[218] Descent of Man, pp. 41-43; also pp. 13-15.
[219] Man's Place in Nature, p. 64.
[220] Man's Place in Nature, p. 67. See Figs. of Embryos of Man and Dog in Darwin's Descent of Man, p. 10.
[221] The Descent of Man, pp. 7, 8.
[222] Man and Apes. By St. George Mivart, F.R.S., 1873. It is an interesting fact (for which I am indebted to Mr. E.B. Poulton) that the human embryo possesses the extra rib and wrist-bone referred to above in (2) and (4) as occurring in some of the apes.
[223] Man and Apes, pp. 138, 144.
[224] For a sketch of the evidence of Man's Antiquity in America, see The Nineteenth Century for November 1887.
[225] This subject was first discussed in an article in the Anthropological Review, May 1864, and republished in my Contributions to Natural Selection, chap, ix, in 1870.
[226] Man's Place in Nature, p. 102.
[227] For a full discussion of this question, see the author's Geographical Distribution of Animals, vol. i. p. 285.