FOOTNOTES:
[67] Essays on Heredity, p. 104. Weismann's theory is clear, simple and convenient, but incomplete; for, unlike Darwin's theory of pangenesis, it scarcely attempts any real explanation of the extremely complex potentialities possessed by the reproductive elements. Perhaps we might retain Darwin's self-multiplying gemmules without supposing them to be thrown off by the cells, which will no longer be credited with two modes of multiplication. These minute germs or gemmules may have been evolved by natural selection playing upon the sample germs that achieve development; and they may exist either separately, or (preferably but perhaps not invariably) in aggregates to form Weismann's germ-plasm.
[68] Contemporary Review, Dec., 1875, p. 88.
[69] Variation of Animals and Plants under Domestication, ii. 286.
[70] Variation of Animals and Plants under Domestication, ii. 388, 398, 367; Life and Letters, iii. 44.
[71] Contemporary Review, Dec., 1875, pp. 94, 95.