WHOLE VOL. 



NOTES. AFRICA ^ ^ 



and 21'^ (Ilechelnianu station barometer, correction 

 + 0.3 mm. imtil December 31, 1909. Fuess station 

 barometer, correction +0.1 mm.) 

 flours: Mean of 24 hours throughout. 



TExMPERATURE. 



Authorities: As for Pressure. 



Site: As for Pressure. 



Instrument: A Fuess thermograph controlled l)y eye observations 



was in use throughout. 

 Hours: Mean of 24 hours throughout. 

 Precipitation. 



Authorities: As for Pressure. 

 Site: As for Pressure. 



DURl-.AN, SOUTH AFRICA 



Pressure. 



Authorities: 1884 to 1916. Dr. J- R- Sutton, Kcnilworth Ob- 

 servatory, Kimberley. 

 1917 to 1920. Manuscript data supplied l)y the Meteorologi- 

 cal Office, Department of Irrigation, Pretoria, and 

 filed in the Meteorological Office, London. 

 Site: The height of the barometer above Mean Sea Level was: 



1884 to 1912 May 262 ft. 



1912 June to 1920 • 50 ft. 



All values have been corrected to Mean Sea Level. 



Hours: The hour of observation is 8A'\ 30th meridian time, 



throughout the period. 

 Notes: All values have l)een corrected to normal gravity (Lat. 



45°) I'y applying a correction of -.039 in- 

 Te.mperature. 

 Authorities: 



1885 to 1916. Dr. J. R. Sutton. 



1917 to 1920. Meteorological Office, Department of Irri- 

 gation, Pretoria. 



Hours: The standard adopted is the mean between the mean 

 daily maximum and the mean daily minimum. 



Site: As for Pressure. In order to make the observations at the 

 two sites comparable, the following corrections 

 have been applied to the values from 1912 June 

 to 1920: 



.Ian. V,'U. Mar. Apr. May .Tn„.> .Tuly .\ii-. Sr,.(. Ort. -Nnv. ])cc. 

 •F. 40.6 +0.5 +0.5 +0.5 +0.7 +1.0 +1.1 +1.3 +1.3 +J.1 +1-0 +0.8 



