section III.. [145] to Hooker, December 10, 1866, _life_, Vol. Ii, P. 239.

To Hooker, December 10, 1866, Life, vol. II, p. 239.

To Hooker, May 2, 1857, Life, vol. I, p. 454.

Darwiniana, p. 246.

To De Candolle, January 14, 1863, More Letters, vol. I, p. 234.

To Hooker, April 1, 1864, More Letters, vol. II, p. 330.

To Hooker, April, 1857, Life, vol. I, p. 450.

To Hooker, March 7, 1855, Life, vol. I, p. 405.

To Hooker, July 30, 1856, Life, vol. I, p. 439.

To Huxley, January 10, 1863, More Letters, vol. I, p. 231.