The Witch’s Cave.
Write several questions and answers on paper; for the answers, instead of nitro-muriate of gold, you may use the juice of a citron, or an onion. Let any of the questions be chosen by a party, and placed in a box, which may be called “The Witch’s Cave.” This box must be furnished with a piece of hot iron, beneath a false bottom of tin; when the paper is put in it, the heat will cause the answer to appear; you then take it out, show it to the person who made choice of the question, and, as soon as it is read, put it aside; the answer will vanish when the paper becomes cold again.