Meteorological Observations. 



ixm 



Abstract of the Results of the Hourly Meteorological Observations 

 taken at the Surveyor General's Office, Calcutta, in the 

 mouth of August 186G. 



Monthly Results. 



Mean height of the Barometer for the month,... 



Max. height of the Barometer occurred at 10 a. m. on the 30th, 



Min. height of the Barometer occurred at 4 p. m. on the 7th, 



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, ... 



Indies. 



29.584 

 29.822 

 29.332 



0.490 

 29.(542 

 29.519 



0.123 



Mean Dry Bulb Thermometer for the month, 

 Max. Temperature oceurred at 5 P. M. on tlte 31st, 

 Min. Temperature occurred at 5 a. m. on the 28th, 

 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, 



82.9 

 91.8 



77.4 

 14.4 



87.6 



79.9 



7.7 



Mean Wet Bulb Thermometer for the month, ... ... ... 80.2 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer, 2.7 



Computed Mean Dew-point for the month, ... ... ... 78. & 



Mean Dry Bulb Thermometer above computed mean Dew-point. . . . 4.6 



Inches. 

 Mean Elastic force of Vapour for the month, ... ... ... 0.949 



Troy grain. 



Mean Weight of Vapour for the month ... ... ... 10.18 



Additional Weight of Vapour required for complete saturation, ... 1.61 

 Mean degree of humidity for the month, complete saturation being unity 0.86 



Inches. 



Rained 27 days, — Max. fall of rain during 24 hours ... ... 3.14 



Total amount of rain during the month, ... ... ... 11.48 



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

 meter during the month. ... ... ... ... ... 10.67 



Prevailing direction of the Wind, ... S. S. E. E. S. E. & S. by E. 



