Meteorological Observations. w\\ 



Abstract of I lie Results of (lie Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the mouth of April 1873. 



Monthly Kksui.ts. 



Mean height of Hie Barometer for Llie month 

 Max. Iieigiit of the Barometer occurred at 8 a. m. oii tlie 19th 

 Blin. height of the Barometer occurred at 5 & ii p. si. ou the 12th 

 Extreme range of the Barometer during the month 

 Mean of the daily Max. Pressures 

 Ditto ditto IM in. ditto 

 JUean daily range of the Barometer during the month 



Inches. 



29.738 



29.974 



29.494 



0.480 



29.809 



29. 658 



0.151 



Menu Dry Bulb Thermometer for the month 

 Max. Temperature occurred at I >>. m. on the 12th 

 Min. Temperature occurred at 5 & 6 a. m, on the 21st 

 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 



o 

 84.2 

 103.5 

 71.0 

 32.5 

 93.8 

 77.3 

 10.5 



Mean Wet Bull) 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 Vapour for the month 



. 78.1 

 0.1 



73.8 

 . 10.4 



Inches. 

 . 0.822 



Troy grain. 

 Mean Weight of Vapour for the month ... ... ... 8.80 



Additional Weight of Vapour required for complete saturation ... 3.44 

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



Mean Max. Solar radiation Thermometer for the month 



o 

 138.3 



Inches. 

 Eained 8 days. — Max. fall of rain during 24 hours ... ... 1.02 



Total amount of rain during the month ... ... ... 1.84 



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

 meter during the month ... ... ... ifi ... 1.58 



Prevailing direction of the Wind ,., ... S. S. W & S. 



* Height 70 feet 10 inches above ground, 



