BUY a pack of Bicycle Cards, the case of which contains a replica of the back design of the cards. Cut this out of the case. Split one of the cards and to its back paste a piece of good black pencil carbon paper cut to size, the prepared side of the carbon paper downwards. Paste around the quarter-inch white edge of the cut-out card case and lay the prepared carbon card on it. With the pack inside put the case under heavy pressure to dry. To use this faked case put a card with but few spots, such as one of the 2's, on the face of the pack and put the pack in the case so that this card is next to the carbon paper. Anything written on a piece of paper placed on the back of the case will be reproduced by the carbon on the face of the top card. The pencil used should be a hard one and not more than three inches long so that the writer is induced to bear down heavily. To present the trick, or rather a trick, since the fake can be used in many ways, invite a spectator to step forward. Tell him to merely think of any card in the pack, he can change his mind as often as he likes till he fixes definitely on one card. Merely as a matter of precaution and as a means of helping him to concentrate on the card, hand him a piece of paper and a pencil and ask him to write the name of the card. Casually take the pack and place it under the paper as a support. Turn away while the writing is done, telling him to fold the paper and put it in his pocket. Take back the case and the pencil and impress on the subject that he must concentrate his thoughts on the card while you run through the pack. Take this out with the cards facing you, read the impression on the top card and after the proper amount of hesitation and searching, take out the card and lay it face down on his outstretched hand. Have him take out the paper and read the name of the card then hold it up for all to see.