manner. For this purpose take a piece of fine cambric, wash it well in hot water to remove all grease and other impurities, and then treat it in the same way as the paper.
A New Fire Flash.—This forms a very good opening trick. The performer steps on the stage and, in what appears to be a careless manner, picks up a piece of paper from the floor, rolls it up in his hands, and throws it in the air, where it disappears in a flame, leaving no trace behind.
To produce this effect you must obtain some very fine glass tubing about the thickness of a darning needle, and having broken off several pieces about an inch long, fill them with sulphuric acid. This can be done with the aid of a long piece of india-rubber tubing, the acid being drawn into the glass by suction. The ends of the tube are then sealed hermetically in the flame of a spirit lamp. You must next prepare a powder composed of equal parts of chlorate of potass and powdered lump sugar. Wrap a very small quantity of this powder—about as much as will lie on a penny—together with one of the acid tubes in a piece of flash paper, and all is ready.
When rolling up the paper in the hands the tube is broken; the acid escapes and fires the
