volunteer assistant to drop the half dollar (disk) into the glass. The disk will be precipitated into the glass with a jingle that exactly simulates the falling of a genuine coin, and will adhere to the bottom of the glass, where it will not be seen. You may even pour out the water, but the disk, thanks to the power of suction, will remain in the same position, firmly attached to the drinking glass, which of course must have a flat bottom. A ginger-ale or beer glass of small diameter comes in handy for this capital trick. After sufficient palaver, the genuine half-dollar may be reproduced from under the table or from the pocket of the volunteer assistant.
The Penetrating Coin.—This coin trick may be performed anywhere, and requires no special preparation. A borrowed Derby hat is placed upon the mouth of a tumbler, (Fig. 10). Three half dollars are now borrowed and tossed into the hat, whereupon one of the coins is seen to penetrate the crown of the hat, and drop visibly and audibly into the tumbler beneath. It is thus explained. In the act of placing the hat on the glass, secretly and without jingling, slip a coin of your own between the rim of the glass and the hat. The weight of the latter will retain
