i0 smithsonian miscellaneous collections vol. qo 



Pressure. 



Site: At Gordon College throughout the period. 

 Instruments: Fuess Portable barometer 1630, index error cor- 

 rection applied, +0.36 mm. 

 Temperature. 



Site: As for Pressure. 



Hours: The values are from dry-bulb observations at 8 h , I4 h , 

 and 2o'\ and the minimum thermometer readings, calculated 

 according to the following formula: 

 i(8 h +i4 h + 20 h + Min.) 

 and reduced to the true means of 24 hours by applying the 

 following corrections based on five years' thermograph 

 records at Gordon College : 



Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 

 "C. +1.3 +1.1 +1.2 +1.1 +1.0 +1.1 +0.7 +0.9 +0.8 +0.9 +1.0 +1.2 



KIMBERLEY, SOUTH AFRICA 



Authority. 



1921-1928 June. Dr. J. R. Sutton, Kenilworth Observatory, 



Kimberley. 

 1928 July-1930. H. G. Harris, Meteorological Observatory, 

 Hull Street, Kimberley. 

 Pressure. 



Site: 1 92 1 -1928 June. Kenilworth Observatory. The height of 



the barometer above Mean Sea Level was 3944 ft. 



Between June 25 and September 1, 1928, the instruments 



were transferred to a new site. 

 1928 September-1930. Observatory. Hull Street. The 

 height of the barometer above Mean Sea Level 

 was 3996 ft. 

 The observations have been reduced to a height of 3944 ft. 

 by the following correction : 



Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 

 In. +.047 +.048 +.048 +.049 +.049 +.049 +.049 +.049 +.049 +.048 +.048 +.048 



Instrument: A Newman standard barometer was in use through- 

 out. 



Hours: 192 1 -1928 June. The values are the means of observa- 

 tions at 8^ h , 14^ and 2o| h , 30th meridian time. 

 1928 September- 1 929 March. Observations at &| h reduced 

 to i(8£ h + 14^ + 20^) by the following correction : 



Sept. Oct. Nov. Dec. Jan. Feb. Mar. 



In. —.049 -.044 -.048 -.045 -.042 -.044 -.039 



