It is the only movable bone of the head, having a vertical and lateral motion by means of a hinge joint with a part of the temporal bone. 35.

] The "mounting" of articles of furniture with metal enrichments doubtless originated in the iron corner pieces and hinge plates, which were used to strengthen the old chests, of which mention has been already made, and as artificers began to render their productions decorative as well as useful, what more natural progress than that the iron corners, bandings, or fastenings, should be of ornamental forged or engraved iron.