remarkable contributions to the just understanding of the
mammalian brain which has ever been made, would have been the
first to admit the insufficiency of his data had he lived to
profit by the advance of inquiry. The misfortune is that his
conclusions have been employed by persons incompetent to
appreciate their foundation, as arguments in favour of
obscurantism. (80. For example, M. l'Abbe Lecomte in his
terrible pamphlet, 'Le Darwinisme et l'origine de l'Homme,'
1873.)

But it is important to remark that, whether Gratiolet was right
or wrong in his hypothesis respecting the relative order of
appearance of the temporal and frontal sulci, the fact remains;
that before either temporal or frontal sulci, appear, the foetal
brain of man presents characters which are found only in the
lowest group of the Primates (leaving out the Lemurs); and that
this is exactly what we should expect to be the case, if man has
resulted from the gradual modification of the same form as that
from which the other Primates have sprung.





End of T.H. Huxley's On the Brain [from Descent of Man by Charles Darwin]



T.H. Huxley On the Brain from Descent of Man by Charles Darwin