The Welshman handed him his card. The sergeant made a sign, and the police withdrew. Then the Welshman formed his men up in single file, gave the word to "March!" and led them in good order out of the surgery and down Mount Street, keeping them to the edge of the right-hand pavement. The sergeant, true to his compact, kept his men to the left-hand pavement, the bearded man walking sulkily by his side. It is now necessary to return to Jim and his movements. This had been a very hard day with the Long ’Un, who had been out and about constantly, for there was much sickness in the district. Some of Jim’s frequent emergings were witnessed by young Isaac Harris, who, as often as his duties in the shop permitted it, took up a position on his step and watched the surgery door. For, ever since Jim, before Rebecca Nathan’s very eyes, had expelled Isaac from his surgery in the manner recently described, Isaac had been thirsting for revenge. And to-day an excellent idea had entered his head. The chief of the Hooligans still looked in at the Harris emporium for odd meals, and Isaac fancied that this nice gentleman would serve as a convenient instrument in the matter of harming Dr Mortimer. Isaac knew that the Hooligans bore Jim plenty of ill-will, and would be only too pleased to get an opportunity to wreak their spite against him. And it struck Isaac that their most favourable opportunity would occur at night-time, when Jim was attending a patient in one of the narrow courts in which the locality abounded. The Hooligan leader had been in that afternoon, and Isaac had lost no time in sounding him about Jim. The Hooligan’s sentiments and hopes were expressed in brief but blasphemous terms. Now, Isaac knew what sort of metal Jim was composed of, and did not believe in his heart of hearts that the Hooligans would ever succeed in--as they elegantly put it--"outing" him; but he fancied they might be able to hustle him and do him some serious harm, and that, Isaac decided, would just suit _his_ book. He did not want them to murder Jim, only hurt him. That evening the Hooligan came in again and consumed a large meal which heartened him up considerably, and filled him with a savage desire to turn his hand against some of his fellow-beings. Kicking a policeman’s skull in would have formed a most delectable dessert to his repast. As he was leaving the shop in his usual truculent manner, he found Isaac lounging on the step. "Good evening, sir," said Isaac, smoothly. "Evening, guv’nor." Isaac gazed at the other craftily. "Our dear doctor has been busy to-day," he murmured. The Hooligan spat on the pavement. "’E’s off again--just gone to Pine Court," added Isaac, carelessly. An evil light glittered in the Hooligan’s pig eyes. "Pine Court? ’Ow d’yer know?" "Saw a kid from the court fetch him."