longer than the spine in the latter. The foot is longer and the hand
much longer in the Gorilla; but the great difference is caused by the
arms, which are very much longer than the spine in the Gorilla, very
much shorter than the spine in the Man.

The question now arises how are the other Apes related to the Gorilla in
these respects--taking the length of the spine, measured in the same
way, at 100. In an adult Chimpanzee, the arm is only 96, the leg 90,
the hand 43, the foot 39--so that the hand and the leg depart more from
the human proportion and the arm less, while the foot is about the same
as in the Gorilla.

In the Orang, the arms are very much longer than in the Gorilla (122),
while the legs are shorter (88); the foot is longer than the hand (52
and 48), and both are much longer in proportion to the spine.

In the other man-like Apes again, the Gibbons, these proportions are
still further altered; the length of the arms being to that of the
spinal column as 19 to 11; while the legs are also a third longer than
the spinal column, so as to be longer than in Man, instead of shorter.
The hand is half as long as the spinal column, and the foot, shorter
than the hand, is about 5/11ths of the length of the spinal column.

Thus 'Hylobates' is as much longer in the arms than the Gorilla, as the
Gorilla is longer in the arms than Man; while, on the other hand, it is
as much longer in the legs than the Man, as the Man is longer in the
legs than the Gorilla, so that it contains within itself the extremest
deviations from the average length of both pairs of limbs (See the
illustration on page 196).