Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of May, 1S62. 



Monthly Kesults. 



Mean height of the Barometer for the month, 



Max. height of the Barometer occurred at 10 A. H. on the 6th, 



Min. height of the Barometer occurred at 5 p. M. on the 29th, 



'Extreme range of the Barometer dming the month, 



Mean of the daily Max. Pressures, 



Ditto ditto Min. ditto, 

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



Inches 

 29.684 

 29.919 

 29.474 



0.445 

 29.754 

 29.614 



0.140 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 3 p. jr. on the 28th, 

 Min. Temperature occurred at 7 A. M. on the 6th, 

 Extreme range of the Temperature during the month, . . 

 Mean of the daily Max. Temperature, 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperature during the month, 



o 



85.4 

 103.2 



72.2 

 31 

 94.1 

 78.5 

 15.6 



Mean "Wet Bidb 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 



79.0 

 6.4 



75.8 



9.6 



Inches 



0.876 



Troy grains. 

 Mean Weight of Vapour for the month, .. .. .. 9.35 



Additional Weight of Vapour required for complete saturation, .. 3.33 



Mean degree of humidity for the month, complete saturation being unity, 0.74 



Rained 11 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches 

 1.26 

 3.80 



S, 



