Meteorological Observations. vii 



Abstract of the Results of the Hourly Meteorological Obserruliovs 

 taken at the Surveyor General's Office, Calcutta, 

 in the month of January 1876. 



Monthly Eesults. 



Iiu-lies. 



Mean heififlit of tlie Barometer for the month ... ... ... 29.965 



Max.lieia^litof the Barometer occurred at 10 A.M. on the 15th ... 30.174 



Min. lieiglit of tlie Barometer occurred at 5 p. m. on the 23r(l ... 29.768 



Extreme range of the Barometer during the month. ... ... 0.4] 1 



Mean of tlie daily Max. Pressures ... ... ... ... 30.044 



Ditto ditto Min. ditto ... ... ... ... 29.904 



Mean daily range o^ the Barometer during tlie month ... ... 0.140 



Mean Dry Bulb Thermometer for the month ... ... ..', 67.8 



Max. Temperature occurred at 3 p. M. on the 24th ... ... 82.3 



Min. Temperature occurred at 7 A. M. on the 14th ... ... ... 54.5 



Extreme range oi the Temperature during the month ... ... 27.8 



Mean of the" daily Max. Temperature ... ... ... ... 78.0 



Ditto ditto Min. ditto, ... ... ... ... 59.6 



Mean daily range o1 the Temperature during the montli ... ... 18.4 



Mean Wet Btilb Thermometer for the month ... ... ... 60.6 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 7.2 



Computed Mean Dew-point for the month ... ... ... 54.8 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 13.0 



Inches. 

 Mean Elastic force of Vapour for the month ... ... ... 0.440 



Troy grain. 

 Mean Weight of Vapour for the month ... ... ... 4.85 



Additional Weight of Vapour required for complete saturation ... 2.63 

 Mean degree of humidity for the month, complete satui'ation being unity 0.65 



o 

 Moan Max. Solar radiation Thermometer for the month ... ... 131.9 



Inches. 

 Bained no days.^Max. fall of rain during 24 hours ... ... Nil 



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



Total amount of rain indicated by the Gauge* attached to the anemo- 

 meter during the month ... ... ... ... ... Nil 



Prevailing direction of tlie Wind ... S. S. W. & S. W. 



* Height 70 feet 10 incbos above ground, 



