

ni-: 



SOUTH AFRICAN JOURNAl 

 OF SCIENCE: 



COMPRISING THE Rl-PORT OF THE 



SOUTH AFRICAN ASSOCIATION 



FOR THR 



ADVANCEMENT OF SCIENCE, 



19 16. 

 MARITZBURG. 



Issufd Mo)ithl\ 



VuL. XI il. NOVEMBER. 1916. NO. 4 



CAPE TOWN. 



PUBLISHED BY THE ASSOCIATION. 



1916, [Prifie as 



