[64] Isid. Geoffroy Saint-Hilaire, ‘Hist. des Anomalies,’ tom. i., 1832, pp. 435, 657; and tom. ii., p. 560.
[65] Virchow, ‘Cellular Pathology,’ 1860, p. 66.
[66] Müller’s ‘Phys.,’ Eng. Translat., vol. i., 1833, p. 407. A case of this kind has lately been communicated to me.
[67] Dr. Fürbringer, ‘Die Knochen etc. bei den schlangenähnlichen Sauriern,’ as reviewed in ‘Journal of Anat. and Phys.,’ May 1870, p. 286.
[68] Moquin-Tandon, ‘Tératologie Vég.,’ 1841, pp. 218, 220, 353. For the case of the pea, see ‘Gardener’s Chronicle,’ 1866, p. 897. With respect to pollen within ovules, see Dr. Masters in ‘Science Review,’ Oct. 1873, p. 369. The Rev. J. M. Berkeley describes a bud developed on a petal of a Clarkia, in ‘Gardener’s Chronicle,’ April 28th, 1866.
[69] See some remarks to this effect by Sir H. Holland in his ‘Medical Notes,’ 1839, p. 32.
[70] This is the view taken by Prof. Haeckel, in his ‘Generelle Morphologie’ (B. ii. s. 171), who says: “Lediglich die partielle Identität der specifisch constituirten Materie im elterlichen und im kindlichen Organismus, die Theilung dieser Materie bei der Fortpflanzung, ist die Ursache der Erblichkeit.”
[71] In these remarks I, in fact, follow Naudin, who speaks of the elements or essences of the two species which are crossed. See his excellent memoir in the ‘Nouvelles Archives du Muséum,’ tom. i., p. 151.
CHAPTER XXVIII.
CONCLUDING REMARKS.
DOMESTICATION—NATURE AND CAUSES OF VARIABILITY—SELECTION—DIVERGENCE AND DISTINCTNESS OF CHARACTER—EXTINCTION OF RACES—CIRCUMSTANCES FAVOURABLE TO SELECTION BY MAN—ANTIQUITY OF CERTAIN RACES—THE QUESTION WHETHER EACH PARTICULAR VARIATION HAS BEEN SPECIALLY PREORDAINED.