lxviii Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the mouth of August 1875. 



Monthly Results. 



Inches. 



Mean height of the Barometer for the month ... ... ... 29.618 



Max. height of the Barometer occurred at 11 a. m. oh the 30th ... 29.801) 



Min. height of the Barometer occurred at 4 p. sr. on the 13th ... 29.458 



JSd'treme range of the Barometer during the mouth ... ... 0.346 



Mean of the daily Max. Pressures ... ... ... . ..29.674 



Ditto ditto Min. ditto .... ... ... ... 29.553 



Mean daily range of the Barometer during the month ... ... 0.121 



o 



Mean Dry Bulb Thermometer for the month ... ... ... 82.7 



Max. Temperature occurred at 3 ' y. M. on the 12th. ... ... 91.4 



Min. Temperature occurred at 1 & 2 a. m. on the 26th. ... ... 76.9 



Extreme range of the Temperature during the month ... ... 14.5 



Mean of the daily Max. Temperature ... ... ... ... 87.6 



Ditto ditto Min. ditto, ... ... ... ... 79.5 



Mean daily range of the Temperature during the month ... ... 8.1 



Mean Wet Bull) Thermometer for the month ... ... ... 80.2 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 2.5 



Computed Mean Dew-point for the month ... ... ... 78.4 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 4.3 



Inches. 

 Mean Elastic force of Vapour for the month ... ... ... 0.952 



Troy grain. 

 Mean Weight of Vapour for the month ... ... ... 10.23 



Additional Weight of Vapour required for complete saturation ... 1.49 



Mean degree of humidity for the month, complete saturation being unity 0.87 



o 

 Mean Max. Solar radiation Thermometer for the month ... ... 136.4 



Inches. 



Rained 27 days, — Max. fall of rain during 24 hours ... ... 1.21 



Total amount of rain during the month ... ... ... 12.61 



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

 meter during the month ... ... ... ... ... 11.46 



Prevailing direction of the Wind ,., S. & S. E. 



* Height 70 feet 10 inches above ground. 



