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[11] _Origin of Species_, pp. 230-232; Bates's _Naturalist on the Amazons_. Darwin is "surprised that no one has hitherto advanced the demonstrative case of neuter insects, agai...
4. Chapter 4Weak or defective eyesight is by no means rare as a spontaneous variation in animals, "the great French veterinary Huzard going so far as to say that a blind race [of horses] co...
5. Chapter 5[16] _Life and Letters_, i. p. 16. Darwin's reverence for his father "was boundless and most touching. He would have wished to judge everything else in the world dispassionately...
6. Chapter 6[64] _Ibid._, i. 460. Thus, where two brothers married two sisters all the seven children were perfect albinos, although none of the parents or their relatives were albinos. In...
2. Chapter 2The extract concerning a somewhat similar "class of difficulties," which Mr. Spencer quotes from his _Principles of Biology_, is faulty in its reasoning,[9] though legitimate in...
1. Chapter 1Produced by Bryan Ness, Stephen Blundell and the Online Distributed Proofreading Team at https://www.pgdp.net (This book was produced from scanned images of public domain materi...
7. Chapter 7Modern philanthropy--so far at least as it ever studies ultimate results--constantly relies on this ill-founded belief as its justification for ignoring the warnings of those wh...