[34] Ibid.
[35] Life, vol. I, p. 125.
[36] Life, vol. II, p. 453.
[37] Cirripedia, p. 155.
[38] To Lyell, September 12, 1860, Life, vol. II, p. 133.
[39] Darwiniana, p. 275.
[40] To Hooker, February 4, 1861, Life, vol. II, p. 153.
[41] To Lyell, March 9, 1850, More Letters, vol. II, p. 229.
[42] Life, vol. I, p. 125.
[43] Life, vol. I, p. 105.