BRAIN OF A GORILLA 25

Thou hast put all things under his feet : all sheep and
oxen, yea, and the beasts of the field ; the fowl of the
air, and the fish of the sea, whatsoever passeth through
the paths of the seas.’

The frame of man differs but little from that of
the living things around him, but his dominion over
them is palpable and undeniable. Year by year those
that might contest it with him, were it a matter of
structure alone, are edged away. The monsters of
the past and the present, the carnivores, the serpents,
every possibly dominant form of the air and land and
sea, struggle in vain against his superiority. And
every wild animal or wild plant that he judges in his
ignorance to be ‘of no use’ he dooms to extinction as
‘vermin’ or ‘ weeds.’

In mere weight of brain he is a long way above
those he most resembles. The gorilla’s brain is only
two-thirds that of the smallest human brain—in fact,
a man may have a brain three times as heavy as that
of the gorilla. The average human brain weighs just
under 50 ounces ; that of the gorilla does not exceed
20 ounces. The cranial capacity. is never less than
55 cubic inches in any normal man or woman, while
in the chimpanzee it is but 274 cubic inches, and in
the orang it is less. This preponderance of brain is
the one great anatomical distinction between him and
the brutes, whom he resembles in every bone and
muscle, nerve and blood-vessel, and from whom the
eighty vestigial structures in his muscular, skeletal, and
other systems—things obviously of no use to him and
only valuable as illustrations in hospital practice—
render it impossible to admit his physical separation.