BREAD.
A supply of the soft part of home-made, if possible, or good ordinary baker’s bread, one day old, is indispensable. This should not have any butter, or even milk, in its composition, otherwise it will grease the paper, which naturally should be avoided, as grease spots are most difficult to overcome.
The bread is used for rubbing out charcoal or crayon, erasing mistakes, and for taking out lights from a mass of dark. The soft crumb is rolled between the fingers until a point is formed, and then applied to the paper. It is surprising what brilliant effects can be obtained by means of this simple process; its full resources can only be understood by practice.