Ixvii 



Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observation* 



taken at the Surveyor General' 's Office, Calcutta, 

 in the month of August 1873. 



Monthly Results. 



Mean height of the Barometer for the month 



Max. height of the Barometer occurred at 10 and 11 a.m. on the 



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 

 JSlean daily range of the Barometer during the month ... 



12th 



Inches. 



. 29.637 



. 29.798 



. 29.426 



. 0.372 



, 29.694 



, 29.574 



, 0.120 



Mean Dry Bulh Thermometer for the month 



Max. Temperature occurred at 2 & 4 y. m. on the 21st and 25th 



Min. Temperature occurred at 9 p. m. on the 11th 



lixtreme range of the Temperature during the month 



Mean of the daily Max. Temperature 



Ditto ditto Min. ditto, 

 JLTean daily range of the Temperature during the month ... 



o 



83.3 

 92.3 



76.6 

 15.7 



88.3 



80.0 



8.3 



Mean Wet Bulb Thermometer for the month 



Mean Dry Bulh 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 



,. 80.6 

 2.7 



. 78.7 

 4.6 



Inches. 

 . 0.961 



Troy grain. 

 Mean Weight of Vapour for the month ... ... ... 10.31 



Additional Weight of Vapour required for complete saturation ... 1.62 

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



Mean Max. Solar radiation Thermometer for the month 



o 

 139.9 



Pained 27 days, — Max. fall of rain during 24 hours 

 Total amount of rain during the month 

 Total amount of rain indicated by the Gauge* attached to the anemo- 

 meter during the month 

 Prevailing direction of the Wind ... ... S. S. W & 



Inches. 



1.27 

 10.23 



9.84. 

 S. E. 



* Height 70 feet 10 inches above ground. 



