This is a glass plateau, in form like a school slate, there being a broad fancy wood border, glass taking the place of the slate. The plateau is held like a tray in the hands of the performer, and coins are placed upon it, which disappear when it is waved in the air. The secret lies in the fact that the wooden border is undermined, and, when a sideways movement is given to the plateau, the coins disappear underneath. The plateau is then carried with that side in which the coins are concealed, downwards. It makes a trick of itself, but is more useful as an adjunct to other tricks. As it is advisable to have a very narrow frame, shillings should be used: in no case coins larger than a florin. The plateau is also of great use when the performer is desirous of changing several borrowed and marked coins for some of his own. Taking the plateau, with the marked coins upon it, in the right hand, he pretends to pour them off into the left hand, where the conjuror has his own coins concealed. The marked coins disappear under the frame, and the concealed ones are exhibited. When the reappearance of the coins on the plateau is desired, they may be shaken out of the frame as easily as they were sent there; but I do not advise this addition, as it is very likely to give a clue to the mystery. The article is not difficult of construction, and the fact of the greater part of the material being transparent glass, lends it a desirably innocent appearance.