The REASON of this trick is simply that by merely cutting the
cards, and shuffling them in the way indicated, you do not alter
the SEQUENCE of the cards. With regard to this sort of
SHUFFLING, I may say that it is simply CUTTING the cards-- always
preserving their sequence--a most important fact for
card-players, since it may lead to a pretty accurate conjecture
of all the hands after a deal, from the study of the one in hand,
with reference to the tricks turned down after the previous deal,
as already suggested. Hence, in shuffling for whist or other
games, the cards should not be shuffled in this way, but more
thoroughly mixed by the edgewise shuffling of certain players.
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.