[162] To Lyell, March 12, 1863, Life, vol. II, p. 199.

[163] Marcus Herzog, introduction to Samuel Butler’s Unconscious Memory, p. XII.

[164] To Lyell, March 17, 1863, Life, vol. II, p. 201.

[165] More Letters, vol. I, p. 37.

[166] MS. Journals, in Life, vol. I, p. 363.

[167] To Horace Darwin, December 15, 1871, Family Letters, vol. II, p. 207.

[168] P. 426.

[169] June 18, 1858, Life, vol. I, p. 473.

[170] To Lyell, June 25, 1858, Life, vol. I, p. 474.

[171] Hooker to Francis Darwin, Life, vol. I, p. 482.