Meteorological Olsena tions. 



xxm 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of March 1868. 



Monthly Results. 



Indies. 



Mean height of the Barometer for the month... ... ... 29.885 



Max. height of the Barometer occurred at 10 v. m. on the 12(h ... 3(1105 



Min. height of the Barometer occurred at 5 p. m. on the 5th. ... 29719 



Extreme range o£ the Barometer during the month ... ... 0.386 



Mean of the daily Max. Pressures ... ... ..." ,V 29.962 



Ditto ditto Min. ditto ... ... ',,, ' 29.818 



Mean daily range of the Barometer during the month ... .,. 0.144 



Mean Dry Bulb Thermometer for the month ... 79.5 



Max. Temperature occurred at dp. m. on the 20th. ," ... 96.7 



Min. Temperature occurred at 7 v. m. on the 8th. ... ... 62.7 



Extreme range of the Temperature during the month ... ... 34.0 



Mean of the daily Max. Temperature ... 



90.0 



Ditto ditto Min. ditto, ... .'.'.' "'' [[' 71J 



Mean daily range of the Temperature during the month..." " .,, 18^9 



Mean Wet Bulb Thermometer for the month ... ... 71 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 8*5 



Computed Mean Dew-point for the month ... ... iti 65 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 145 



Inches. 

 Mean Elastic force of Vapour for the month ... ... ,,, 0.617 



Troy grain. 

 Mean Wei ght of Vapour for th e month ... ... ... 6.66 



Additional Weight of Vapour required for complete saturation !" 4.00 

 Mean degree of humidity for the month, complete saturation being unity 0.63 



Inches. 

 Rained 1 day,— Max. fall of rain during 24 hours ... ... 0.16 



Total amount of rain during the month ... ... ... 0.16 



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

 meter during the month ... ... ,. ... 10 



Prevailing direction of the Wind... ... " S. S. W. & S. " 



