Produced by Chuck Greif and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images available at The Internet Archive) I have divided the stories that are here collected under one cover into various classes, so that such readers as want to compare their own experiments, let us say, in blackmailing or spiritualistic séances, with those of other students, may find such tales as deal with their own speciality in crime or superstition grouped together in separate sections of this book. They will thus be spared a skipping hunt through pages in which they feel no personal interest.…
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