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9 driven through it. This feat should be done by night, with a candle placed between the spectators and operator, their eyes being thereby hindered from discerning the deception.

Put four ounces of bisbuth into a crucible, and when in a state of complete fusion, throw in two ounces and a half of lead, and one ounce and a half of tin: these metals will combine, and form an alloy fusible in boiling water. Mould the alloy into bars, and take them to a silversmith to be made into teaspoons. Place one of them in a saucer, at a tea-table, and the person who uses it will not be a little astonished to find it melt away as soon as he puts it into the hot tea.

Some amusement may be obtained among young people, by writing with common ink, a variety of questions, on different bits of paper, and adding a pertinent reply to each, written with nitro-muriat of gold. The collection is suffered to dry, and put aside till an opportunity offers for using them. When produced, the answers will be invisiblcinvisible [sic]; you desire different persons to select such questions as they may fancy, and take them home with them; you then promise, that if they are placed near the fire during the night, answers will appear beneath the questions in the