See, e.g., Shattock and Seligmann, "The Acquirement of Secondary Sexual Characters," Proceedings of the Royal Society, vol. lxxiii, 1904, p. 49.

[8]

For facts bearing on this point, see Guinard, art. "Castration," Richet's Dictionnaire de Physiologie. The general results of castration are summarized by Robert Müller in ch. vii of his Sexualbiologie; also by F. H. A. Marshall, The Physiology of Reproduction, ch, ix; see also E. Pittard, "Les Skoptzy," L'Anthropologie, 1903, p. 463.

[9]

For an ancient discussion of this point, see Schurig, Spermatologia, 1720, cap. ix.

[10]

J. J. Matignon, Superstition, Crime, et Misère en Chine, "Les Eunuques du Palais Impérial de Pékin," 1901.