6. Sulphuric acid.

7. A clear solution of gum-arabic.

Procure a champagne bottle, and wash it out well, then pour three teaspoonfuls of No. 4 into it. As the quantity is very small, it will not be observed, especially if you are quick in your movements. Pour some distilled or rain water into a common water-bottle or jug, and add a tablespoonful of No. 7 to it; then set it aside ready for use.

Provide some wine glasses of four different patterns, and into one pattern pour the solution marked No. 1, into another that marked No. 2, and so on for Nos. 3 and 5. Return the solutions to their respective bottles, and arrange the glasses on a small tray, remembering the solutions that were poured into each pattern.

Everything being ready, take the champagne bottle that you have prepared, from two or three others, and holding it up to show the company that it is clear and empty, you must desire some person to hand you the water bottle or jug, and then fill up the bottle with the water.

Pour some of the contents of the bottle into an unprepared glass, in order to show that it is water; then say, "change to champagne," and pour the liquid from the bottle into one of the glasses rinsed with No. 5; then pour into a glass rinsed with No. 1, and it will change to port wine; but if poured into No. 3, it will change to milk, and if into No. 2, it will produce sherry. Be careful in pouring the fluid from the bottle, not to hold it high above the glasses, but to keep the mouth of it close to the edges of the glasses, otherwise persons will observe that it undergoes change of color after it is poured into the wine glasses, and on this account the glasses should be held rather high.

∵ As the solutions used in the above trick are deleterious, they must not be left about in the way of children, and of course the fluid in the wine glasses must not even be tasted; but if any of the company wish to drink the wines you have made, then the tray must be adroitly exchanged for another with the proper wines placed on it.

This is an excellent parlor trick if well managed, and is not difficult to comprehend.

59. THE BOTTLE TRICK.