lxii Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor GeneraVs Office, Calcutta, 



in the month of August, 1857. 



Monthly Kesttlts. 



Inches. 

 Mean height of the Barometer for the month, . . . . 29.520 



Max. height of the Barometer, occurred at 10 & 11 P. M. on the 31st, . . 29.732 

 Min. height of the Barometer, occurred at 3 p. M. on the 19th, . . 29.239 



Extreme Range of the Barometer during the month, . . . . 0.493 



o 



Mean Dry Bulb Thermometer for the month, . . . . 82.0 



Max. Temperature, occurred at 2 p. m. on the 25th, and 4 P. M. on the 27th, 89.4 

 Min. Temperature, occurred at 7 A. M. on the 6th, .. .. 76-6 



Extreme Range of the Temperature during the month, . . . . 12.8 



o 



Mean Wet Bulb Thermometer for the month, .. .. 79.2 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, . . 2.8 



Computed Mean Dew Point for the month, . . . . 77.8 



Mean Dry Bulb Thermometer above computed Mean Dew Point, . . 4.2 



Inches. 

 Mean Elastic force of vapour for the month, .. .. .. 0.934 



Troy grains. 

 Mean weight of vapour for the month, . . . . . . 10.05 



Additional weight of vapour required for complete saturation, . . 1.42 



Mean degree of Humidity for the month, complete saturation being unity, 0.88 



Inches. 

 Rained 28 days. Max. fall of rain during 24 hours, .. .. 3.74 



Total amount of rain during the month, . . . . . . 18.70 



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



