lO SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 79 



Table B. — Corrections Applied to the Temperature Values to Reduce to 

 J (9'' + 2i^<- + Max. + Min.). °F. 



Jan. Feb. Mar. Apr. May .Juno July -\u!?. Sept. Oct. Nov. Dec. 

 iCgi" + 21*') +0.1 +0.1 +0.1 +0.1 +0.1 +0.3 +0.5 +0.4 +0.3 +0.1 0.0 0.0 

 i(9*'+15'') —1.5 —1.6 —1.8 —2.1 



CAPE TOWN, SOUTH AFRICA 

 Authority. 



Meteorological Office, Department of Irrigation, Pretoria, Union 

 of South Africa. 

 Pressure. 



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



was 40 ft. throughout the period (1841 to 1924). 

 Hours: All values have been corrected to the mean of 24 hours. 

 Notes: All values have been corrected for Index Error and to 

 normal gravity (Lat. 45°) and Mean Sea Level. 

 Temperature. 



Site: As for Pressure. 



Hours: The standard adopted is the mean between the mean 

 daily maximum and the mean daily minimum. 

 Precipitation. 



Site: As for Pressure. 



DAR-ES-SALAAM, EAST AFRICA 



Lat. 6° 29' S. Long. 39° 18' E. 

 Pressure. 



Autliorllies: 1895 October to 1902 December. Hamburg, Deutsch 

 Ubersee. Meteor. Beobachtungen, Heft 11-14. 

 T903 January to 191 1 December. Heidke, P., Meteor. Beo- 

 bachtungen aus Deutsch-Ostafrika, Teil 3-8, repr. from 

 Mitt. d. D. Schutzgebieten, vol. 21-26. 



Site: 1895 October to 1898 December. In a house on the large 

 harbor. On December 31, 1898 the barometer was 

 moved to a new site 130 m. from the shore at the same 

 level. The height was determined as 7.6 m. from the 

 records of a self-registering Seibt-Fuess level in 1902. 

 The height is 9.62 m. above Dar-es-Salaam zero, which 

 lies 1.97 m. below Dar-es-Salaam mean water. 



Cli(iii(ji\s- of Instrument: I'rom December 1895 to December 

 1900 a Bonesch barograph was in use, and a Fuess 

 barograph subsequently. The barograms are controlled 

 by eye readings of a mercury barometer at 7^, I4'\ 



