[647] 'Die Bastardbefruchtung,' s. 56.
[648] 'Bastarderzeugung,' s. 423.
[649] 'Dritte Fortsetzung,' &c., 1766, s. 85.
[650] 'Die Bastardbefruchtung,' &c., 1865, s. 92; see also the Rev. M. J. Berkeley on the same subject, in 'Journal of Royal Hort. Soc.,' 1866, p. 80.
[651] Dr. P. Lucas has given a history of opinion on this subject: 'Héréd. Nat.,' 1847, tom. i. p. 175.
[652] 'Hist. des Anomalies,' tom. iii. p. 499.
[653] Idem., tom. iii. pp. 392, 502.
[654] See his interesting work, 'Métamorphoses de l'Homme,' &c., 1862, p. 129.
[655] 'Dritte Fortsetzung,' &c., s. 123; 'Bastarderzeugung,' s. 249.
[656] 'Gardener's Chronicle,' 1853, p. 183.