THE 



SOUTH AFRICAN JOURJ^^V^^ 



OF SCIENCE : 5(f,r^Ag 



'0\ 



'^ \ -^f*-^ ''«.• ' "^ 



BEING THE ORGAN OF THE \^ ^S*""^ \^ 



SOUTH AFRICAN ASSOCIATION 



FOR THE 



ADVANCEMENT OF SCIENCE. 



Issued Monthly. 



VOL. VI. MARCH, 1910. No. 5 



CAPE TOWN: 



PUBLISHED BY THE ASSOCIATION. 



1910 [Price 2s. 



