Sharps and Flats / A Complete Revelation of the Secrets of Cheating at Games of Chance and Skill

THE DETECTION OF KEPPLINGER
A COMPLETE REVELATION OF
AT GAMES OF CHANCE AND SKILL
BY JOHN NEVIL MASKELYNE
LONDON
LONGMANS, GREEN, AND CO.
AND NEW YORK: 15 EAST 16th STREET 1894
All rights reserved
TO THE ATTENTION OF THAT MAJORITY SPOKEN OF BY CARLYLE AND WHICH MAY BE SAID TO INCLUDE ALL GAMBLERS THIS BOOK IS PARTICULARLY ADDRESSED BY THE AUTHOR

In presenting the following pages to the public, I have had in view a very serious purpose. Here and there may be found a few words spoken in jest; but throughout my aim has been particularly earnest.
This book, in fact, tends to point a moral, and present a problem. The moral is obvious, the problem is ethical; which is, perhaps, only another way of saying something different.