Meteoroloyical Ohsertations. 



Vil 



Abstrae t of the Hesidts of tlie Ilourly Meteoroloqical Observations 



taJcen at the Surveyor GeneraVs Office, Calcutta, 

 in the month of May, 1S60. 



MONTHLY EESULTS. 



Mean height of the Barometer for the month, 



Max. height of the Barometer, oceurred at 9 A. M. on the 5th, 



Min. height of the Barometer, oceurred at 5 p. M. on the 31st, 



"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 

 29.613 



29.845 

 29.417 



0.428 

 29.682 

 29.537 



0.145 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature oceurred at 3 P. M. on the 21st, 

 Min. Temperature oceurred at 1 a. m. on the 4th, 

 Extreme range of the Temperature during the month, 

 Mean of the daily Max. Temperature, 



Ditto ditto Min. ditto, 

 Ilean 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 forcé of vapour for the month, 



o 



88.7 

 105.8 

 72.8 

 33.0 

 98.7 

 81.0 

 17.7 



o 



81.4 

 7.3 



77.7 



11.0 



Inches 



0.93x 



Troy grains 

 Mean weight of Yapour for the month, .. .. .. 9 gg 



Additional weight of Vapour required for complete saturation, .. 4.08 



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



Rained 8 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



luches 



0.94 



2.21 



S. & S. E. 



