Meteorological ObservatioTtA . 



irn 



Mi&tract of the Results of the Hcurlt/ Meteorological Observationi, 



taken at the Surve//or General's Office, Calcntta, 



in the month of February 1872. 



Monthly IhcsuLxs. 



Mean lieitjlit of tlie Barometer for tlie nioiith 



Max. Jieiglit of llie Jiaroiiieter occurred at 10 a. m. on tlie IGtli. 



Min. height of tlie Jiaronieter occurred at 5 p. m. on the 7th. 



Extreme range of the Barometer during the month 



Mean of the daily IMax. Pressures 



Ditto ditto i\[in. ditto 



Mean dailg range of the Barometer during the month 



Inclies> 

 29.958 

 30.133 

 29.809 



0.324 

 30.038 

 29.901 



0.137 



jJifean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 3 r. m. ou the 29tli. 

 Min. Temperature occurred at 7 a. m, ou the 9th & lOtli 

 Jixtreme 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 

 72.5 



89.7 

 58.0 

 31.7 

 80.7 

 65.3 

 15.4 



Mean Wet Bulb Thermometer for the month 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 



Computed Mean Dew-point for tlie month 



Mean Dry Bulb Thermometer above computed mean Dew-point 



Mean Elastic force of Vapour for the month 



. 66.4 



6.1 



61.5 



ll.O 



Inches. 

 , 0.55Q 



]^ean Weight of Yapour for the month 



Additional Weight of Vapour required for complete saturation 



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

 ]^-ean Max. Solar radiation Thermometer for the month. ... 



Troy grain. 

 ... 6.02 

 ... 2.61 

 0.70 



o 

 133.5 



Inches. 

 Itained 7 days, — Max. fall of rain during 24 hours ... ... 1 37 



Total amount of rain during the montli ,,, ... ... 2.82 



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

 during the month ... ... ... ... ... ... 2.34 



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



♦ Height 70 feet 10 inches above ground. 



