TO TAKE A PORTRAIT IN THREE MINUTES.

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.

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.