[255] 'Origin of Species,' pp. 265, 266.
[256] 'Phil. Zool.,' tom. i. p. 121.
[257] 'Phil. Zool.,' tom. i. p. 122.
[258] 'Origin of Species,' pp. 122, 123.
[259] 'Phil. Zool.,' tom. i. p. 123.
[260] 'Phil. Zool.,' tom. i. p. 123.
[261] 'Origin of Species,' chap. xiv.
[262] 'Phil. Zool.,' tom. i. p. 123.
[263] 'Phil. Zool.,' tom. i. p. 140.
[264] Page 142.