102.)
"So far as cerebral structure goes, therefore, it is clear that
man differs less from the chimpanzee or the orang, than these do
even from the monkeys, and that the difference between the brain
of the chimpanzee and of man is almost insignificant when
compared with that between the chimpanzee brain and that of a
Lemur."
In the paper to which I have referred, Professor Bischoff does
not deny the second part of this statement, but he first makes
the irrelevant remark that it is not wonderful if the brains of
an orang and a Lemur are very different; and secondly, goes on to
assert that, "If we successively compare the brain of a man with
that of an orang; the brain of this with that of a chimpanzee; of
this with that of a gorilla, and so on of a Hylobates,
Semnopithecus, Cynocephalus, Cercopithecus, Macacus, Cebus,
Callithrix, Lemur, Stenops, Hapale, we shall not meet with a
greater, or even as great a, break in the degree of development
of the convolutions, as we find between the brain of a man and
that of an orang or chimpanzee."
To which I reply, firstly, that whether this assertion be true or
false, it has nothing whatever to do with the proposition
enunciated in 'Man's Place in Nature,' which refers not to the
development of the convolutions alone, but to the structure of
the whole brain. If Professor Bischoff had taken the trouble to
refer to p.
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