File:The descent of man, and selection in relation to sex (1871) (14783077695).jpg

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Identifier: descentofmansele02darw (find matches)
Title: The descent of man, and selection in relation to sex
Year: 1871 (1870s)
Authors: Darwin, Charles, 1809-1882
Subjects: Evolution Natural selection Heredity Human beings -- Origin Evolution
Publisher: London, J. Murray
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Fig. 35. Chaniaelcon Ijlfurcu?. Upper fijnrn, male: lower figure, female. bull, goat, or other sheath-horned ruminant. Althoughthe three horns differ so much in appearance fromthe two great prolongations of the skull in C. hifiireus,we can hardly doubt that they serve the same generalpurpose in the economy of these two animals. The D 2 36 SEXUAL SELECTION. PartIL first conjecture wliicb will occur to every one is thatthev are used bv the males for fiHitino- tosfether; butDr. Giinther, to whom I am indebted lor the fores-oinofdetails, does not believe that such peacable crea-tures would ever become pugnacious. Hence we are driven to infer thatthese almost mon-strous deviationsof structure serveas masculine orna-ments. With many kindsof lizards, the sexesdiffer sliohtlv in co-lour, the tints andstripes of the malesbeing brighter andmore distinctly de-fined than in thefemales. This, forinstance, is the case^vith the previously-mentioned Cophotis and with theAcantliodadylus capensis of S.

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  • bookid:descentofmansele02darw
  • bookyear:1871
  • bookdecade:1870
  • bookcentury:1800
  • bookauthor:Darwin__Charles__1809_1882
  • booksubject:Evolution
  • booksubject:Natural_selection
  • booksubject:Heredity
  • booksubject:Human_beings____Origin
  • bookpublisher:London__J__Murray
  • bookcontributor:MBLWHOI_Library
  • booksponsor:MBLWHOI_Library
  • bookleafnumber:46
  • bookcollection:biodiversity
  • bookcollection:MBLWHOI
  • bookcollection:blc
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
Flickr posted date
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30 July 2014

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