Take any card with a pip in the middle—as an ace, five, nine, &c., and
thrust through the centre a short tack, of which the head is flat and
broad, and the point made very sharp.
At the conclusion of a trick with a borrowed card like the one prepared
as above, juggle the former away, and bring the other to the bottom of
the pack, the tack point outwards. On hurling the pack horizontally
against a door or other wood-work, the pack will act like a solid body
and drive the nail in fast, when the chosen card will be displayed,
while the others fall to the floor.