Féré, Sensation et Mouvement, Chapter XIV, "Sur la Psychologie du Fœtus."
J. Thomson, "Defective Co-ordination in Utero," British Medical Journal, September 6, 1902.
H. Campbell, Nervous Organization of Man and Woman, p. 206; cf. Moll, Untersuchungen über die Libido Sexualis, bd. i, p. 264. Many authorities, from Soranus of Ephesus onward, consider, however, that sexual relations should cease during pregnancy, and certainly during the later months. Cf. Brénot, De l'influence de la copulation pendant la grosseisse, 1903.