Ixxxv 



Meteorological Observations. 



Abstract of the liesnlts of the Hourly Meteorological Observations 

 taken at the Survet/or GeneraVs Office, Calcutta, 

 in the month of October 1874. 



Monthly Uesults. 



Indies. 



Mean lieiiijlit of tlie Barometer for tlie month ... ... ... 29.789 



Max. lieiglit of tlie Barometer occurred at 9 a. m. on tlie 31st ... 29.985 



Min. lieight of the Barometer occurred at 2 a. m. on tlie 16th ... 29.486 



Mxtreme range of the Barometer during the month ... ... 0.499 



Mean of the daily Max. Pressures ... ... ... ...29.855 



Ditto ditto Min. ditto ... ... ... ... 29.727 



Mean daily range of the Barometer during the month ... ... 0.128 



Mean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 1 ?. m. on the 12th 

 Min. Temperature occurred at 6 a. m. on the 21st 

 3<lxtreme 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 



Mean Wet; Bulb Thermometer for the month 



Mean Dry 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 the month 



o 



81.5 

 91.0 



74.0 

 17.0 



86.9 



77.7 



9.2 



77.9 

 3.6 



75.4 

 6.1 



Inches. 



. 0.865 



Troy grain. 

 Mean Weight of Vapour for the month ... ... ... 9.32 



Additional Weight of Vapour required for complete saturation ... 1.99 

 Mean degree of humidity for the month, complete saturation being unity 0.82 



Mean Max. Solar radiation Thermometer for the month 



o 

 136.3 



Rained 19 days, — Max. fall of rain during 24 hours ,,. 



Total amount of rain during the montli 



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



meter during the month 

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



Inches. 

 . 4.56 

 . 13.71 



. 12.24 



* Height 70 feet 10 inches above ground. 



