On their ears again and again would ring the fearful cry, "There goes Kennedy's spies;" and it required the most consummate acting and self-possession to allay the suspicion. Often on a single word or act hinged their very lives. Some of these men were in the mob that made the first attack on Mayor Opdyke's house, and while apparently acting with it, learned of the intended movement down to police head-quarters, and at once telegraphed the fact, which enabled Carpenter to prepare for them, and give them the terrible beating we have described. At the burning and sacking of different buildings they were present, and often would follow unnoticed the ringleaders for hours, tracking them with the tireless tenacity of a sleuth hound, until they got them separate from the crowd, and then pounce suddenly upon them, and run them into the nearest station. The lawlessness that prevailed not only let loose all the thieves and burglars of the city, but attracted those from other places, who practised their vocation with impunity. To lessen this evil, the detectives one night quietly made visits to some half a dozen "lushing cribs," as they are called, in Eighth and Fourteenth Streets, and seized about thirty noted thieves, burglars, and garroters, and locked them up for safe-keeping. They also warned the negroes of threatened danger, and directed them, to places of safety; and in case of emergency acted as guides to the military in their operations. In short, they were ubiquitous, indefatigable, and of immense service. They played the part of unerring pointers to the commissioners, telling them when and where to strike; yet strange to say, such was their skill, their ingenuity, and exhaustless resources, that they all escaped being assaulted, save one named Slowly. He was passing through the very heart of the riotous district, in Second Avenue, when some one who had evidently been once in his clutches, recognized him, and pointing him out, shouted "Detective!" Instantly a rush was made for him, and he was knocked down, and kicked and stamped upon. Regaining, with a desperate effort, his feet, he sprang up the steps of a house, and fought his assailants fiercely, till the lady of the house, seeing his perilous situation, courageously opened the door and let him in, and then bolted and barred it in the face of the mob. Through some strange apprehension, the baffled wretches, though they howled, and swore, and threatened, did not force an entrance, and he escaped.