Meteorological Observations. lxxxiv 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of November 1873. 



Monthly Eesults. 



Indies. 



Mean height of the Barometer for tlie month ... ... ... 30.007 



Max. height of the Barometer occurred at 9 a. m. on the 17th ... 30.188 



Min. height of the Barometer occurred at 5 p. m. on the 1st ... 29.823 



Extreme range of the Barometer during the month ... ... 0.315 



Mean of the daily Max. Pressures ... ... ... ... 30.074 



Ditto ditto Min. ditto ... ... ... ... 29.950 



Mean daily range of the Barometer during the month ... ... 0.124 



o 



Mean Dry Bulb Thermometer for the month ... ... ... 75.6 



Max. Temperature occurred at 3 r. M. on the 6th ... ... 90.7 



Min. Temperature occurred at 6 a. m. on the 18th ... ... 64.0 



Extreme range of the Temperature during the month ... ... 26.7 



Mean of the daily Max. Temperature ... ... ... ... 83.9 



Ditto ditto Min. ditto, ... ... ... ... 68.7 



Mean daily range of the Temperature during the month ... ... 15.2 



Mean Wet Bulb Thermometer for the month ... ... ... 68.5 



Mean Dry Bidb Thermometer above Mean Wet Bulb Thermometer 7.1 



Computed Mean Dew-point for the month ... ... ... 63.5 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 12.1 



Inches. 

 Mean Elastic force of Vapour for the month ... ,., ... 0.588 



Troy grain. 

 Mean Weight of Vapour for the month ... ... ... 6.39 



Additional Weight of Vapour required for complete saturation ... 3.09 

 Mean degree of humidity for the month, complete saturation being unity 0.67 



o 

 Mean Max. Solar radiation Thermometer for the month ... ... 129.8 



Inches. 



Rained 4 days, — Max. fall of rain during 24 hours ... ... 0.09 



Total amount of rain during the month ... ... ... 0.14 



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

 meter during the month ... ... ... ... ... 0.05 



Prevailing direction of the Wind ... ... N. E. & E. 1ST E. 



* Height 70 feet 10 inches above ground. 



