XIV 



Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observation* 



taken at the Surveyor GeneraVs Office, Calcutta, 



in the month of February, 1857. 



Monthly Eesults. 



Mean height of the Barometer for the month, 

 Max. height of the Barometer occurred at 10 A. M. on the 6th, 

 Min. height of the Barometer occurred at 4 P. m. on the 27th, 

 Extreme range of the Barometer during the month, 



Inches. 



29.887 



30.082 



29.697 



0.385 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 3 P. M. on the 23rd, 

 Min. Temperature occurred at 7 a. m. on the 13th, 

 Extreme range of the Temperature during the month, 



o 



75.0 

 89.8 

 60.5 



29.3 



Mean Wet Bulb Thermometer for the month, 



Mean Dry Bulb Thermometer above mean Wet Bulb Thermometer, 



Computed Mean Dew-point for the month, .. 



Mean Dry Bulb Thermometer above computed mean Dew-point, 



Mean Elastic force of Vapour for the month, 



o 

 67.3 



7.7 



63.4 



11.6 



Inches . 



0.586 



Mean Weight of Vapour for the month, 



Additional Weight of Vapour required for complete saturation, 



Mean degree of humidity for the month, complete saturation being unity 



Troy grains. 

 6.37 

 2.94 

 0.68 



Rained No. days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches. 



Nil. 



Nil. 

 S. &W. 



