. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). 270 SEXUAL SELECTION: MAMMALS. [Part II. vicUe), and of certain antelopes, are furnished with a dew- lap, or great fold of skin on the neck, which is much less developed in the female. Now, what must we conclude with respect to such sexual differences as these ? No one will pretend that the ^' Fig. 66.—Pithecia Satanas, male (from Brehm). beards of certain male goats, or the dewlap of the bull, or the crests of hair along the
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). 270 SEXUAL SELECTION: MAMMALS. [Part II. vicUe), and of certain antelopes, are furnished with a dew- lap, or great fold of skin on the neck, which is much less developed in the female. Now, what must we conclude with respect to such sexual differences as these ? No one will pretend that the ^' Fig. 66.—Pithecia Satanas, male (from Brehm). beards of certain male goats, or the dewlap of the bull, or the crests of hair along the backs of certain male ante- lopes, are of any direct or ordinary use to them. It is possible that the immense beard of the male Pithecia, and the large beard of the male Orang, may protect their throats when fighting; for the keepers in the Zoological Gardens inform me that many monkeys attack each other by the throat: but it is not probable that the beard has. 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
