426 
DARWINISM 
CHAP. 
produced by some other power, then natural selection is not 
wanted. If, on the other hand, both fit and unfit are produced, 
and natural selection decides between them, that is pure Dar¬ 
winism, and Mr. Cope’s theories have added nothing to it. 
10 . 
A 5. 6. 
Fig. 35.—Transformation of Artemia salina to A. Milhausenii; 1, tail-lobe of A. salina, 
and its transition through 2, 3, 4, 5, to 6, into that of A. Milhausenii; 7, 
post-abdomen of A. salina; 8, post-abdomen of a form bred in brackish 
water; 9, gill of A. Milhausenii; 10, gill of A. salina. (From Sclimanke- 
witsch.) 
Semper on the Direct Influence of the Environment. 
Another eminent naturalist, Professor Karl Semper of 
Wurzburg, also adopts the view of the direct transforming 
power of the environment, and has brought together an 
