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Darwin - Descent Of Man
Atec Февраль 16 2008 19:58:54
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. On the other hand, Prof. L. Meyer, in an
able paper recently published,*(2) maintains that the whole case is
one of mere variability; and that the projections are not real ones,
but are due to the internal cartilage on each side of the points not
having been fully developed. I am quite ready to admit that this is
the correct explanation in many instances, as in those figured by
Prof. Meyer, in which there are several minute points, or the whole
margin is sinuous. I have myself seen, through the kindness of Dr.
L. Down, the ear of a microcephalus idiot, on which there is a
projection on the outside of the helix, and not on the inward folded
edge, so that this point can have no relation to a former apex of
the ear. Nevertheless in some cases, my original view, that the points
are vestiges of the tips of formerly erect and pointed ears, still
seems to me probable. I think so from the frequency of their
occurrence, and from the general correspondence in position with
that of the tip of a pointed ear. In one case, of which a photograph
has been sent me, the projection is so large, that supposing, in
accordance with Prof. Meyer's view, the ear to be made perfect by
the equal development of the cartilage throughout the whole extent
of the margin, it would have covered fully one-third of the whole ear.
Two cases have been communicated to me, one in North America, and
the other in England, in which the upper margin is not at all folded
inwards, but is pointed, so that it closely resembles the pointed
ear of an ordinary quadruped in outline
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