The adult Chimpanzees, measured by Dr. Savage, never exceeded, though
the males may almost attain, five feet in height.

"When at rest, the sitting posture is that generally assumed. They are
sometimes seen standing and walking, but when thus detected, they
immediately take to all fours and flee from the presence of the
observer. Such is their organization that they cannot stand erect, but
lean forward. Hence they are seen, when standing, with the hands
clasped over the occiput, or the lumbar region, which would seem
necessary to balance or ease of posture.

"The toes of the adult are strongly flexed and turned inward, and
cannot be perfectly straightened. In the attempt the skin gathers into
thick folds on the back, showing that the full expansion of the foot,
as is necessary in walking, is unnatural. The natural position is on
all fours, the body anteriorly resting upon the knuckles. These are
greatly enlarged, with the skin protuberant and thickened like the
sole of the foot.

"They are expert climbers, as one would suppose from their
organization. In their gambols they swing from limb to limb at a great
distance, and leap with astonishing agility. It is not unusual to see
the 'old folks' (in the language of an observer) sitting under a tree
regaling themselves with fruit and friendly chat, while their
'children' are leaping around them, and swinging from tree to tree
with boisterous merriment.

"As seen here, they cannot be called _gregarious_, seldom more than
five, or ten at most, being found together. It has been said, on good
authority, that they occasionally assemble in large numbers, in