THE 



SOUTH AFRICAN JOURNAL 

 OF SCIENCE: 



BEING THE ORGAN OF THE 



SOUTH AFRICAN ASSOCIATION 



FOR THE 



ADVANCEMENT OF SCIENC%^ 





'■X-' 



Issued Monthly. .^X ju . .fe>/s.O" 



W^^^ 



VOL. VIII. OCTOBER, 1911. NO. 3. 



CAPE TOWN. 



PUBLISHED BY THE ASSOCIATION 



191 1 [Price 2s. 



