Initiative in Evolution


FOR more than twenty years Dr. Walter Kidd has interested himself in the arrangement of the mammalian hair, and pondered over its significance, especially in relation to theories of evolution. He has shown that definite patterns due to the diverse lie of the hair are of common occurrence, that they are subject to change, and that they are hypothetically interpretable on Neo-Lamarckian lines. Whether one agrees with his interpretations or not, one must thank him for a very enjoyable book, written with whimsical humour and with a delightful urbanity in controversy. One admires also the candour with which Dr. Kidd states and seeks to dispose of some serious criticisms brought against his position as expressed in previous books.

Initiative in Evolution.

By Dr. W. Kidd. Pp. x + 262. (London: H. F. and G. Witherby, 1920.) 15s. net.

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T., J. Initiative in Evolution . Nature 107, 419–421 (1921).

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