31. The Head, or Skull. The bones of the skeleton, the bony framework
of our bodies, may be divided into those of the head, the trunk,
and the limbs.

The bones of the head are described in two parts,--those of the
cranium, or brain-case, and those of the face. Taken together,
they form the skull. The head is usually said to contain 22 bones, of
which 8 belong to the cranium and 14 to the face. In early childhood, the
bones of the head are separate to allow the brain to expand; but as we
grow older they gradually unite, the better to protect the delicate brain
tissue.

32. The Cranium. The cranium is a dome-like structure, made up
in the adult of 8 distinct bones firmly locked together. These bones are:

One Frontal,
Two Parietal,
Two Temporal
One Occipital,
One Sphenoid,
One Ethmoid.

The frontal bone forms the forehead and front of the head. It is
united with the two parietal bones behind, and extends over the forehead
to make the roofs of the sockets of the eyes. It is this bone which, in
many races of man, gives a dignity of person and a beauty of form seen in
no other animal.

The parietal bones form the sides and roof of the skull. They are