Correct contract bridge / by E.V. Shepard ; including the official Laws of contract bridge adopted by the Whist Club, New York, and by all the leading clubs in America.

LAWS OF CONTRACT BRIDGE 227

If the player at the left of the offender become
Declarer he may, before the Dummy is exposed,
prohibit a lead of the suit of the exposed card by
the partner of the offender. When two or more
cards are exposed by the same player, all are subject to the provisions of this law; but the Declarer
may not forbid the lead of more than three suits.
THE CONTRACT
29. At the end of the contracting the highest
bid becomes the contract. The partners who secure
the contract undertake to win at least six tricks (the
book), plus the number of tricks named in the
contract.
The partners who secure the contract become
respectively Declarer and Dummy. The player
who first, for his side, named the suit or No Trump
of the contract, becomes Declarer; his partner,
Dummy. The partners who do not secure the contract become the adversaries: the- one on Declarer's
left hereinafter termed Senior; the one on Declarer's
right hereinafter termed Junior.
THE DUMMY
30. (a) After the end of the contracting, unless
all four players have passed initially, the play begins, and continues until the last card is played to
the thirteenth trick. Senior leads; Dummy places
his cards face up on the table and Declarer plays
Dummy's cards in addition to playing his own.
(b) During the play, Dummy may not: