f the fact of a resemblance which has struck so many observers,
reminds one of the French philosopher's estimate of facts hostile to his
theory--"Tant pis pour les faits!"

[47] Fifth Edition, p. 236.

[48] Mr. Smith, of the Entomological department of the British Museum, has
kindly informed me that the individuals intermediate in structure are very
few in number--not more than five per cent.--compared with the number of
distinctly differentiated individuals. Besides, in the Brazilian kinds
these intermediate forms are wanting.

[49] By accidental variations Mr. Darwin does not, of course, mean to imply
variations really due to "chance," but to utterly indeterminate
antecedents.

[50] "Origin of Species," 5th edition, p. 235.

[51] _I.e._ warm-blooded animals which suckle their young, such as apes,
bats, hoofed beasts, lions, dogs, bears, weasels, rats, squirrels,
armadillos, sloths, whales, porpoises, kangaroos, opossums, &c.

[52] "Journal of Anatomy and Physiology" (1868), vol. ii. p. 139.

[53] See "Ann. and Mag. of Nat. Hist." for August 1870, p. 140.

[54] See "Proceedings of the Royal Institution," vol. v. part iv. p. 278:
Report of a Lecture delivered February 7, 1868. Also "Quarterly Journal of
the Geological Society," February 1870: "Contributions to the Anatomy and
Taxonomy of the Dinosauria."

[55] "Proceedings of Geological Society," November 1869, p. 38.

[56] The archeopteryx of the oolite has the true carinate shoulder
structure.

[57] "Proceedings of the Royal Institution," vol. v. p. 279.

[58] This remark is made without prejudice to possible affinities in the
direction of the Ascidians,--an affinity which, if real, would be
irrelevant to the question here discussed.

[59] "Lectures on the Comp. Anat. of the Invertebrate Animals," 2nd edit.
1855, p. 619; and Todd's "Cyclopaedia of Anatomy," vol. i. p. 554.

[60] See "Habit and Intelligence," vol. i. p. 321.

[61] A view recently propounded by Kowalewsky.

[62] "Natural Selection," p. 167.

[63] "Natural Selection," p. 173.

[64] Ibid. p. 177.

[65] "Malay Archipelago," vol. i. p. 439.

[66] "Natural Selection," p. 177.

[67] "Origin of Species," 5th edition, p. 166.

[68] Vol. ii. p. 280.

[69] See "Natural Selection," p. 64.

[70] The italics are not Mr. Wallace's.

[71] "Malay Archipelago," vol. ii. p. 150; and "Natural Selection," p. 104.

[72] See "Malay Archipelago," vol. ii. chap. xxxviii.

[73] Loc. cit. p. 314