contrary, has its cerebellum entirely hidden, posteriorly, by the
cerebral lobes, and possesses a large posterior cornu with a
well-developed hippocampus minor."

This statement was a strictly accurate account of what was known
when it was made; and it does not appear to me to be more than
apparently weakened by the subsequent discovery of the relatively
small development of the posterior lobes in the Siamang and in
the Howling monkey. Notwithstanding the exceptional brevity of
the posterior lobes in these two species, no one will pretend
that their brains, in the slightest degree, approach those of the
Lemurs. And if, instead of putting Hapale out of its natural
place, as Professor Bischoff most unaccountably does, we write
the series of animals he has chosen to mention as follows: Homo,
Pithecus, Troglodytes, Hylobates, Semnopithecus, Cynocephalus,
Cercopithecus, Macacus, Cebus, Callithrix, Hapale, Lemur,
Stenops, I venture to reaffirm that the great break in this
series lies between Hapale and Lemur, and that this break is
considerably greater than that between any other two terms of
that series. Professor Bischoff ignores the fact that long
before he wrote, Gratiolet had suggested the separation of the
Lemurs from the other Primates on the very ground of the
difference in their cerebral characters; and that Professor
Flower had made the following observations in the course of his
description of the brain of the Javan Loris: (75. 'Transactions
of the Zoological Society,' vol. v. 1862.)

"And it is especially remarkable that, in the development of the
posterior lobes, there is no approximation to the Lemurine, short
hemisphered brain, in those monkeys which are commonly supposed