Meteorological Ol/servations. 



XXXI 



Ah:str,tct of the Results of the lloiirli/ Meleorological Obsercalions 

 taken at the. S/irvej/or (j'e//dnil'.i Office, Calcutta 

 in the month of April 1874. 



^Monthly JiKSLiMs. 



Indies. 



Mean Iiei^lit of tlie Barometer for tlie nioiitli ... ... ,,, 29 7()8 



Max. height of tlie Barometer occurred at 9 A. m. on the 7t]i ... 29.940 



Min. heigiit of the Barometer occurred at 5 p. m. on the 22nd ... 29 ()09 



F.xti'tme range of tlie Barometer during the month ... ... 0.831 



Mean of the daily Max. Pressures ... ... ... ... 29.842 



l)itto ditto Min. ditto ... ... ... ... 29.(^92 



Mean daili/ range oi the Barometer during the month ... ... 0.150 



o 



Mean Dry Bulb Thermometer for the month ... ... ... 85.1 



Max. Temperature occiirred at 4 y. m. on the 12th ... ... 103.5 



Min. Temperature occurred at 5 & 6 a. m. on the 28th ... ... 70.5 



Mlxtrenie range o^ the Temperature during the month ... ... 33.0 



Mean of the daily Max. Temperature ... ... ... ... 95.0 



Ditto ditto Min. ditto, ... ... ... ... 77.9 



Mean daily range of the Temperature during the month ,., ... 17.1 



Mean Wet Bulb Thermometer for the month ... ... ... 78.6 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer (5.5 



Computed Mean Dew-point for the month ... ... ... 74.0 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 11.1 



Indies. 

 Mean Elastic force of Vapour for the mouth ,,, ,., ... 0.827 



Troy grain. 

 Mean Weight of Vapour for the montli ... ... ... 8.84 



Additional Weight of Vapour required for complete saturation ... 8.73 

 Mean degree of humidity for the month, complete saturation being unity 0. 70 



o 

 Mean Max. Solar radiation Thermometer for the month ... ... 145.0 



Inches. 



Rained 5 days, — Max. fall of rain during 24 hours ... ... 0.81 



Total amount of rain during the month ... ... ••• 1-20 



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

 meter during the month 



Prevailing direction of the Wind ... ... S. & S. S. AV. 



* Height 70 feet 10 iaches above ground. 



0.-99 



