Meteorological Observations. Iv 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of July 1867. 



Monthly Results. 



Inches. 



Mean height of the Barometer for the month... ... ... 29.557 



Max. height of the Barometer occurred at 9 a. m. on the 6th ... 29.748 



Min. height of the Barometer occurred at 4 p.m. on the 21st ... 29.314 



Extreme range of the Barometer during the month ... ... 0.434 



Mean of the daily Max. Pressures ... ... ... ...29.607 



Ditto ditto Min. ditto ... ... ... ... 29.494 



Mean daily range of the Barometer during the month ... ... 0.113 



Mean Dry Bulb Thermometer for the month ... 83.7 



Max. Temperature occurred at 2 p. m. on the 15th 93.7 



Min. Temperature occurred at 2 p. m. on the 3rd 74.8 



Extreme range of the Temperature during the month ... ... ]8.9 



Mean of the daily Max. Temperature ... ... 88.6 



Ditto ditto Min. ditto, ... ... 80.3 



Mean daily range of the Temperature during the month.... ... 8.3 



Mean Wet Bulb Thermometer for the month ... ... ... 80.7 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 3.0 



Computed Mean Dew-point for the month ... ... ... 78.6 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 5.1 



Inches. 

 Mean Elastic force of Vapour for the month ... ... ... 0.958 



Troy grain. 



Mean Weight of Vapour for the month ... ... ... 10.28 



Additional Weight of Vapour required for complete saturation ... 1.79 

 Mean degree of humidity for the month, complete saturation being unity 0.85 



Inches. 



Rained 26 days, — Max. fall of rain during 24 hours ... ... 3.98 



Total amount of rain during the month ... ... ... 15.44 



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

 meter during the month ... ... ... ... ... 13.54 



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



