“Quite so; well, I can tell you it is a good deal more than five guineas that would be earned if you could put me in the way of laying my hand on his shoulder. I don't think that he is living in town. I expect he is in some quiet neighborhood; still, if he is on the road, he must have a horse somewhere. You might ask among the stables, and find out whether anyone keeps a horse there who is in the habit of going out in the afternoon and not coming back until the next day. You have plenty of time upon your hands, and it would pay you well if you could bring me the information I want.” The officer said to Mark at the end of two months: “These knights of the road don't often mix themselves up with the London housebreakers. The most likely men to be able to tell you about the doings of such a fellow would be receivers of stolen goods, but it would be dangerous to question any of them--they would be sure to put him on his guard. I will give you a list of some of them, and I should say that your best way would be to watch their places of an evening, from the time it gets dark till ten or eleven. Of course, it is just a chance. You may watch one place for a month and he may happen to go there the very day you have gone off to watch another crib. Still, there is just the chance, and I don't see that there is one any other way.” During this time Mark had been taking a lesson every evening with Needham, and had surprised his teacher with the rapidity of his progress; he had said, the very evening before, when Mark had countered him with a blow that knocked him for two or three minutes senseless: “We have had enough of this, governor; you have got beyond me altogether, and I don't want another blow like that. You had better take on Gibbons now. You are too big altogether for me, and yet you don't fight like a heavyweight, for you are as quick on your pins as I am.” Well pleased at having the day to himself and of having got clear of his work in the thieves' rookeries, Mark went the next morning to Gibbons' shop. His entry was hailed by a chorus of barking from dogs of all sorts and sizes, from the bulldog down to the ratting terrier. “Glad to see you, Mr. Thorndyke,” Gibbons said, when he had silenced the barking. “I saw Jack last week, and he told me that he should hand you over to me pretty soon, for that you were getting beyond him altogether, and he thought that if you stuck to it you would give me all my work to do in another six months.” “I finished with him last night, Gibbons, and I shall be ready to come for a lesson to you every morning, somewhere about this hour. I have brought my bag with my togs.” “All right, sir, I am ready at once; the place is clear now behind. I have just been making it tidy, for we had a little ratting last night, one of my dogs against Sir James Collette's, fifty rats each; my dog beat him by three quarters of a minute.”