Meteorological Observations. xciii 



Abstract of the Results of the Hourly Meteorolofwal Observations 

 taken at the Surveyor General's Office, Calcutta^ 

 in the mouth of November 1874. 



Monthly IIesults. 



Indies. 



Mean height of tlie IBarometer for the month ... ... ... 29.982 



Max. lieight of the Barometer occurred at 9 a. m. on tlie 26tli ... 30.130 



Min. heiglit of the Barometer occurred at 4 p. m. ou the 7th ... 29.872 



lljctveme range of the Barometer during the month ... ... 0.258 



Mean of the daily Max. Pressures ... ... ... ... 30.050 



Ditto ditto Min. ditto ... ... ... ... 29.929 



Mean daily range of the Barometer during the mouth ... ... 0.121 



o 



Mean Dry Bulb Thermometer for tlie month ... ... ... 74.9 



Max. Temperature occurred at 1 & 3 y. m. on the 5th ... ... 87.3 



Min. Temperature occurred at 7 A. m. on the 30th ... 61.3 



JiJd'trenie range o? the Temperature during the month ... ... 26. 



Mean of the daily Max. Temperature ... ... ... ... 81.6 



Ditto ditto Min. ditto, ... ... ... ... 69.6 



Mean daily range of the Temperature during the month ... ... 12.0 



Mean Wet Bulb Thermometer for the month ... ... ... 69.3 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 5.6 



Computed Mean Dew-point for the month ... ... ... 65.4 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 9.5 



Inches. 

 Mean Elastic force of Vapour for the month ... ,,. ... 0.626 



Troy grain. 

 Mean Weight of Yapour for the month ... ... ... 6.81 



Additional Weight of Yapour required for complete saturation ... 2.47 

 Mean degree of humidity for the month, complete saturation being unity 0.73 



o 

 Mean Max. Solar radiation Thermometer for the month ... ... 128.8 



Inches. 

 Rained 6 days, — Max. fall of rain during 24 hours ... ... 0.06 



Total amount of rain during the month ... ... ... 0.12 



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

 meter during the month ... ... ... ... ... 0.06 



Prevailing direction of the Wind ... N. by W. & E. by K 



* Height 70 feet 10 inches above ground. 



