WITH any pack, after it has been well shuffled, secretly sight the two top cards. Riffle shuffle retaining these cards on the top. Put the pack down and have a spectator cut it at about the middle. Invite him to touch one packet. Whichever he touches interpret his choice so that he gets the one with the two cards you know on top. Tell him to do just as you do. Take the bottom card and put it in the center of your heap. He does the same. Put the top card in your right-hand pocket. He does the same. Put the bottom card in the middle and the top card in your left hand pocket. He does the same. Lastly put the top and bottom cards in the middle. He follows suit. "It is a most peculiar thing," you say, "but through some strange sympathy that exists amongst the cards, the one in my right-hand pocket will indicate to me what the card in your right-hand pocket is, and the one in my left pocket will tell me what the one in your left hand pocket happens to be." Take out the card from your right pocket, show it and then deducing from it any plausible or fanciful reason, name the card in his right hand pocket. Do the same with the other cards. The putting of the cards from the bottom to the middle is merely to confuse and misdirect the spectator.