Darwin

by Gamaliel Bradford

[73] To Wallace, December 22, 1857, Life, vol. I, p. 465.

[74] Journal, March 23, 1853, vol. V, p. 45.

[75] Gray to Canby, July 14, 1874, Gray, Letters, vol. II, p. 649.

[76] Gray to Darwin, July 21, 1863, Gray, Letters, vol. II, p. 509.

[77] Life, vol. I, p. 79.

[78] To Fox, March 24, 1859, Life, vol. I, p. 506.

[79] Life, vol. I, p. 83.

[80] To Hooker, February, 1846, More Letters, vol. I, p. 56.

[81] To Wallace, February 26, 1867, Life, vol. II, p. 276.

[82] Grammar of Science, p. 38.