TRICKS AND PUZZLES
Any one who wishes to play a trick or show off a puzzle should test it privately, before attempting to show it before company, for often, owing to some slight error, the trick may at first prove a failure, whereas a little practice will soon make one perfect.
The Dancing Egg
Get a hard-boiled egg and place it on the reverse side of a smooth polished plate or bread-platter. If you now turn the plate round while holding it in a horizontal position, the egg, which is in the middle of it, will turn round also, and as the pace is quickened, the egg will move more and more quickly, until it stands up on one end and spins round like a top. In order to be quite sure that the experiment will succeed, you should keep the egg upright while it is being boiled, so that the inside may be hardened in the proper position.
The Magic Thread
Soak a piece of thread in a solution of salt or alum (of course, your audience must not know you have done this). When dry, borrow a very light ring and fix it to the thread. Apply the thread to the flame of a candle; it will burn to ashes, but will still support the ring.