Meteorological Observations. 



ci 



Abstract of the Resnlfs of the Hourl// Meteorological Observations 



taken at the Snrvet/or General's Office, Calcutta, 



in the month of December 1872. 



Monthly Uesults. 



Tnclies. 



Mean lieipflit of the Barometer for the Tnontli ... ... ... 29.977 



Max. lieiglifc of the Earometer occurred at 10 a. m. on the 26th ... 30.186 



Min. heiglit of tlie Barometer occurred at 4 p. m. on the 3rd. ... 29.766 



JExtreme range o^ tlie Barometer during the month ... ... 0.420 



Mean of the daily Max. Pressures ... ... ... ... 30.052 



Ditto ditto Min. ditto ... ... ... ... 29.920 



J/«?a;i c/ca'/y r(/;?pre of the Barometer during the mouth ... ... 0.132 



o 



Mean Dry Bulb Tliermometer for the month ... ... ... 7().o 



Max. Temperature occurred at2 p. m. on the 3rd ... ... 83.7 



Min. Temperature occurred at 6 & 7 a. m, on the 31st ... ... 57.4 



JExtreme range oi the Temperature duriiig tiie month ... ... 26.3 



Mean of tlie daily Max. Temperature ... ... ... ... 78.2 



Ditto ditto Min. ditto, ... ... ... ... 63.4 



Mean daily range oi the Temperature during the month ... ... 14.8 



Mean Wet Bulb Thermometer for the month ... ... ... 64.8 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 5.2 



Computed Mean Dew-point for the month ... ... ... 60.6 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 9.4 



Inches. 

 Mean Elastic force of Tapour for the month ... ... ... 0.534 



Troy grain. 

 Mean Weight of Tapour for tlie month ... ... ... 5.87 



Additional Weight of Vapour required for complete saturation ... 2.13 

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



o 



Mean Max. Solar radiation Thermometer for the month ... ... 132.4 



Inches. 

 Rained 3 days, — Max, fall of rain during 24 hours ... ... 0.06 



Total amount of rain during the montli ... ... ... 0.09 



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

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



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



* Height 70 feet 10 inches above ground. 



