Put several lighted candles upon the table, in a straight row and near together. Lay upon the table, in front of them, a large piece of smooth, white paper. Have ready a piece of pasteboard, large enough to conceal the candles, with a small hole cut in it above the middle. Place this so as to stand upon its edge between the row of candles and the sheet of paper in front, and there will be as many images of flames thrown through the hole and upon the paper as there are burning candles.
THE MAGIC APERTURE.
Green Fire.
Obtain some boracic acid, mix it well with a small quantity of spirits of wine, or alcohol, place the alcohol in a saucer upon a dish, and then ignite it with a match. The flame will be a beautiful green. To see the color to perfection, of course, the room should be somewhat darkened.
A green flame may also be produced by using chloride of copper instead of boracic acid. And instead of mixing it with the alcohol, a small quantity may be imbedded in the wick of a candle.
A Beautiful Imitation of Hoar Frost.
Obtain a large bell-glass, with a short neck and cork at the top, such as may be seen in the chemists' shops. Then procure a small quantity of benzoic acid, which exists in the shape of snowy crystals. Elevate the bell-glass upon a little stage made of books or pieces of wood, so as to allow a spirit-lamp to be introduced underneath, and a little evaporating dish to be held above the flame by means of a ring of wire with suitable handle. Place the benzoic acid in the evaporating dish, over the flame, and presently the acid will ascend in vapor and fill the bell, which must not be quite closed at the top. Before setting up the apparatus, introduce into the bell a small branch of foliage, which may be hung by a thread from the neck of the bell. The stiffer and more delicate this branch, the better. In a short time, it will become covered with a soft white deposit of the acid, very closely resembling hoar-frost. This makes an extremely pretty ornament for the parlor.
IMITATING HOAR-FROST.