Meteorological Observations, 



XT 



Abstract of the Results of the Hourly Meteorological Observatio7is 



taken at the Surveyor General's Office, Calcutta^ 



in the month of Febnmry 1874<. 



Monthly Hesults. 



Inches. 



Mean lieiglit of the Barometer for the month ... ... ... 29.955 



Max. lieight of tlie Barometer occurred at 10 a. m. on the 16th ... 30.182 



Min. heiglit of the Barometer occurred at 4 p. m. on the 10th ... 29.703 



Jlxtreme range ol the Barometer during the month ... ... 0.479 



Mean of the daily Max. Pressures ... ... ... ... 30.035 



Ditto ditto Min. ditto ... ... ... ... 29.892 



Mean daily range of the Barometer during the month ... ... 0.143 



o 



Mean Dry Bulb Thermometer for the month ... ... ,,, 72.2 



Max. Temperature occurred at 4 y. M. on the 22nd ... ... 89.3 



Min. Temperature occurred at 7 a. m. on the 16th... ... ... 67.0 



ii';r;(r(???«e ra;iye of tlie Temperature during the month ... ... 32.3 



Mean of the daily Max. Temperature ... ... ... ... 80.1 



Ditto ditto Min. ditto, ... ... ... ... 65.9 



Mean daily range of the Temperature during the montli ... ... 14.2 



Mean Wet Bulb Thermometer for the month ... ... ... 66.9 



Mean Dry Bulb Tliermometer above Mean Wet Bulb Thermometer 6.3 



Computed Mean Dew-point for the montli ... ... ... 62.7' 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 9.5- 



Inches. 

 Mean Elastic force of Yapour for the montli k., ... ... 0.572 



Troy grain.' 

 Mean Wei gbt of Vapour for the month ... ... ... 6.26 



Additional Weight of Vapour required for complete saturation ... 2.29 

 Mean degree of humidity for the month, complete saturation being unity 0.73 



o 

 Mean Max. Solar radiation Thermometer for the month ... ... 130.9 



Inches. 

 Eained 8 days, — Max. fall of rain during 24 hours ... ... 2.01 



Total amount of rain during the month ... ... ... 3.77 



Total amount of rain indicated by the Gauge* attached to the anemo- 

 meter during the month ... ... ... ... ••• ^-l' 



Prevailing direction of the Wind ... S. S. W., S. W. & E. by N. 



Height 70 feet 10 inches above ground. 



