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. He was thus led to
examine the ears of various monkeys, and subsequently more carefully
those of man. The peculiarity consists in a little blunt point,
projecting from the inwardly folded margin, or helix. When present, it
is developed at birth, and according to Prof. Ludwig Meyer, more
frequently in man than in woman. Mr. Woolner made an exact model of
one such case, and sent me the accompanying drawing (see fig. 2).
These points not only project inwards towards the centre of the ear,
but often a little outwards from its plane, so as to be visible when
the head is viewed from directly in front or behind. They are variable
in size, and somewhat in position, standing either a little higher
or lower; and they sometimes occur on one ear and not on the other.
They are not confined to mankind, for I observed a case in one of
the spider-monkeys (Ateles beelzebuth) in our Zoological Gardens;
and Mr. E. Ray Lankester informs me of another case in a chimpanzee in
the gardens at Hamburg. The helix obviously consists of the extreme
margin of the ear folded inwards; and this folding appears to be in
some manner connected with the whole external ear being permanently
pressed backwards. In many monkeys, which do not stand high in the
order, as baboons and some species of Macacus,* the upper portion of
the ear is slightly pointed, and the margin is not at all folded
inwards; but if the margin were to be thus folded, a slight point
would necessarily project inwards towards the centre, and probably a
little outwards from the plane of the ear; and this I believe to be
their origin in many cases
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