[216] Pages 50, 51.

[217] 'Origin of Species,' p. 395, ed. 1876.

[218] 'Phil. Zool.,' tom. i. p. 61.

[219] 'Phil. Zool.,' tom. i. p. 62.

[220] Page 63.

[221] Page 64.

[222] Page 65.

[223] Page 67.

[224] Chap. iii.

[225] 'Phil. Zool.,' tom. i. p. 72.