. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. 532 The Descent of Man. Part II. 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
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings -- Origin. 532 The Descent of Man. Part II. 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,. Fig. 68. Pithecia satanas, male (from Brehm). 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 The mane, which occurs only in the rams of an African breed of ,s See the chapters on these ' Variation of Animals under Domes- several 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, Appleton
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