IXXXT 



Meteorological Olservailons. 



jLbsfracf of ihe Bemlts of the Hourly Meteorological Observationt 

 taken, at the Siirvei/or General's OJJicey Calcutta^ 

 in the month of October 1872» 



Monthly IIesdlts. 



Moan heiglit of tlie Barometer for the month. 



Max. height of the Barometer occurred at 9 a. M. on the 21st 



Min. height of the Barometer occurred at 4 p. m. on the Ist. 



ILxtreme range of the Barometer during the mouth 



Mean of the daily ]\Iax. Pressures 



Ditto ditto Min. ditto 

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



Inches. 



, 29.827 

 , 30.005 

 29.623 

 0.382 

 , 29.890 

 , 29.709 

 , 0.121 



Mean Dry Bulb Thermometer for the month 

 ]Max. Temperature occurred at 2 r. M. on the 6th 

 ]\Iiu. Temperature occurred at 6 a. m, on the 25th 

 l\.xtreme range of the Temperature during the month 

 ]\Iean of the daily Max. Temperature 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperatm'e during the month 



o 



81.4 

 91.3 

 71.5 

 19.8 

 86.8 

 77.1 

 9.7 



Mean TVet Bulb Tliermoraeter for the month 



!Mean Dry Bull) Thcrmonieter 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 the month 



. 77.6 

 3.9 



. 74.8 

 6.6 



Inches. 

 . - 0.849 



Troy grain. 

 Mean "Weight of Ynpour for the month ... ... ... 9.13 



Additional Weight of Vapour required for complete saturation ... 2.14 

 Mean degree of humidity for the month, complete satm*ation being unity 0.81 



Mean Max. Solar radiation Thermometer for the month 



o 

 140.1 



Inches. 

 Bained 13 days, — Max. fall of rain during 24 hours ... ... 3.90 



Total amount of rain during the month ... ... ... 8.93 



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

 during the month ... ... ... ... ... ... 7.89 



Prevailing direction of the Wind ... ,., E. N. E. & N. E. 



Height 70 feet 10 inches aboTe ground. 



