[2] Prince: The Unconscious, New York, 1914, p. 456.
[3] Hertz: Constipation and Allied Intestinal Disorders, London, 1909, p. 81.
[4] v. Trenck: Merkwürdige Lebensgeschichte, Berlin, 1787, p. 195.
[5] James, Loc. cit., p. 415.
[6] McDougall: Introduction to Social Psychology, London, 1908, p. 72.
[7] Darwin: Loc. cit., p. 76.
[8] Müller: Deutsches Archiv für klinische Medicin, 1907, lxxxix, p. 434.
[9] Burton: The Anatomy of Melancholy (first published in 1621), London, 1886, p. 443.
[10] Sherrington: Proceedings of the Royal Society, 1900, lxvi, p. 397.
[11] Goltz: Archiv für die gesammte Physiologie, 1892, li, p. 577.