Having thus produced the gas, it is to be passed into a large bladder, having a stop-cock; and when you are desirous of exhibiting its effects, you cause the person who wishes to experience them, to first exhale the atmospheric air from the lungs, and then quickly placing the cock in his mouth, you turn it, and bid him inhale the gas. Immediately, a sense of extraordinary cheerfulness, fanciful flights of imagination, an uncontrollable propensity to laughter, and a consciousness of being capable of great muscular exertion, supervene. It does not operate in exactly the same manner on all persons; but in most cases the sensations are agreeable, and have this important difference from those produced by wine or spirituous liquors, that they are not succeeded by any depression of mind.
FLAME FROM COLD METALS.
Provide a bottle of the gas chlorine, which may be purchased of any operative chemist, and with it you may exhibit some brilliant experiments.
For example, reduce a small piece of the metal antimony to a very fine powder in a mortar; place some of this on a bent card, then loosen the stopper of the bottle of chlorine, and throw in the antimony; it will take fire spontaneously, and burn with much splendor, thus exhibiting a cold metal spontaneously bursting into flame.
If, however, a lump of antimony be dropped into the chlorine, there will be no spontaneous combustion, nor immediate change; but, in the course of time, the antimony will become incrusted with a white powder, and no chlorine will be found in the bottle.
Or, provide copper in fine leaves, known as "Dutch metal;" slightly breathe on one end of a glass rod, about ten inches long, and cause one or two leaves of the metal to adhere to the damp end; then open a bottle of chlorine, quickly plunge in the leaves, when they will instantly take fire, and burn with a fine red light, leaving in the bottle a greenish-yellow solid substance.
A small lump of copper, or "Dutch metal," will not burn as above, but will be slowly acted upon, like the antimony.
Immerse gold leaf in a jar of chlorine gas, and combustion with a beautiful green flame will take place.
PHOSPHORUS IN CHLORINE.
Put into a deflagrating spoon about four grains of phosphorus, and let it down into a bottle of chlorine, when the phosphorus will ignite instantaneously.