Ixxviii 



Meteorological Observations. 



Abstract of tlie Residís of the llourly Meteorological Observations 

 talcen at the Surveyor General* s Office, Calcutta, 

 in tlie month of March, 1860. 



MONTHLY EeSTTLTS. 



Mean height of the Barometer for the month, 



Max. height of the Barometer, occurred at 9 A. m. on the 12th, 



Min. height of the Barometer, occurred at 5 P. M. on the 31st, 



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 

 29.807 

 29.971 

 29.560 



0.411 

 29.888 

 29.737 



0.151 



Mean Dry Bulb Thermometer for the month, 

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

 Min. Temperature occurred at 6 & 7 A. M. on the lst, 

 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, 



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 forcé of vapour for the month, . . „ . 



o 

 82.6 

 100.4 

 64.8 

 35.6 

 93.1 

 74.6 

 18.5 



o 



73.8 



8.8 



69.4 



13.2 



Inches 



0.713 



Troy grains 

 Mean weight of vapour for the month, . . . . . . 7.66 



Additional weight of vapour required for complete saturation, . . 4.02 



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



Rained 1 day. — Max. fall of rain during 24 hours, 

 Total amount of rain during the month, 

 Prevailing direction of the Wind, 



Inches 

 Nil. 

 Nil. 



s. &s. w. 



