Much fraud is practised by the help of dextrously shuffling, by which
the power to place cards in certain parts of the pack is under the
control of the sharper, when become an adept in the art. The preparatory
step is a strict observance of the tricks taken up on both sides, and
their contents, when those rich in trumps or court cards are selected to
be operated upon by the shuffler, when it is his turn to deal.