charles_darwin
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The Origin of Species<br />
18. On the Origin of Species by Means of Natural Selection, or the Preservation<br />
of Favoured Races in the Struggle for Life, 5th edition (London: John<br />
Murray, 1869), 92.<br />
19. The Origin of Species by Means of Natural Selection, or the Preservation<br />
of Favoured Races in the Struggle for Life, 6th edition (London: John<br />
Murray, 1872), 63.<br />
20. The Origin of Species, 6th edition, 168–204.<br />
21. Ibid., 176.<br />
22. St. George Jackson Mivart, On the Genesis of Species (London:<br />
Macmillan, 1871), 97–112; compare with The Origin of Species, 6th edition,<br />
202–204. Darwin used the phrase Natura non facit saltum (nature does not<br />
make any jumps) six times in the first edition of The Origin of Species. Each<br />
time he called the idea a ‘‘canon’’ or fundamental principle of natural<br />
history.<br />
23. The Origin of Species, 1st edition, 171.<br />
24. Ibid., 207.<br />
25. Ibid., 1, 2, 4, 481.<br />
26. The Formation of Vegetable Mould (London: John Murray, 1881),<br />
3–7, 305–308.<br />
27. Ernst Haeckel, The Evolution of Man: A Popular Exposition of the<br />
Principal Points of Human Ontogeny and Phylogeny (New York: D. Appleton<br />
and Co., 1879), I: 95. The italics are Haeckel’s.<br />
28. The Origin of Species, 459, 488–489.<br />
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