Meteorological Observations. lxxxvii 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of November, 1865. 



Monthly Kesttlts. 



Inches 



Mean height of the Barometer for the month, .. .. .. 29.950 



Max. height of the Barometer occurred at 9 a. M. on the 19th, .. 30.164 



Min. height of the Barometer occurred at 4 p. M. on the 1st, ,. 29.732 



Extreme range of the Barometer during the month, .. .. 0.432 



Mean of the Daily Mas. Pressures,.. .. ,. .. 30.023 



Ditto ditto Min. ditto, .. .. .. .. 29.890 



Mean daily range of the Barometer during the month, .. ,. 0.133 



Mean Dry Bulb Thermometer for the month, .. .. ., 76.4 



Max. Temperature occurred at 3 P. M. on the 3rd, . . . , 88.2 



Min. Temperature occurred at 6 & 7 a. m. on the 28th & 29th, .. 61.6 



Extreme range of the Temperature during the month, .. .. 26.6 



Mean of the daily Max. Temperature, .. .. ,. 84.4 



Ditto ditto Min. ditto, .. .. .. .. 69.5 



Mean daily range of the Temperature during the month, .. ,, 14.9 



Mean Wet Bulb Thermometer for the month, .. .. .. 69.1 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, .. 7.3 



Computed Mean Dew-point for the month, .. .. ., 64.0 



Mean Dry Bulb Thermometer above computed Mean Dew-point, .. 12.4 



Inches 

 Mean Elastic force of Vapour for the month, .. .. ., 0.597 



Troy grains 

 Mean Weight of Vapour for the month, .. .. ,, 6.19 



Additional Weight of Vapour required for complete saturation, .. 3.23 



Mean degree of humidity for the month, complete saturation being unity, 0.67 



Inches 

 Bained No days, Max. fall of rain during 24 hours, .. .. Nil. 



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



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



