. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). Fig 71.—Head of Semnopithecus comatus. Fig. 72.—Head of Cebus 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 Co.

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Keywords: ., boo, bookcentury1800, bookdecade1870, booksubjectnaturalselection