Meteorological Ohservalions, 



Vll 



Abstract of the Results of the Ilourlij Meteorological Observations 



taken at the Surveyor General's Office, Calcutta^ 



in the month of Jannari/ 1874. 



Monthly IIesults. 



Menu lieiglifc of tlie Barometer for tlie moiitli 



Max. lieiglit of tlie IJaroiiieter occurred at 10 a. m. on tlie 19th 



Mill, height of the Barometer occurred at 4 p. m. oil the 30th 



lixtreme range of the Barometer during the mouth 



Mean of the daily jMax. Pressures 



Ditto ditto Min. ditto 

 Mean dailg range of the Barometer during the mouth 



Inches. 



, 30.04.7 



, 30.249 



, 29.83G 



, 0.413 



, 30.124 



, 29.083 



. 0.141 



Mean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 3 r. M. on the 12th... 

 Min. Temperature occurred at 7 a. m. on the 9th 

 Jjlxtreme range of the Temperature during the month 

 Mean of the daily INlax. Temperature 



Ditto ditto Min. ditto, 

 Mean daily range of the Temperature during the month 



o 



66.4 

 84.5 

 51.4 

 33.1 

 76.5 

 58.1 

 18.4 



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 Yapour for the month 



. 60.7 



5.7 



. 56.1 



. 10.3 



Inches. 

 . 0.459 



Troy grain. 

 Mean Weight of Taponr for the month ... ... ... 5.10 



Additional Weight of Vapour required for complete saturation ... 2.07 

 Mean degree of humidity for the month, complete saturation being unity 0.71 



Mean Max. Solar radiation Thermometer for the month 



o 

 130.1 



Bained 3 days, — Max. fall of rain during 24 hours 

 Total amount of rain during the month 



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

 meter during the month 

 Prevailing direction of the Wind ,,, ... I^. E. & S. 



Inches. 

 , 0.49 

 , 0.94 



0.82 



W 



Hciijht 70 feet 10 iucli3.3 abjve sri 



I. 



