Meteorological Observatons. xlviis 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calcutta, 



in the month of June 1869. 



Monthly Kesults. 



Indies. 



Mean hci ght of the Barometer for the month .. . ... ... 29.516 



Max. height of the Barometer occurred at 10 a. m. on the 1st. ... 29.729 



Min. height of the Barometer occurred at 11 a. m. on the Oth. ... 28.713 



Extreme range of the Barometer during the month ... ... 1.016 



Mean of the daily Max. Pressures ... ... ... ... 29.581 



Ditto ditto Min. ditto ... ... ... ... 29.441 



Mean daily range of the Barometer during the month ... ... 0.140 



Mean Dry Bulh Thermometer for the month ... 86.3 



Max. Temperature occurred at 3 &4 p. m. on the 5th 98.0 



Min. Temperature occurred at 10 & 11 a. m, on the 9th. & 28th. 77.5 



Extreme range of the Temperature during the month ... ... 20.5 



Mean of the daily Max. Temperature .. . ... 91.9 



Ditto ditto Min. ditto, ... ... 82.2 



Mean daily range of the Temperature during the month .. . ... 9.7 



Mean Wet Bulh Thermometer for the month ... ... ... 81.9 



Mean Dry Bulb Thermometer above Mean Wet Bulb Thermometer 4.4 



Computed Mean Dew-point for the month ... ... ... 78.8 



Mean Dry Bulb Thermometer above computed mean Dew-point ... 7.5 



Inches. 

 Mean Elastic force of Vapour for the month ... ... ... 0.964 



Troy grain. 



Mean Weight of Vapour for the month ... ... ... 10.27 



Additional Weight of Vapour required for complete saturation ... 2.75 

 Mean degree of humidity for the month, complete saturation being unity 0.79 



o 



Mean Max. Solar radiation Thermometer for 6 days (broken) ... 134.2 



Inches. 



Rained 14 days, — Max. fall of rain during 24 hours ... ... 10.99 



Total amount of rain during the month ... ... ... 18.38 



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

 meter during the month ... ... ... ... ... 13.89 



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



