lxviii Meteorological Observations. 



Abstract of the Besults of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of February, 1856. 



Monthly Besults. 



Inches. 

 Mean height of the Barometer, for the month, .. .. 29.963 



Max. height of the Barometer, occurred at 10 a. m. on the 19th, .. 30.143 



Min. height of the Barometer, occurred at 4 p. m, on the 27th, .. 29.762 



Extreme Range of the Barometer, during the month, .. .. 0.381 



o 



Mean dry bulb Thermometer for the month, .. .. 72.7 



Max. Temperature occurred at 3 p. m. on the 27th, .. .. 91.8 



Min. Temperature, occurred at 6 a. m, on the 8th, .. .. 56.8 



Extreme Range of the Temperature, during the month, .. .. 35.0 



Mean wet bulb Thermometer for the month, .. .. .. 65.5 



Mean dry bulb Thermometer above Mean wet bulb Thermometer, .. 7.2 



Computed Mean dew point for the month, .. .. .. 61.9 



Mean dry bulb Thermometer above computed Mean Dew point for the month, 10.8 



Inches. 

 Mean elastic force of vapour for the month, .. .. 0.557 



Troy grains. 

 Mean weight of vapour for the month, .. .. .. 6.09 



Additional weight of vapour required for complete saturation, .. 2.59 



Mean degree of humidity for the month, complete saturation being unity. 0.70 



Inches. 

 Total amount of Rain during the mouth, .. .. 0.00 



