8vo. Pages 262-280. [Entire volume: viii, 548 pp.] 2 diagrams, tables. Original blind-stamped navy cloth, gilt spine; re-backed, new end-leaves. Ex library copy, paper spine label removed. Fine. FIRST EDITION. Francis Galton was influenced by Darwin's belief that inheritance is conditioned by a blending mechanism. Galton propounded his law of ancestral heredity, which set the average contribution of each parent at 1/4, of each grandparent at 1/16, and so forth. Pearson and his colleagues pursued the notion in a series of sophisticated researches, but Galton's law received withering criticisms after the rediscovery, in 1900, of Mendel's work on particulate inheritance. Here Pearson proposes a variability criterion between contending theories of inheritance. See: DSB, X, pp. 447-473.

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"On a criterion which may serve to test various theories of inheritance." In: Proceedings of the Royal Society of London, Vol. LXXIII.

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Harrison and Sons, 1904., London:

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1904

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1� Edici�n

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Jeff Weber Rare Books, established in 1986, relocated from California to Montreux, Switzerland in 2020. I specialize in the history of science, history of medicine, early printed books, fine printing, bibliography, Persia, fore-edge painting, scholarly books. I buy collections and do regular appraisal work.

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