“Quite so. I argued that the launch must be no great way off, in spite of its invisibility. I then put myself in the place of Small, and looked at it as a man of his capacity would. He would probably consider that to send back the launch or to keep it at a wharf would make pursuit easy if the police did happen to get on his track. How, then, could he conceal the launch and yet have her at hand when wanted? I wondered what I should do myself if I were in his shoes. I could only think of one way of doing it. I might hand the launch over to some boat-builder or repairer, with directions to make a trifling change in her. She would then be removed to his shed or yard, and so be effectually concealed, while at the same time I could have her at a few hours’ notice.”

“That seems simple enough.”

“It is just these very simple things which are extremely liable to be overlooked. However, I determined to act on the idea. I started at once in this harmless seaman’s rig and inquired at all the yards down the river. I drew blank at fifteen, but at the sixteenth—Jacobson’s—I learned that the Aurora had been handed over to them two days ago by a wooden-legged man, with some trivial directions as to her rudder. ‘There ain’t naught amiss with her rudder,’ said the foreman. ‘There she lies, with the red streaks.’ At that moment who should come down but Mordecai Smith, the missing owner? He was rather the worse for liquor. I should not, of course, have known him, but he bellowed out his name and the name of his launch. ‘I want her to-night at eight o’clock,’ said he,—‘eight o’clock sharp, mind, for I have two gentlemen who won’t be kept waiting.’ They had evidently paid him well, for he was very flush of money, chucking shillings about to the men. I followed him some distance, but he subsided into an ale-house: so I went back to the yard, and, happening to pick up one of my boys on the way, I stationed him as a sentry over the launch. He is to stand at water’s edge and wave his handkerchief to us when they start. We shall be lying off in the stream, and it will be a strange thing if we do not take men, treasure, and all.”

“You have planned it all very neatly, whether they are the right men or not,” said Jones; “but if the affair were in my hands I should have had a body of police in Jacobson’s Yard, and arrested them when they came down.”

“Which would have been never. This man Small is a pretty shrewd fellow. He would send a scout on ahead, and if anything made him suspicious lie snug for another week.”

“But you might have stuck to Mordecai Smith, and so been led to their hiding-place,” said I.