This volume is designed to be a working hand-book for all engaged or interested in Criminal Investigation. It has, by special permission, been translated and adapted from the well-known work of Dr. Hans Gross, Professor of Criminology in the University of Prâg and special lecturer on that subject in the University of Vienna.... Few men are so well fitted, by training and experience, as Dr. Gross to compile a work like the present.... As M. Gardeil, Professor of Criminal Law at Nancy, says, in introducing the French Translation to French Criminalists, Dr. Gross is "an indefatigable observer; a far-seeing psychologist; a magistrate full of ardour to unearth the truth, whether in favour of the accused or against him; a clever craftsman; in turn, draughtsman, photographer, modeller, armourer; having acquired by long experience a profound knowledge of the practices of criminals, robbers, tramps, gipsies, cheats, he opens to us the researches and experiences of many years. His work is no dry or purely technical treatise; it is a living book, because it has been lived."See also: Slang Expressions Commonly Used By Thieves, from Chapter 8 of the 5th ed. (1962) of Gross's Criminal Investigation.
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