) In men, the hair over the temples is the first to turn
grey, and the hair in the front grows grey sooner than the hair at the
back; and the hair on the pubes is the last to change colour.
Some hairs are congenital, others grow after the maturity of the
animal; but this occurs in man only. The congenital hairs are on the
head, the eyelids, and the eyebrows; of the later growths the hairs on
the pubes are the first to come, then those under the armpits, and,
thirdly, those on the chin; for, singularly enough, the regions
where congenital growths and the subsequent growths are found are
equal in number. The hair on the head grows scanty and sheds out to
a greater extent and sooner than all the rest. But this remark applies
only to hair in front; for no man ever gets bald at the back of his
head. Smoothness on the top of the head is termed 'baldness', but
smoothness on the eyebrows is denoted by a special term which means
'forehead-baldness'; and neither of these conditions of baldness
supervenes in a man until he shall have come under the influence of
sexual passion. For no boy ever gets bald, no woman, and no
castrated man. In fact, if a man be castrated before reaching puberty,
the later growths of hair never come at all; and, if the operation
take place subsequently, the aftergrowths, and these only, shed off;
or, rather, two of the growths shed off, but not that on the pubes.
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