Darwinism: an exposition of the theory of natural selection (1905)
Macmillan and co. · leaf 461
426 DARWINISM CHAT. 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. … Pia, 34,—Transfermation of Artemia salina te A. Milhansenil ; 1, tail-lobe of A, salina, aud its transition through 2, 3, 4, 5, to 6, into that of A. Milhausenii,; i, pastabdomen of A. salina; 5, postobdemen of n form bred in brackish ‘valer: 0, gillof A. Milhausenii; 10, gill of A. salina. (From…
Darwin’s theory · Variability of species · Natural selection · Colour perception · Mimicry · Evolution
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