Place two half-crowns (or pennies) on the table and a sixpence between
them. Then cover the coins with an inverted wine-glass, the edges of the
latter resting upon the larger coins. Challenge any one to remove the
sixpence without touching the glass or the money. It is done very
easily, and in an amusing manner. You have only to scratch the
tablecloth with your finger-nail in the direction you wish the coin to
come, saying: "Come hither, sixpence," and it will at once obey you.