Modern Magic: A Practical Treatise on the Art of Conjuring

First Order. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Second Order. 1 6 11 16 21 2 7 12 17 22 3 8 13 18 23 4 9 14 19 24 5 10 15 20 25 Thus we will suppose you are told that the card thought of is originally in the third line. Remember the first or key-card of that line, designated in the table as 11. If the card is in the fourth line after the second deal, you look to the top line for the key-card, and on finding it you have only to observe which card in the fourth row is immediately beneath it, to be sure that that card (in this instance designated by the number 14) is the card thought of. You may perform the trick with either sixteen, twenty-five, thirty-six, or forty-nine cards, either of those being a square number, and thus making the number of cards in a row equal to the number of rows, which is essential to the success of the trick.