Cut a piece of pasteboard into a circular shape, and describe on it a
spiral line; cut this out with a pen-knife, and then suspend it on a
large skewer or pin. If the whole be now placed on a warm stove, or
over the flame of a candle or lamp, it will revolve with considerable
velocity. The card, after being cut into the spiral, may be made to
represent a snake or dragon, and when in motion will produce a very
pleasing effect.