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11. The seven trick.

Make up the four sevens of a pack, and take seven other cards, no matter which, for another lot, and, presenting both lots, you say: — Here are two lots totally dissimilar; nevertheless, there is one of seven, and I declare it will be the first touched by any party present. Of course, when touched, you at once prove your words by exhibiting either the sevens or the seven cards — taking care to mix the cards into the pack immediately to prevent detection.