Mi Meteorological Observations. 



Abstract of the Results of the Sourly Meteorological Observations 

 taken at the Surveyor OeneraVs Office, Calcutta, 

 in the month of January, 1860. 



Monthly Results. 



Inches. 



Mean height of the Barometer for the month, .. .. 30.017 



Max. height of the Barometer occurred at 9 A. SI. on the 13th, . . 30.203 



Min. height of the Barometer occurred at 4 P. M. on the 2d, .. 29.878 



'Extreme range of the Barometer during the month, . . . . 0.325 



Mean of the daily Max. Pressures, . . . . . . 30.096 



Ditto ditto Min. ditto, .. .. .. 29.958 



Mean daily range of the Barometers during the month, . . . . 0.138 



Mean Dry Bulb Thermometer for the month, . . . . 66.3 



Max. Temperature occurred at 3 p. M. on the 31st, .. .. 84.4 



Min. Temperature occurred at 7 A. M. on the 12th, .. .. 52.7 



Extreme range of the Temperature during the month, . . . . 31.7 



Mean of the daily Max. Temperatures, .. .. .. 77.5 



Ditto. ditto Min. ditto, .. .. .. 57.6 



Mean daily range of the Temperature during the month, .. 19.9 



o 

 Mean Wet Bulb Thermometer for the month, . . . . 60.2 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, . . 6.1 



Computed Mean Dew-point for the month, .. .. .. 56.5 



Mean Dry Bulb Thermometer above computed Mean Dew-point, . . 9.8 



Inches. 

 Mean Elastic force of Vapour for the month, . . . . 0.465 



Troy grains. 

 Mean Weight of Vapour for the month, .. .. .. 5.15 



Additional Weight of Vapour required for complete saturation, . . 2.0o 



Mean degree of humidity for the month, complete saturation being unity, 0.72 



Inches 

 Rained No days, Max. fall of rain during 24 hours, . . . . Nil. 



Total amount of rain during the month, . . . . . . Nil. 



Prevailing direction of the Wind, .. „. N. & N. W. 



