[17] Ibid., p. 45.

[18] Ibid., Pp. 90-91.

[19] William Harvey, Opera omnia: a Collegio Medicorum Londinensi edita, Londini, 1766, p. 136.

[20] William Harvey, Anatomical Excercises on the Generation of Animals, trans. Robert Willis, London, 1847, p. 462.

[21] Ibid., pp. 336-339.

[22] Works of William Harvey, trans. Robert Willis, London, 1847, pp. lxx-lxxi.

[23] Harvey, op. cit., pp. 462-463.

[24] Ibid., p. 457.

[25] F. J. Cole, Early Theories of Sexual Generation, Oxford, 1930, p. 140.

[26] Thomas Browne, The Works, ed. Geoffrey Keynes, Chicago, 1964, I, 261-262.