Meteorological Observations, 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of October, 1S62. 



Monthly Results. 



Mean height of the Barometer for the month, 



Max. height of the Barometer occurred at 9 A. M. on the 31st, 



Min. height of the Barometer occurred at 3 A. it. on the 24th, 



"Extreme range of the Barometer during the month, 



Mean of the daily Max. Pressures, . . . . 



Ditto ditto Min. ditto, 

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



Inches 

 29V67 

 30.037 

 29.481 



0.556 

 29.837 

 29.704 



0.133 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 3 p. m. on the 1st, 

 Min. Temperature occurred at Midnight on the 30th, 

 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, 



80.9 

 90.9 



70.9 

 20.0 



86.1 



77.2 

 8.9 



Mean "Wet Bulb Thermometer for the month, . . . 



Mean Dry Bulb Thermometer above Mean "Wet Bulb Thermometer,. 

 Computed Mean Dew-point for the month, 

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



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



77.2 



3.7 



75.3 



5.6 



Inches 



0.862 



Troy grains 

 Mean Weight of Vapour for the month, .. .. .. 9.29 



Additional Weight of Vapour required for complete saturation, .. 1.81 



Mean degree of humidity for the month, complete saturation being unity, 0.84 



Rained 17 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the mouth, . . 

 Prevailing direction of the Wind, . , 



Inches 



3.83 



14.40 



S. 



