Meteorological Observations. xxiii 



Abstrae t of the Itesults of the Hourhj Meteorológica! Observations 

 t alcen at the Surveyor GeneraVs Office^ Calcutta, 

 in the month of July, 1860. 



MONTHLT EESULTS. 



Inches 



Mean heiglit of the Barometer for the month, . . . . 29.532 



Max. height of the Barometer occurred at 8 A. M. on the 18th, .. 29.644 



Min. height of the Barometer occurred at 4 P. M. on the llth, . . 29.373 



Extreme range of the Barometer during the month, . . . . 0.271 



Mean of the Daily Max. Pressures, .. .. .. 29.579 



Ditto ditto Min. ditto, .. .. .. .. 29.475 



Mean daily range of the Barometer during the month, . . . . 0.104 



o 



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



Max. Temperature occurred at 2 & 3 P. M. on the llth, .. .. 96.8 



Min. Temperature occurred at 4 A. M. on the 23rd, .. .. 77.0 



Extreme range of the Temperature during the month, . . . . 19.8 



Mean of the daily Max. Temperature, .. .. .. 88.8 



Ditto ditto Min. ditto, .. .. .. 80.3 



Mean daily range of the Temperature during the month, .. 8.5 



Mean Wet bulb Thermometer for the month, . . . . . . 80.7 



Mean Dry bulb Thermometer above mean Wet bulb Thermometer, . . 3.2 



Computed Mean-Dew point for the month, .. .. .. 79.1 



Mean Dry bulb Thermometer above computed mean Dew-point, .. 4.8 



Inches 

 Mean Elastic forcé of Yapour for the month, .. .. .. 0.973 



Troy grains 

 Mean Weight of Vapour for the month, . . • . . . 10.42 



Additional Weight of Vapour required for complete saturation, .. 1.71 



Mean degree of humidity for the month, complete saturation being unity, 0.86 



Inches 

 Rained 23 days, Max. fall of rain during 24 hours, .. .. 2.84 



Total amount of rain during the month, .. .. .. 17.92 



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



