Are thus prepared: Enclose half a grain of Brugnatelli's Fulminating Silver in a piece of glass paper, and that should be again enclosed in a square piece of tinfoil; this doubled in a very small compass may be placed immediately under the foot of a chair, and the chair placed very lightly upon it, or pasting it would be much better; be careful to stand the chair down very gently: on any one's setting down on a chair so prepared, a loud Detonation will follow.--This experiment is particularly innocent, and may be productive of much mirth. FULMINATING _DRAWERS_. The preparation for the drawers is the same as used for the chairs: it should be pasted directly under the drawer, or on the side; if the drawer be left partly open, the effect will more certainly be produced: on the drawer being opened or shut, a loud explosion will be caused. This experiment is also perfectly harmless, and as there could be no suspicion of the trick, it cannot fail to prove the source of much amusement, to create great surprise, and to cause many whimsical conjectures as to the origin of the wonderful phenomenon. _FULMINATING_ SNUFFERS. One fourth of a grain of Fulminating Silver is to be inclosed in a small piece of paper, and put inside the snuffers; on the snuffers being applied to the candle, a smart report will follow. Be careful to notice, that the snuffers are quite cold when the paper is introduced, as the heat would cause it to explode sooner than might be thought agreeable. FULMINATING BOOTS & SHOES. These are prepared by enclosing half a grain of Brugnatelli's Fulminating Silver in a fold of glass paper, and pasting it in the middle of a piece of court plaster; if the edges of the court plaster are then slightly wet, it will adhere, and must be placed in the middle of the heel of a boot or shoe, and by being pressed upon will detonate loudly. Observe, it must be fastened on the outside of the heel. This experiment may be easily accomplished, while you are left alone, in any apartment where boots or shoes are kept, and would cause a tolerable degree of astonishment to the wearer, on his placing his foot to the ground. FULMINATING _PIPE LIGHTS_. These lights are made by inserting one-third of a grain of Fulminating Silver, in one end of a piece of hemp-stalk, in the same way as directed for the Segars. A piece of stout deal shaving might be used, prepared in the same manner as directed for the Fulminating Cards. Be careful to notice, that, whatever is used, has some particular mark attached to it, so as to point out which end is to be lighted. _FULMINATING_ WALKING STICKS. These may be made by inclosing half a grain of Brugnatelli's Fulminating Silver in a small fold of glass paper, and putting it into a ferule, which ferule may be placed gently on the stick; and on its being applied to the ground, a loud explosion will take place. * * * * *