Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General 's Of ice, Calcutta, 



in the month of July, 1862. 



Monthly Results. 



Mean height of the Barometer for the month, 



Max. height of the Barometer occurred at 10 A. M. on the 81st, 



Min. height of the Barometer occurred at 4 p. M. on the 15th, 



'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 

 29.515 

 29.741 

 29.345 



0.396 

 29.571 

 29.452 



0.119 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 1 p. M. on the 5th, 

 Min. Temperature occurred at 5 A. M. on the 29th, 

 Extreme range of the Temperature during the month, 

 Mean of the daily Max. Temperature, 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperature during the month, 



83.2 

 94.0 

 77.4 

 16.6 

 87.9 

 79.8 

 8.1 



Mean Wet Bulb Thermometer for the month, 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer,. 

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



Mean Dry Bulb Thermometer above computed Mean Dew-point, . 



Mean Elastic force of Vapour for the month, 



80.2 

 3,0 



78.7 



4.5 



Inches 



0.961 



Troy grains 

 Mean Weight of Vapour for the month, . . . . . . 10.31 



Additional Weight of Vapour required for complete saturation, .. 1.58 



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



Rained 26 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches 



2.02 



13.31 



S. &S. E. 



