. The descent of man : and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. 532 The Descent of Man. Part 11. monkeys attack each other by the*throat; but it is not probable that the beard has been developed for a distinct purpose from that served by the whiskers, moustache, and other tufts of hair on the face; and no one will suppose that these are useful as a protection. Must we attribute all these appendages of hair or skin to mere purposeless variability in the male ? It cannot be denied that this is possible; for in many domesticated quad- rupeds, certain
. The descent of man : and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings. 532 The Descent of Man. Part 11. monkeys attack each other by the*throat; but it is not probable that the beard has been developed for a distinct purpose from that served by the whiskers, moustache, and other tufts of hair on the face; and no one will suppose that these are useful as a protection. Must we attribute all these appendages of hair or skin to mere purposeless variability in the male ? It cannot be denied that this is possible; for in many domesticated quad- rupeds, certain characters, apparently not derived through re- version from any wild parent-form, are confined to the males. ^<^. ^^^-^§:S Fig. 68. Pithecia satanas, male (from Brehni). or are more developed in them than in the females—for instance, the hump on the male zebu-cattle of India, the tail of fat-tailed rams, the arched outline of the forehead in the males of several breeds of sheep, and, lastly, the mane, the long hairs on the hind-legs, and the dewlap of the male of the Berbura goat.^^ The mane, which occurs only in the rams of an African breed of "^ See the chapters on these ' Variation of Animals tinder Domes- ceveral animals in vol. i. of my tication;' also vol. ii. p. 73; also. 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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