Or, put a few grains of chlorate of potash into a tablespoonful of spirit of wine; add one or two drops of sulphuric acid, and the whole will burst into a beautiful flame.
TO COOL FLAME BY METAL.
Encircle the very small flame of a floating night light, with a cold iron wire, which will instantly cause its extinction.
PROOF THAT FLAME IS HOLLOW.
Pour some spirit of wine into a watch-glass, and inflame it; place a straw across this flame, and it will only be ignited and charred at the outer edge; the middle of the straw will be uninjured, for there is no ignited matter in the center of the flame.
TO HOLD A HOT TEA KETTLE ON THE HAND.
Be sure that the bottom of the kettle is well covered with soot; when the water in it boils, remove it from the fire, and place it upon the palm of the hand; no inconvenience will be felt, as the soot will prevent the heat being transmitted from the water within and the heated metal, to the hand.
INCOMBUSTIBLE LINEN.
Make a strong solution of borax in water, and steep in it linen, muslin, or any article of clothing; when dry, they cannot easily be inflamed. A solution of phosphate of ammonia with sal ammoniac answers much better.
THE BURNING CIRCLE.