Meteorological Obserratoni. o 



Abstract of the It emit* of the Hourly Meteorological Observation* 



taken at the Surveyor General'. % Office, Calentfa > 



in the month of December 1868. 



Monthly Results. 



Inches, 



Mean height of the Barometer for the month... ... ... 30.052 



Max. height of the Barometer occurred at 10 a. u. on the 16th. ... 30.20(> 



Min. height of the Barometer occurred a 1 3 p.m. on the 12th. ... 29.891 



Extreme range <>(' the Barometer during (ho mouth ... ... 0.315 



Mean of the daily Max. Pressures ..'. ... ... ...30.127 



Ditto ditto * Min. ditto ... ... ... ... 29.993 



Mean daity range of the Barometer daring the month ... ... 0,134 



Mean Dry Bulb Thermometer for the month 

 Max. Temperature occurred at 2 r. u. on the 13th. 

 Min. Temperature occurred at 7 a. if. on the 24th ... 

 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. 



f>8.7 

 81.0 

 56.0 

 25.0 

 77.1 

 61 .(> 

 15.5 



Mean Wet Bulb Thermometer for the month ... 



Mean Drjr 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 Tapour for the month 



62.1 



6.6 

 56.8 

 11.9 



Inches. 

 . 0.470 



Troy grain. 



Mean Weight of Vapour for the month ... ... ... 5.18 



Additional Weight of Tapour required for complete saturation ... 2.41 

 Mean degree of humidity for the month, complete saturation being unity 0.67 



Mean Max. Solar radiationTemperature for the month. 



o» 

 ... 117.0 



Inches. 



Rained no day, — Max. fall of rain during 24 hours ... ... ^j* 



Total amount of rain during the month ... ••• -•• ~^' 1 ^ 

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

 meter dur in £ the month ... ... ... ... ••• £^ 



Prevailing direction of the Wind... 



~N. JST. W., S. W. & N. 



