xlii 



Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October, 1860. 



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



dependent thereon. — fContinued.J 



Date. 



Mean Wet Bulb Thermo- 

 meter. 



43 



CD 

 > 

 O 

 X> 

 OS 



Si 



m 



a 

 'o 



Ph 



Q 



s 



a 



o 

 O 



Q 



a 



> 

 o 



X> 

 GS 



-O 



'o 

 hPn 



Q 



o 



<o 

 u 



o 



o 



a! . 



W 3 

 O 



c & 



r=5 



Mean Weight of Vapour 

 in a cubic foot of Air. 



Additional Weight of Va- 

 pour required for com- 

 plete saturation. 



Mean degree of Humidity, 

 complete saturation be- 

 ing unity. 





o 















Inches. 



T. gr. 



T. gr. 





1 



80.0 



2.1 



78.9 



3.2 



0.967 



10.41 



1.10 



0.90 



2 



78.7 



2.1 



77.6 



3.2 



.928 



.01 



.06 



.90 



3 



79.5 



4.0 



77.5 



6.0 



.925 



9.92 



2.08 



.83 



4 



78.6 



4.3 



76.4 



6.5 



.893 



.58 



.21 



.81 



5 



79.3 



4.1 



77.2 



6.2 



.916 



.83 



.13 



.82 



6 



79.1 



5.4 



76.4 



8.1 



.893 



.56 



.79 



.77 



7 



Sunday. 

















8 



78.9 



5.2 



76.3 



7.8 



.890 



.53 



.6S 



.78 



9 



79.1 



2.6 



77.8 



3.9 



.934 



10.05 



1.32 



.88 



10 



77.9 



2.1 



76.8 



3.2 



.905 



9.77 



.04 



.90 



11 



78.5 



4.4 



76.3 



6.6 



.S90 



.55 



2.24 



.81 



12 



78.6 



4.3 



76.4 



6.5 



.893 



.58 



.21 



.SI 



13 



79.1 



3.9 



77.1 



5.9 



.913 



.80 



.02 



.83 



14 



Sunday. 

















15 



78.8 



3.9 



76.8 



5.9 



.905 



.71 



.01 



.83 



16 



79.1 



3.5 



77.3 



5.3 



.919 



.88 



1.80 



.85 



1? 



78.2 



5.0 



75.7 



7.5 



.873 



.36 



2.53 



.79 



18 



76.2 



6.3 



73.0 



9.5 



.801 



S.58 



3.06 



.74 



19 



74,7 



6.9 



71.2 



10.4 



.756 



.13 



.21 



.72 



20 



75.6 



5.9 



72.6 



8.9 



.790 



.50 



2.81 



.75 



21 



Sunday. 

















22 



75.9 



6.5 



72.6 



9.8 



.790 



.49 



3.12 



.73 



23 



75.5 



5.8 



72.6 



8.7 



.790 



.50 



2.74 



.76 



24 



75.7 



6.1 



72.6 



9.2 



.790 



.50 



.90 



.75 



25 



76.2 



5.8 



73.3 



8.7 



.809 



.6S 



.79 



.76 



26 



73.2 



7.8 



69.3 



11.7 



.711 



7.64 



3.50 



.69 



27 



71.1 



7.7 



67.2 



11.6 



.664 



.17 



.27 



.69 



28 



Sunday- 

















29 



74.4 



4.9 



71.9 



7.4 



.773 



S.36 



2.23 



.79 



30 



74.7 



5.6 



71.9 



8.4 



.773 



.34 



.57 



.76 



31 



71.2 



7.9 



67.2 



11.9 



.664 



7.17 



3.36 



.6S 



All the Hygrometrical elements are computed by the Greenwich Constants. 



