THE 



SOUTH AFRICAN JOURNAL 

 OF SCIENCE: 



COMPRISING THE REPORT OF THE 



SOUTH AFRICAN ASSOCIATION 



FOR THE 



ADVANCEMENT OF SCIENCE. 



=— << V- 



1916. -^' -Vs^^ 



MARITZBURG. 



Issued Monthly. 



VOL. XIll. JANUARY, 1917. NO. 6 



CAPE TOWN. 



PUBLISHED BY THE ASSOCIATION. 



1917. . [Price 2s, 



