3/14 It is made of a number of bones joined together in such a way as to leave a hollow place inside to hold the brain. The front part of the skull forms the framework of the face and the jaws. In each ear there are three curious little bones, which aid us in hearing. The Trunk.~--The bones of the trunk are, the _ribs_, the _breast-bone_, the _pelvis_, and the _back-bone_. The bones of the trunk form a framework to support and protect the various organs within its cavities. |