readily heard one or two miles.

3dly, That it may be capable of great viciousness and violence when
irritated; and this is especially true of adult males.

4thly, That it may build a nest to sleep in.

Such being well-established facts respecting the Asiatic anthropoids,
analogy alone might justify us in expecting the African species to
offer similar peculiarities, separately or combined; or, at any rate,
would destroy the force of any attempted _à priori_ argument against
such direct testimony as might be adduced in favor of their existence.
And if the organization of any of the African apes could be
demonstrated to fit it better than either of its Asiatic allies for
the erect position and for efficient attack, there would be still less
reason for doubting its occasional adoption of the upright attitude,
or of aggressive proceedings.

[Illustration: HEAD OF CHIMPANZEE.]

From the time of Tyson and Tulpius downward the habits of the young
Chimpanzee in a state of captivity have been abundantly reported and
commented upon. But trustworthy evidence as to the manners and customs
of adult anthropoids of this species, in their native woods, was
almost wanting up to the time of the publication of the paper by Dr.
Savage, to which I have already referred, containing notes of the
observations which he made, and of the information which he collected
from sources which he considered trustworthy, while resident at Cape
Palmas, at the north-western limit of the Bight of Benin.