The Skull.~--The bony part of the head is called the _skull_.

In the skull is a hollow place or chamber.

You know that a rich man often has a strong room or box in his fine house, in which to keep his gold and other valuable things.

The chamber in the skull is the strong-room of the body.

It has strong, tough walls of bone, and contains the _brain_.
The brain is the most important, and also the most tender and delicate organ in the whole body.