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Updated: May 19, 2025
He does not indeed put his faith prominently forward and pin himself to it as plainly as could be wished, but under the heading, "The Non-Heredity of Acquired Characters," he writes as follows on p. 440 of his recent work in reference to Professor Weismann's Theory of Heredity:
Weismann's explanation of this change of germ-plasm into somatoplasm is very ingenious, and depends upon his theory of the structure of the germ-plasm; and this latter theory forms the basis of his theory of evolution. It would take too long to state his theory of the structure of germ-plasm, but an illustration may present fairly clear all that is of special importance to us.
At first, for many reasons, Weismann's theories did not meet with general acceptance, but during recent years there has been a marked return to many of his positions, mainly as the result of further cytological discoveries, and of the formulation of Mendel's Law and of De Vries's mutation theory.
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