 



.23 



4.32 



.50 



1 



60.9 



13.0 



51.8 



22.1 



397 



.33 



.68 



.48 



2 



61.6 



13.5 



52.1 



23.0 



.401 



.37 



.97 



.47 



3 



61.6 



13.7 



52 



23.3 



.400 



.35 



5.05 



.46 



4 



61.0 



12.9 



52.0 



21.9 



400 



.36 



4.65 



.48 



5 



61.3 



10.5 



52.9 



18.9 



.412 



.52 



3.93 



.54 



6 



61.3 



7.6 



55.2 



13.7 



445 



.91 



2.83 



.63 



7 



60.5 



6.0 



55.7 



10.8 



453 



5.02 



.17 



.70 



8 



59.6 



5.3 



55.4 



9.5 



449 



4.98 



1.87 



.73 



9 



586 



4.9 



54.2 



9.3 



431 



.80 



.75 



.73 



10 



58.1 



4.6 



54.0 



8.7 



428 



.77 



.62 



.75 



11 



57.5 



4.2 



53.7 



8.0 



423 



.74 



.45 



.77 



All the Hygrometrical elements are computed by the Greenwich Constants. 



