TO PLACE THE FOUR KNAVES UPON ONE ANOTHER SO THAT ONLY THE UPPER HALF OF EACH CARD IS VISIBLE.
Upon the lower half of one of four knaves place the upper half of the second at right angles; upon the lower half of the second knave place the upper half of the third, also rectangularly; then the upper half of the fourth knave upon the under half of the third; and lastly push the under half of the fourth knave under the upper half of the first, and the trick is done.