Crime has been greatly developed by civilisation, by the numerous processes invented to add to the comforts and conveniences in the business of daily life. The adoption of a circulating medium was soon followed by the production of spurious money, the hundred and one devices for forging notes, manufacturing coin, and clipping, sweating, and misusing that made of precious metals. The extension of banks, of credit, of financial transactions on paper, has encouraged the trade of the forger and fabricator, whose misdeeds, aimed against monetary values of all kinds, cover an extraordinarily wide range. The gigantic accumulation no less than the general diffusion of wealth, with the variety of operations that accompany its profitable manipulation, has offered temptations irresistibly strong to evil-or weak-minded people, who seem to see chances of aggrandisement, or of escape from pressing embarrassments, with the strong hope always of replacing abstractions, rectifying defalcations, or altogether evading detection. Less criminal, perhaps, but not less reprehensible, than the deliberately planned colossal frauds of a Robson, a Redpath, or a Sadleir are the victims of adverse circumstances, the Strahans, Dean-Pauls, Fauntleroys, who succeeded to bankrupt businesses and sought to cover up insolvency with a fight, a losing fight, against misfortune, resorting to nefarious practices, wholesale forgery, absolute misappropriation, and unpardonable breaches of trust. Between the "high flyers," the artists in crime, and the lesser fry, the rogues, swindlers, and fraudulent impostors, it is only a question of degree. These last-named, too, have in many instances swept up great gains. The class of adventurer is nearly limitless; it embraces many types, often original in character and in their criminal methods, clever knaves possessed of useful qualities--indeed, of natural gifts that might have led them to assured fortune had they but chosen the straight path and followed it patiently. We shall see with what infinite labour a scheme of imposture has been built up and maintained, how nearly impossible it was to combat the fraud, how readily the swindler will avail himself of the latest inventions, the telegraph and the telephone, of chemical appliances, of photography in counterfeiting signatures or preparing banknote plates, ere long, perchance, of the Röntgen rays. We shall find the most elaborate and cleverly designed attacks on great banking corporations, whether by open force or insidious methods of forgery and falsification, attacks upon the vast stores of valuables that luxury keeps at hand in jewellers' safes and shop fronts, and on the dressing-tables of great dames. Crime can always command talent, industry also, albeit laziness is ingrained in the criminal class. The desire to win wealth easily, to grow suddenly rich by appropriating the possessions or the earnings of others, is no doubt a strong incitement