To Light a Candle by a Glass of Water.
Take a little piece of phosphorus, of the size of a pin’s head, and with a piece of tallow, stick it on the edge of a drinking-glass. Then take a lighted candle, and having blown it out, apply it to the glass, when it will immediately be lighted. You may likewise write, with a bit of phosphorus, on paper, some words, which will appear awful, when the candle is withdrawn from the room.