[212] Origin, p. 162.
[213] To Hooker, July 5, 1856, More Letters, vol. I, p. 93.
[214] To Miller, June 5, 1859, More Letters, vol. I, p. 122.
[215] To Hooker, June 30, 1862, Life, II, p. 445.
[216] To Wallace, July 12, 1871, Life, vol. II, p. 325.
[217] To Hooker, June 15, 1881, More Letters, vol. II, p. 433.
[218] To Falconer, October 1, 1862, More Letters, vol. I, p. 209.
[219] To Lyell, September 26, 1860, More Letters, vol. I, p. 167.
[220] To Hooker, January 16, 1869, More Letters, vol. II, p. 379.
[221] Evolution and Adaptation, p. 231.