Meteorological Observations, 



xxm 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, in the 



month of March 1867. 



Monthly Results. 



Inches, 



Mean height of the Barometer for the month... ... ... 29.894 



Max. height of the Barometer occurred at 10 a. m. on the 9th ... 30.080 

 Min. height of the Barometer occurredat 4&5 p.m. on the 21st&22nd 29.725 



Extreme range oi the Barometer during the month ... ... 0.355 



Mean of the daily Max. Pressures ... ... ... ...29.970 



Ditto ditto Min. ditto ... ... ... ... 29.821 



Mean daily range of. the Barometer during the month ... ... 0.149 



Mean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 4 p. m. on the 3rd 

 Min. Temperature occurred at 5 a. m. on the 31st 

 Extreme 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... 



80.1 



94.2 

 68.6 

 25.6 

 89.9 



72.5 

 17.4 



Mean Wet Bulb Thermometer for the month ... 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 



Computed Mean Dew-point for the mouth 



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



Mean Elastic force of Vapour for the month 



72.7 



7.4 



67.5 



. 12.6 



Inches. 

 , 0.670 



Troy grain. 



Mean Weight of Vapour for the month ... ... ... 7.23 



Additional Weight of Vapour required for complete saturation ... 3.61 

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



Inches, 



Pained 9 days, — Max. fall of rain during 24 hours ... ... 1.15 



Total amount of rain during the month ... ... ... 1.57 



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

 meter during the month ... .... ... ... ... 1.36 



s.&s. s. w. 



Prevailing direction of the Wind. 



