Meteorological Observations. 



lxxxvii 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor GeneraVs Office, Calcutta, 



in the month of November, 1864. 



Monthly Besults. 



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



Max. height of the Barometer occurred at 10 A. M. on the 11th, 

 Min. height of the Barometer occurred at 4 p. m. on the 7th, 

 '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 

 30.033 

 30.205 

 29.886 



0.319 

 30.106 

 29.976 



0.130 





Mean Dry Bulb Thermometer for the month, . . 

 Max. Temperature occurred at 1 P. M. on the 2nd, 

 Min. Temperature occurred at 6 a. m. on the 23rd, 

 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, 



75.6 

 89.2 

 62.6 

 26.6 

 82.4 

 69.8 

 12.6 



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 Yapour for the month, .. 



69.3 

 6.3 



64.9 



10.7 



Inches 



0.615 



Troy grains. 

 Mean Weight of Vapour for the month, . . . . . . 6.70 



Additional Weight of Vapour required for complete saturation, . . 2.78 



Mean degree of humidity for the month, complete saturation being unity, 0.71 



Rained 6 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, . . •• 



Inches 

 2.13 



2.89 

 N. & N. W. 



