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.

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LAWS OF SYMMETRY
GENERATIONS ago Whist players noted certain coincidences of like holdings or distributions in two or more hands. A few simple truths
and probably more fictions were the results. During the past decade sufficient study of the subject has
resulted in proof of a number of facts (See "The
Field," London, October i6 and 23, I924, "Symmetry of Hands," by E. V. Shepard, for the first mathematical proofs of the Theorems given below and
the first Glossary).
GLOSSARY OF SYMMETRY
Universal use of standard terms simplifies a new
subject and obviates any excuse for a later writer
to coin new words to express one of these terms:
Duplicated: A feature reproduced. Like divisions of two suits or two hands.
Feature: A salient point of a holding or a card
distribution.
Horizontal Distribution: Division of a suit among
the four players.
Hypothesis: A conjecture. A statement offering an assumption without proof.
Laws of Symmetry of Hands: Sum total of the
known Theorems on Symmetry of Hands.
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