THE STORY OF THE GORILLA . 
451 
points of resemblance to the human type are far fewer; the aged animal has 
become a gigantic ape, retaining indeed, in the structure of his hands and 
feet, the characteristics of his kind, while the protruding head is something 
between the muzzle of the baboon, the bear, and the boar. Simultaneously 
with these remarkable alterations of the outer structure there occurs a 
change of the skeleton. The skull of an aged male gorilla becomes more 
projecting at the muzzle, and the dog teeth have almost attained the length 
GORILLA AND YOUNG. 
of those of lions and tigers. On the upper part of the skull, which is rounded 
in youth, great bony crests are developed on the crown of the head and on 
the forehead. The arches above the eye-sockets are covered with wrinkled 
skin, and the already savage and indeed revolting appearance of the gorilla 
is thereby increased.” 
Natural history is indebted to Paul Du Chaillu, the African traveler 
and explorer, for its first definite knowledge of the gorilla. 
