Meteorological Observations. 



Abstract of tlie Results of the Hourly Meteorological Observations 



taken at the Surveyor General' s Office, Calcutta, 



in the month of March, 1865. 



Monthly Kestjlts. 



Mean height of the Barometer for the month, . . 



Max. height of the Barometer occurred at 10 A. M. on the 1st & 16th, 



Min. height of the Barometer occurred at 5 p. m. on the 28th 



Extreme range of the Barometer during the mouth, 



Mean of the Daily Max. Pressures,.. 



Ditto ditto Miu. 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 28th, 

 Min. Temperature occurred at 7 a. m. on the 1st, 

 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 



.. . 



. 29.920 



1st & 16th, .. 



30.094 



8th, 



. 29.765 



.. • 



0.329 



• • • 



. 30.000 



.. . 



. 29.859 



.. 



0.141 





o 



• • • 



79.4 



• • . 



97.8 



. 



63.6 



.. 



34.2 



• • . 



88.5 



. 



71.6 



.. • 



16.9 



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, .. .. 



70.7 



8.7 



64.6 



14.8 



Inches 



0.609 



Troy grains 

 Mean Weight of Yapour for the month, .. .. .. 6.58 



Additional Weight of Vapour required for complete saturation, .. 4.04 



Mean degree of humidity for the month, complete saturation being unity, 0.62 



Eained 6 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, .. 



Prevailing direction of the Wind, .. .. 



Inches 

 1.08 

 1.96 

 .. S. & W. & N. W. 



