2. Franz Boas, “The Growth of Indian Mythologies” (Journal of American Folk-Lore, vol. ix [1896], pp. 1-11).

3. J. Mooney, “The Ghost-Dance Religion” (Fourteenth Annual Report of the Bureau of Ethnology, pp. 641 et seq.).

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2. Rudolf Lehmann, Schopenhauer.

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G. Tarde, Les Lois de l’Imitation.

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Francis Galton, Natural Inheritance; Hereditary Genius. Karl Pearson, Biometrika.

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