restored, he used his influence with Napoleon to obtain the ingenuous man’s re-appointment as village curé. Under the Revolution the spy was replaced by the official denunciator, an agent no less formidable. At length came the Empire, and then Fouché invested espionage with the importance of a science. In 1812 the “brigade of safety” appeared, which was first composed of four agents, but which, in 1823 and 1824, always under the direction of the famous Vidocq, numbered close upon thirty. Delavau, the prefect of police, had permitted him to establish, on the public road, a game known as “troll-madam”; and this game, an excellent trap for boobies and passers-by whose slightest words and actions were keenly watched by Vidocq’s hounds, produced, from the 20th of July to the 4th of August, 1823, a net profit of 4,364 francs. This sum was added to the subvention already granted to the spy department. The Prefect Delavau returned to the method of Lieutenant Berryer in employing as spies convicts, whom he threw back into prison for the slightest fault. One of his predecessors, Baron Pasquier, had endeavoured, like Berryer, to enlist domestic servants into the secret police force; and, with this object, Delavau renewed an old ordinance, calling upon them to get their names noted in the books of the prefecture every time they entered a situation or left one. The domestics, however, perceived the motive of Delavau’s measure, and were so unanimous in withholding their names from the books in question, that all idea of family espionage, on which much value had been set, was soon to be abandoned. Delavau drew even more largely upon the criminal class for his myrmidons than Pasquier had done, and in his day no public gathering took place at which some felon, released for the purpose from gaol, was not lurking about for an ill-sounding word or a suspicious gesture. Such agents as these worked with the industry of bloodhounds. “Between the populace and the subalterns of the police,” says the historian Peuchet, “there is a continual war; the latter are ill-bred dogs who seize every opportunity for applying their fangs. The police will never inspire respect for order so long as part of its force consists of released gaol-birds who owe a grudge to the whole of the people. When these two elements are in contact there is inevitably a fermentation.” The justice of these remarks was recognised by M. Delavau’s successor, M. de Belleyme, whose first care was to dismiss and even restore to their respective prisons this army of felon-spies. To-day, although he has not risen much in public estimation, the spy of the police-force is a citizen in every sense of the word, enjoying all the rights of a Frenchman, and not obtaining his commission from the prefecture until after his past life and his moral character have stood the test of a keen investigation. Thus espionage has been purified as far as that is possible; but whether the system is not in itself