[109] "Natural Selection," p. 293.

[110] "Animals and Plants under Domestication," vol. i. pp. 289-295.

[111] "Origin of Species," 5th edition, 1869, p. 45.

[112] Ibid. p. 13.

[113] "Animals and Plants under Domestication," vol. i. p. 115.

[114] Ibid. vol. i. p. 114.

[115] Ibid. vol. i. p. 243.

[116] Ibid. vol. ii. p. 361.

[117] Ibid. vol. ii. p. 16.

[118] "Animals and Plants under Domestication," vol. ii. p. 57.

[119] This has been shown by my late friend, Mr. H. N. Turner, jun., in an
excellent paper by him in the "Proceedings of the Zoological Society for
1849," p. 147. The untimely death, through a dissecting wound, of this most
promising young naturalist, was a very great loss to zoological science.

[120] "Animals and Plants under Domestication," vol. ii. p. 189.

[121] "Origin of Species," 5th edition, 1839, p. 115.

[122] Ibid. p. 322.

[123] Ibid. p. 314.

[124] "Animals and Plants under Domestication," vol. ii. p. 104.

[125] _North British Review_, New Series, vol. vii., March 1867, p. 317.

[126] "Origin of Species," 5th edition, 1869, p. 212.

[127] See also the _Popular Science Review_ for July 1868.

[128] A bird with a keeled breast-bone, such as almost all existing birds
possess.

[129] "Anatomy of Vertebrates," vol. iii. p. 792.

[130] Ibid. p. 793.

[131] As a tadpole is the _larval form_ of a frog.

[132] As Professor Huxley, with his characteristic candour, fully admitted
in his lecture on the Dinosauria before referred to.

[133] "Transactions of the Geological Society of Glasgow," vol. iii.

[134] "Origin of Species," 5th edition, p. 354.

[135] See his address to the Geological Society, on February 19, 1869.

[136] See _Nature_, vol. i. p. 399, February 17, 1870.

[137] Ibid. vol. i. p. 454.

[138] "Habit and Intelligence," vol. i. p. 344.

[139] "Habit and Intelligence," vol. i. p. 345.

[140] "Origin of Species," 5th edition, p. 353.

[141] "Origin of Species," 5th edition, p. 381.

[142] "Origin of Species," 5th edition, 1869, p. 463.

[143] See his Catalogue of Acanthopterygian Fishes in the British Museum,
vol. iii. p. 540.

[144] Proc. Zool. Soc. 1867, p. 102, and Ann. Mag. of Nat. Hist. vol. xx.
p. 110.

[145] See Catalogue, vol. iii. p. 469.

[146] Ibid. vol. v. p. 311.

[147] Ibid. p. 345.

[148] Ibid. p. 13.

[149] Ibid. p. 21.

[150] See Catalogue, vol. v. p. 24.

[151] Ibid. p. 52.

[152] Ibid. p. 109.

[153] Ibid.