Meteorological Observations. 



vu 



Abstract of tlie Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of June, 1859. 



Monthly Results. 



Mean height of the Barometer for the month, 



Max. height of the Barometer occurred at 10 A. M. on the 3rd, 



Min. height of the Barometer occurred at 8 A. m. on the 21st, 



"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. 

 29.532 

 29.730 

 29.059 



0.671 

 29.594 

 29.463 



0.131 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 4 P. M. on the 16th, 

 Min. Temperature occurred at 4 a. m. on the 6fch, . . 



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 



84.4 

 96.8 

 77.5 

 19.3 

 89.9 

 80.8 



9.1 



o 



80.4 



4.0 



78.4 



6.0 



Inches 



0.952 



Troy grains. 

 Mean Weight of Yapour for the month, .. .. .. 10.19 



Additional Weight of Yapour required for complete saturation, .. 2.12 



Mean degree of humidity for the month, complete saturation being unity, 0.83 



Rained 20 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, ' 

 Prevailing direction of the Wind, 



Inches. 



2.96 



12.48 



S. & S. W. 



