everal striking cases have been recorded[819] of inherited baldness
with {327} inherited deficiency, either complete or partial, of the teeth.
We see the same connexion in those rare cases in which the hair has been
renewed in old age, for this has "usually been accompanied by a renewal of
the teeth." I have remarked in a former part of this volume that the great
reduction in the size of the tusks in domestic boars probably stands in
close relation with their diminished bristles, due to a certain amount of
protection; and that the reappearance of the tusks in boars, which have
become feral and are fully exposed to the weather, probably depends on the
reappearance of the bristles. I may add, though not strictly connected with
our present point, that an agriculturist[820] asserts that "pigs with
little hair on their bodies are most liable to lose their tails, showing a
weakness of the tegumental structure. It may be prevented by crossing with
a more hairy breed."

In the previous cases deficient hair, and teeth deficient in number or
size, are apparently connected. In the following cases abnormally redundant
hair, and teeth either deficient or redundant, are likewise connected. Mr.
Crawfurd[821] saw at the Burmese Court a man, thirty years old, with his
whole body, except the hands and feet, covered with straight silky hair,
which on the shoulders and spine was five inches in length. At birth the
ears alone were covered. He did not arrive at puberty, or shed his milk
teeth, until twenty years old; and at this period he acquired five teeth in
the upper jaw, namely four incisors and one canine, and four incisor teeth
in the lower jaw; all the teeth were small. This man had a daughter, who
was born with hair within her ears; and the hair soon extended over her
body. When Captain Yule[822] visited the Court, he found this girl grown
up; and she presented a strange appearance with even her nose densely
covered with soft hair. Like her father, she was furnished with incisor
teeth alone. The King had with difficulty bribed a man to marry her, and of
her two children, one, a boy fourteen months old, had hair growing out of
his ears, with a beard and moustache. This strange peculiarity had,
therefore, been inherited for three generations, with the molar teeth
deficient in the grandfather and mother; whether {328} these teeth would
likewise fail in the infant could not be told. Here is another case
communicated to me by Mr. Wallace o