To Hooker, October 13, 1858, Life, vol. I, p. 495.
To Hooker, June 17, 1868, Life, vol. II, p. 273.
Life, vol. I, p. 81.
Life, vol. I, p. 81.
Life, vol. I, p. 30.
To Lyell, January 22, 1865, Life, vol. II, p. 216.
To Morley, March 24, 1871, More Letters, vol. I, p. 326.
Lull, p. 129.
To Hooker, December 21, 1859, Life, vol. II, p. 21.
To Hooker, September 27, 1865, Life, vol. II, p. 225.
To Henslow, May 18, 1832, Life, vol. I, p. 220.
Life, vol. II, p. 356.
To Herbert, June 2, 1833, Life, vol. I, p. 210.
Reminiscences of Charles Darwin, in Harper’s Magazine, December, 1909, vol. CXX, p. 15.
To Müller, August 28, 1870, More Letters, vol. II, p. 92.
Beagle Journal, p. 499.
Life, vol. II, p. 377.
Descent of Man, p. 70.
Life, vol. II, p. 309.
To Wallace, July 12, 1881, in Wallace, Life, vol. II, p. 15.
To Wallace, July 12, 1881, in Wallace, Life, vol. II, p. 14.
To Lyell, January 22, 1865, Life, vol. II, p. 217.
Krause, p. 70.
Emma Wedgwood to Madame Sismondi, November 15, 1838, Family Letters, vol. II, p. 7.
To Gurney, July 8, 1876, Life, vol. II, p. 364.
Family Letters, vol. II, p. 171.
Life, vol. I, p. 103.
Ibid.
Beagle Journal, p. 112.
Life, vol. I, p. 43.
Life, vol. I, p. 42.
To Susan Darwin, April 23, 1835, Life, vol. I, p. 233.
Life, vol. I, p. 146.
Life, vol. I, p. 42.
Life, vol. I, p. 81.
Life, vol. II, p. 178.
To Mrs. Haliburton, November 22, 1880, Life, vol. II, p. 508.
To Henslow, July 24, 1834, More Letters, vol. I, p. 14.
To Hooker, March 17, 1867, More Letters, vol. II, p. 2.
To Rivers, December 28, 1866, Life, vol. II, p. 241.
Darwiniana, p. 286.
Life, vol. I, p. 102.
Life, vol. I, p. 81.
Ibid.
Life, vol. I, p. 57.
Life, vol I, p. 81.
E. B. Titchener, in Popular Science Monthly, January, 1909, vol. LXXIV, p. 47.
Causeries du Lundi, vol. IV, p. 45.
To Newton, May 3, 1780, The Correspondence of William Cowper (edition Wright), vol. I, p. 185.
Poems (Globe edition), p. 191.
Childe Harold, canto III, stanza 72.
Sénancour, Obermann, p. 40.
Life, vol. I, p. 95.
To Mrs. Darwin, April, 1858, Life, vol. I, p. 471.
Beagle Journal, p. 322.
To Henslow, August 15, 1832, More Letters, vol. I, p. 10.
Family Letters, vol. II, p. 175.
Mrs. Darwin to Darwin, 1859, Family Letters, vol. II, p. 175.
Family Letters, vol. II, p. 201.
Beagle Journal, p. 263.
Life, vol. II, p. 308.
Ibid.
Descent of Man, p. 612.
Life, vol. II, p. 238.
Life, vol. II, p. 237.
William Darwin, in Family Letters, vol. II, p. 169.
Expression, p. 219.
Beagle Journal, p. 411.
Life, vol. I, p. 29.
Life, vol. I, p. 282.
To Lyell, September 3, 1874, More Letters, vol. II, p. 237.
Family Letters, vol. II, p. 253.
To Ridley, November 28, 1878, Life, vol. II, p. 412.
To Gray, July, 1860, Life, vol. I, p. 284.
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