' like 'Hands', as I have seen several.") But the most
cursory anatomical investigation at once proves that the resemblance of
the so-called "hind hand" to a true hand, is only skin deep, and that,
in all essential respects, the hind limb of the Gorilla is as truly
terminated by a foot as that of man. The tarsal bones, in all important
circumstances of number, disposition, and form, resemble those of
man (Figure 19). The metatarsals and digits, on the other hand, are
proportionally longer and more slender, while the great toe is not only
proportionally shorter and weaker, but its metatarsal bone is united by
a more moveable joint with the tarsus. At the same time, the foot is set
more obliquely upon the leg than in man.

As to the muscles, there is a short flexor, a short extensor, and a
'peronaeus longus', while the tendons of the long flexors of the great
toe and of the other toes are united together and with an accessory
fleshy bundle.

The hind limb of the Gorilla, therefore, ends in a true foot, with a
very moveable great toe. It is a prehensile foot, indeed, but is in no
sense a hand: it is a foot which differs from that of man not in
any fundamental character, but in mere proportions, in the degree of
mobility, and in the secondary arrangement of its parts.

It must not be supposed, however, because I speak of these differences
as not fundamental, that I wish to underrate their value. They are
important enough in their way, the structure of the foot being in strict
correlation with that of the rest of the organism in each case. Nor can
it be doubted that the greater division of physiological labour in Man,
so that the function of support is thrown wholly on the leg and foot, is
an advance in organization of very great moment to him; but, after all,
regarded anatomically, the resemblances between the foot of Man and
the foot of the Gorilla are far more striking and important than the
differences.

I have dwelt upon this point at length, because it is one regarding
which much delusion prevails; but I might have passed it over without
detriment to my argument, which only requires me to show that, be the
differences between the hand and foot of Man and those of the Gorilla
what they may--the differences between those of the Gorilla, and those
of the lower Apes are much greater.

It is not necessary to descend lower in the scale than the Orang for
conclusive evidence on this head.

The thumb of the Orang differ