This is the trick I alluded to at the commencement of the
chapter, the mode of performing which I succeeded in discovering.
Of course ANY NUMBER of persons may think of cards, remembering
their order, and the operator will tell them, in like manner.
8. A person having thought of one of fifteen cards presented to
him, to guess the card thought of.
Form three ranks of five cards each, and request a party to think
of one of these cards, and tell you in which rank it is. Take up
the cards of the three ranks, taking care to place the cards of
the ranks in which is the card thought of between those of the
two other ranks.
Make three more ranks as before. Ask the party again in which
rank the card is, and take them up, placing the rank in which the
card is between the two others. Operate in like manner a third
time, and the card thought of will infallibly be the THIRD of the
rank named by the party.
Observe, however, you must not form each rank with five
consecutive cards; but you must place the cards one by one,
placing one successively in each rank; thus, one at the top on
the left of the first rank, one below that first for the second
rank, one below the second for the third rank, then one in the
first, one in the second, one in the third, and so on.
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