Ixxvii Meteorological Ohservat'wns. 



Abslracl of (he. Besulls of the Hourly Aleteorological Observations 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of 8e])tember 1876. 



Monthly Eksults. 



Indies. 



Mean lieiglit of the Barometer for tlie month ... ... ... 29.705 



Max.Iieightoftlie Barometer occurred at 9 & 10 a. m. on tlie 29th ... 29.9J9 



Min. heiglit of tlie Barometer occurred at 5 p. m. on tlie 1st ... 29.389 



Extreme range oi tlie Barometer during the month ... ... 0.560 



Mean of the daily Max. Pressures ... ... ... .., 29.764 



Ditto ditto Min. ditto ... ... ... ... 29.641 



Mean daily range oi the Barometer during the month ... ...* 0.123 



o 



Mean Dry Bulb Thermometer for the month ... ... ... 82.9 



Max. Temperature occurred at 2 & 4 p. m. on the 14th ... ... 92.0 



Min. Temperature occurred at 6 A. M. on the 2ud ... ... 77.0 



Hxtreme range oi the Temperature during the month ... ... 15.0 



Mean of the daily Max. Temperature ... ... ... ... 88.1 



Ditto ditto Min. ditto, ... ... ... ... 79.8 



Mean daily range of the Temperature during the month ... ... 8.3 



Mean Wet Bulb Thermometer for the month ... ... ... 80.1 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 2.8 



Computed Mean Dew-point for the month ... ... ... 78.1 



Mean Dry Bulb Thermometer above computed mean Dew-point ... ,4.8 



Inches. 

 Mean Elastic force of Vapoxir for the month ... ... ... 0.943 



Grain. 

 Mean Weight of Yapour for the month ... ... ... 10.12 



Additional Weight of Vapour required for complete saturation ... 1.G7 

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



o 

 Mean Max. Solar radiation Thermometer for the month ... ... 139.1 



Inches. 

 Uained 25 days, — Max. fall of rain during 24 hours ... ... 2.01 



Total amount of rain during the month ... ... ,.. 10.26 



Total amountof rain indicated by the Gauge* attached to the anemo- 

 meter during the month ... ... ... ... ... 8.91 



Prevailing direction of the Wind ... ... S, S by E & S S E 



* HcigLt 70 feet 10 inches above ground. 



