THE 



SOUTH AFRICAN JOURNAL 

 OF SCIENCE: / 



BEING THE ORGAN OF THE 



SOUTH AFRICAN ASSOCIATION 



FOR THE 



ADVANCEMENT OF SCIENCE. 



igii. 



BULAWAYO. 



,yZ^ ':. \ ^ 1 e "V 



Issued Monthly. 



It:- , 









'■..*■; 



VOL. Vill. AUGUST, 1911. NO. 1 



CAPE TOWN. 



PUBLISHED BY THE ASSOCIATION 

 igti 



[Price 2s 



