Meteorological Ohservations. 



lxxi 



Ábstract of the Besults of the Hourly Meteorological Ohservations 



tahen at the Surveyor General* s Office, Calcutta, 



in the month of February, 1860. 



MONTHLT EESULTS. 



Mean height of the Barometer for the month, 



Max. height of the Barometer occurred at 9 A. M. on the l7th, 



Min. height of the Barometer occurred at 5 p. M. on the 29th, 



"Extreme range of the Barometer during the month, 



Mean of the daily Max. Pressures, 



Ditto ditto Min. ditto, 

 Mean daily range of the Barometer during the month, . . 



Inches 

 29.913 

 30.095 

 29.688 



0.407 

 29.994, 

 29.846 



0.148 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 3 p. M. on the 28th, 

 Min. Temperature occurred at 7 A. M. on the 22nd, 

 Extreme range of the Temperature during the month, . . 

 Mean of the daily Max. Temperatures, 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperature during the month, 



Mean Wet Bulb Thermometer for the month, 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, . . 



Computed Mean De w-point for the month, .. 



Mean Dry Bulb Thermometer above computed Mean Dew-point, 



Mean Elastic forcé of Yapour for the month, 



o 



75.8 

 93.4 

 63.6 

 29.8 

 85.7 

 67.9 

 17.6 



o 



68.4 



7.4 



64.7 



11.1 



Inches 



0.611 



Troy graina 

 Mean Weight of Yapour for the month, .. .. .. 6.65 



Additional Weight of Yapour required for complete saturation, .. 2.89 



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



Rained 2 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches 

 0.09 

 0.09 



s. & s. w. 



