Meteorological Observations. 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General' s Office, Calcutta, 

 in the month of March, 1862. 



Monthly Results. 



Mean height of the Barometer for the month, 



Max. height of the Barometer occurred at 10 A. M. on the 14th 



Min. height of the Barometer occurred at 5 p. M. on the 1st, 



"Extreme range of the Barometer during the month, 



Mean of the daily Mas. Pressures, 



Ditto ditto Min. ditto, 

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



Inches. 

 29 900 

 30.115 

 29.660 



0.455 

 29.980 

 29.832 



0.148 



Mean Dry Bulb Thermometer for the month, 



Mas. Temperature occurred at 3 P. M. on the 22nd, 



Min. Temperature occurred at 6 A. m. & 8 p. m. on the 4th & 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, 



78.4 

 94.6 

 64.5 

 30.1 

 88.3 

 70.3 

 18.0 



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, 



o 



69.8 



8.6 



6.55 



12.9 



Inches 



0.628 



Troy grains. 

 Mean Weight of Vapour for the month, .. .. .. 6.80 



Additional Weight of Vapour required for complete saturation, .. 3.51 



Mean degree of humidity for the month, complete saturation being unity, 0.66 



Kained 3 days, Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches. 



1.58 



1.69 



S. &N. & S.W. 



