Draw on coloured paper with another coloured crayon the likeness of a
confederate, and dust the lines with a powder of the same hue as the
paper.
[Illustration: Fig. 52.]
In your pencil-case have a hard brush, and when you appear to draw,
remove the coloured powder.
This trick is used in connection with disappearing feats, where you
undertake to make the drawing of a card, a flower, or any vanished
article, which you are not supposed to have seen.