. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. Fig. 54.—Part of a tail-covert of Poly plcctron cbinquiB, with the- two ocelli of natural Pio. B5. —Pari r i i .. r Polyplectron moteoom^ Utth the two ooolll, pArtUBj owl* •Ot| f natural Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin,

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. The descent of man, and selection in relation to sex. Evolution (Biology); Sexual selection in animals; Sexual dimorphism (Animals); Sex differences; Human beings. Fig. 54.—Part of a tail-covert of Poly plcctron cbinquiB, with the- two ocelli of natural Pio. B5. —Pari r i i .. r Polyplectron moteoom^ Utth the two ooolll, pArtUBj owl* •Ot| f natural Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York: D. Appleton and Company

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Keywords: ., bookcentury1900, booksubjectevolutionbio, booksubjecthumanbeings