lxxviii 



Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor OeneraVs Office, Calcutta, 

 in the month of January, 1862. 



Monthly Eesults. 



Mean height, of the Barometer for the month, 



Max. height of the Barometer occurred at 10 A. M. on the 3rd, 



Min. height of the Barometer occurred at 3 A. M. on the 27th, 



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, . . 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature occurred at 3 p. M. on the 16th, 

 Min. Temperature occurred at 7 A. M. on the 20th & 29th, 

 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, 



Inches. 

 30.009 

 30.183 

 29.768 

 0.415 

 30.084 

 29.955 

 0.129 



o 

 67.0 



78.3 

 55.2 

 23 1 

 75.0 

 60.6 

 14.4 



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, 



61.8 



5.2 



58.7 



8.3 



Inches 



0.501 



Troy grains 

 Mean Weight of Yapour for the month, .. .. .. 5.55 



Additional Weight of Vapour required for complete saturation, . . 1.75 



Mean degree of humidity for the month, complete saturation being unity, 0.76 



Rained 7 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches 

 0.47 

 1.03 



N. 



