Meteorological Observations. xxiii 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta } in the 



month of March 1806. 



Monthly Results. 



Inches. 



Mean height of the Barometer for the month,... ... ... 29.811 



Max. height of the Barometer occurred at 10 a. m. on the 12th, ... 30.060 



Min. height of the Barometer occurred at 5 p. m. on the 22nd, ... 29.619 



Extreme range of the Barometer during the month, ... ... 0.441 



Mean of the daily Max. Pressures, ... ... ... ...29.893 



Ditto ditto Min. ditto ... ... ... ... 29.740 



Mean daily range of the Barometer during the month, ... ... 0.153 



Mean Dry Bulh Thermometer for the month, ... ... ... 83.9 



Max. Temperature occurred at 4 p. m. on the 22nd, ... ... 98.6 



Min. Temperature occurred at 7 a. m. on the 6th, ... ... 71.4 



Extreme range of the Temperature during the month, ... ... 27.2 



Mean of the daily Max. Temperature ... ... ... ... 94.3 



Ditto ditto Min. ditto, ... ... ... ... 76.1 



Mean daily range of the Temperature during the month,... ... 18.2 



Mean Wet Bulb Thermometer for the month, ... ... ... 75.1 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, 8.8 



Computed Mean Dew-point for the month, ... ... ... 68.9 



Mean Dry Bulb Thermometer abov T e computed mean Dew-point. ... 15.0 



Inches. 



Mean Elastic force of Vapour for the month, ... ... ... 0.701 



Troy grains. 



Mean Weight of Vapour for the month ... ... ... 7.51 



Additional Weight of Vapour required for complete saturation, ... 4.62 

 Mean degree of humidity for the month, complete saturation being unity 0.62 



Inches. 



Drizzled 2 days, — Max. fall of rain during 24 hours ... ... Nil 



Total amount of rain during the month, ... ... ... Nil 



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



