Bas-reliefs may be fastened to the wall by the use of angle-irons which can be obtained from any blacksmith. The lower edge of the relief is measured and the iron bent to fit. From six to ten inches according to the weight of the cast are allowed in the arm which is to be fastened to the wall. This arm is drilled with three or more holes. The cast is held in place on the wall and the spots where the irons are to go, marked. It is then taken down and holes are drilled in the wall into which the expansion bolts or toggle pins are put, through the iron arm. When these have been securely fastened they may be painted the color of the wall and the cast then placed upon them. A hook put in the wall at the top of the cast may be fastened into the wire eye, usually provided in such objects, to insure greater security. It is sometimes desirable where the relief is deep and heavy, as in the case of some of the gothic figures, to provide a small wooden base to hide the mechanism which holds the cast in place, and to give a greater appearance of stability. The simplest kind of mouldings are the most successful, and the fewer the members in this base, the less conspicuous it is and the easier to keep clean.
Labelling.—The labelling of a cast collection is most important, for we must remember that in dealing with such material we are educating our
