Meteorological Ohservatmis. 



Al'Sfracf of (he licsnlls of (he ITourlij Me(eorological Observations 

 taken at the Survez/or General's Ojjlcef Calcutta^ 

 in the mon(h of Sej^temher 1872. 



Monthly Eesults. 



Mean heiglit of tlie Barometer for the month 



Max. heiijjlit of the Barometer occurred at 10 a. m. on the 1st. 



Min. height of the Barometer occurred at 5 a. m. ontho 20 th. 



JLxtveme range of tlie Barometer during the month 



Mean of tlie daily Max. Pressures 



Ditto ditto ]Mi)i. ditto 

 Mean daily range of the Barometer during the month 



Inches. 

 , 29.725 

 . 29.885 

 . 29.509 

 0.376 

 , 29.790 

 , 29.057 

 , 0.133 



Mean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 2 p. M. on tlio 15th 

 Min. Temperature occurred at 10 p. m, on the 5th 

 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 tlie month 



o 

 83.1 

 92.6 



76.7 

 15.9 



88.2 



79.4 



8.8 



Mean "Wet Bulb Tliermometer for the month 



Mean Drj^ 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 Yapour for tlie month 



. 80.1 

 3.0 



, 78.0 

 5.1 



Inches. 

 . 0.940 



Troy grain. 

 Mean Weight of Yapour for the month ... ... ... 10.09 



Additional \Veight of Yapour required for complete saturation ... 1.77 

 Mean degree of humidity for the month, complete saturation being unity 0.85 



Mean Max. Solar radiation Thermometer for the month 



o 



138.8 



Inches. 

 Eained 18 days, — Max. fall of rain during 21 hours ... ... 1.67 



Total amount of rain during the month ... ... ... 8.42 



Total amount of rain indicated by the Gauge* attached to the anemometer 

 during the month ... ... ... ... ... ... '*7.39 



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



■ Height 70 feet 10 inches abore ground. 



