[43] ‘Die Bastardbefruchtung,’ etc., 1865, s. 24.
[44] ‘Bastarderzeugung,’ s. 452, 507.
[45] ‘Die Bastardbefruchtung,’ s. 56.
[46] ‘Bastarderzeugung,’ s. 423.
[47] ‘Dritte Fortsetzung,’ etc., 1766, s. 85.
[48] ‘Die Bastardbefruchtung,’ etc., 1865, s. 92: see also the Rev. M. J. Berkeley on the same subject, in ‘Journal of Royal Hort. Soc.,’ 1866, p. 80.
[49] Dr. P. Lucas has given a history of opinion on this subject: ‘Héréd. Nat.,’ 1847, tom. i. p. 175.
[50] ‘Hist. des Anomalies,’ tom. iii. p. 499.
[51] Ibid., tom. iii. pp. 392, 502. The several memoirs by M. Dareste hereafter referred to are of special value on this whole subject.
[52] See his interesting work, ‘Métamorphoses de l’Homme,’ etc., 1862, p. 129.