Dissolve some common salt in spirits of wine, and pour the whole on some saffron in a saucer. Take away the candle from the room, and set fire to the spirit with a little burning tow. The countenances of every person in the room will, by this light, put on a cadaverous, deadly appearance, the fairest complexion appearing green, whilst the red of the lips and cheeks will be of an olive hue.
To dispose two little Figures, so that one shall light a Candle, and the other put it out.
Take two little figures of wood or clay, or any other materials you please, only taking care there is a little hole at the mouth of each. Put in the mouth of one a few grains of bruised gunpowder, and a little bit of phosphorus in the other, taking care that these preparations are made beforehand; then take a lighted wax candle, and present it to the mouth of the figure with the gunpowder, which, taking fire, will put the candle out; then present your candle, having the snuff quite hot, to the other figure; it will light again immediately by means of the phosphorus. You may propose the same effect to be produced by two figures, drawn on a wall with a pencil or a coal, by applying, with starch or a wafer, a few grains of bruised gunpowder to the mouth of one, and a bit of phosphorus to the mouth of the other.
To construct a Lantern which will enable a Person to read by Night, at a great Distance.
Make a lantern of a cylindric form, or shaped like a small cask placed lengthways, so that its axis may be horizontal, and fix in one end of it a parabolic or spheric mirror, so that its focus may fall about the middle of the axis of the cylinder. If a small lamp or taper be placed in this focus, the light, passing through the other end, will be reflected to a great distance, and will be so bright, that very small letters on a remote object may be read, by looking at them with a good telescope. Those who see this light, if they be in the direction of the axis of the lantern, will think they see a large fire.
TRICKS WITH STRINGS, KNOTS, &c.
To cut a Lace asunder in the Middle, and to make it whole again.
Provide a piece of the lace which you mean to cut, or at least a pattern like the same, one inch and a half long, and keep it double privately in your left hand, between some of your fingers, near to the tips thereof; take the other lace which you mean to cut, still hanging about your neck, and draw down your said left hand to the bout thereof, and, putting your own piece a little before the other, the end, or rather middle, whereof you must hide betwixt your fore-finger and thumb, make the eye or bout which shall be seen of your own pattern; let a bystander cut the same asunder, and it will be surely thought that the other lace is cut; which, with words and fretting, you shall seem to renew, and make whole again. This, if it be well handled, will seem very wonderful.