Meteorological Observations. 



xxm 



Abstract of the Results of tlie Hourly Meteorological Observations 



taken at the Surveyor GeneraVs Office, Calcutta, 



in the month of August, 1859. 



Monthly Besults. 



Mean height of the Barometer for the month, 

 Max. height of the Barometer occurred at 10 A. M. on the 8th, 

 Min. height of the Barometer occurred at 4 P. M. on the 29th, 

 "Extreme range of the Barometer during the month, 

 Mean of the daily Max. Pressures, 



Ditto ditto Min. ditto, 

 Mean daily range of the Barometers during the month, . . 



Inches 

 29.652 

 29.860 

 29.434, 



0.426 

 29.709 

 29.588 



0.121 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 3 p. M. on the 16th, 

 Min. Temperature occurred at Midnight on the 8th, 

 Extreme range of the Temperature during the month, 

 Mean of the daily Max. Temperatures, 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperature during the month, 



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, 



o 



82.6 

 90.6 

 76.2 

 14.4 

 87.4 

 79.4 



8.0 



o 



79.7 



2.9 



78.2 



4.4 



Inches 



0.946 



Troy grains 

 Mean Weight of Vapour for the month, .. .. .. 10.17 



Additional Weight of Vapour required for complete saturation, .. 1.51 



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



Rained 27 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches 

 11.56 

 21.22 



s. & s. vv 



