THE 



SOUTH AFRICAN JOURNAL 

 OF SCIENCE: 



BEING THE ORGAN OF THE 



SOUTH AFRICAN ASSOCIATION 



FOR THE 



ADVANCEMENT OF SCIENCE, 



— 5>s 



igii. 3>%' 



BULAWAYO. 



Issued Monthlx. ^'-— ,-..- 



VOL. VIII. SEPTEMBER, 1911. NO. 2. 



CAPE TOWN. 



PUBLISHED BY THE ASSOCIATION 



191 1 [Price 2& 



