10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO5 



These corrections have been arrived at by considering the 

 records of two stations in the immediate vicinity of the old 

 observatory site (H = 262 ft.) and the records of the Point 

 Signal Station for an identical period of 25 years. The initial 

 percentage corrections were smoothed. 



JOHANNESBURG 



Authority. 



Meteorological Office, Department of Irrigation, Pretoria, Union 

 of South Africa. 

 Pressure. 



Site: The observations were made at the. Union Observatory; 

 the height of the barometer cistern was 5,925 ft. above mean 

 sea level throughout the period. 

 Hours: Observations were made at 6^^ G.M.T. throughout the 



period. 

 Notes: All values are comparable with those in former volumes 

 of World Weather Records. 

 Temperature. 



Site: As for pressure. The thermometers are housed in a Steven- 

 son screen, 4 ft. above the ground. 

 Hours: The maximum and minimum thermometers were read at 

 ei** G.M.T. 

 Precipitation. 



Site: The rain gage is situated in Joubert Park, 5,750 ft. above 

 mean sea level. The rim of the gage is 4 ft. above the ground. 



KIMBERLEY 



Authority. 



Meteorological Office, Department of Irrigation, Pretoria, Union 

 of South Africa. 



Pressure. 



Site: From June 1928 to 1940, Meteorological Observatory, 

 Hull Street, Kimberley, Lat. 28° 44' S., Long. 24° 46' E., 

 Hb= 3,996 ft. above mean sea level. Before June 1928, at 

 Kenilworth Observatory, Lat. 28° 42' S., Long. 24" 4/ E., 

 Hb= 3.944 ft. above mean sea level. The values have been 

 reduced to the height of 3,944 ft. in order to be compara- 

 ble with tlie data in previous volumes of World Weather 

 Records. 



