"This is a shade awkward," said Dunstable thoughtfully. "You must have tied it up jolly rottenly. It must have slipped away and gone down-stream. This is where we find ourselves in the cart. Right among the ribstons, by Jove. I feel like that Frenchman in the story, who lost his glasses just as he got to the top of the mountain, and missed the view. Altogezzer I do not vish I 'ad kom." "I'm certain I tied it up all right. And--why, look! here's the rope still on the pole, just as I left it." For the first time Dunstable seemed interested. "This is getting mysterious. Did we hire a rowing-boat or a submarine? There's something on the end of this rope. Give it a tug, and see. There, didn't you feel it?" "I do believe," said Linton in an awed voice, "the thing's sunk." They pulled at the rope together. The waters heaved and broke, and up came the nose of the boat, to sink back with a splash as they loosened their hold. "There are more things in Heaven and Earth--" said Dunstable, wiping his hands. "If you ask me, I should say an enemy hath done this. A boat doesn't sink of its own accord." "Albert!" said Linton. "The blackguard must have followed us up and done it while we were at tea." "That's about it," said Dunstable. "And now--how about getting home?" "I suppose we'd better walk. We shall be hours late for lock-up." "You," said Dunstable, "may walk if you are fond of exercise and aren't in a hurry. Personally, I'm going back by river." "But--" "That looks a good enough boat over there. Anyhow, we must make it do. One mustn't be particular for once." "But it belongs--what will the other fellow do?" "I can't help _his_ troubles," said Dunstable mildly, "having enough of my own. Coming?" * * * * * It was about ten minutes later that Sheen, approaching the waterside in quest of his boat, found no boat there. The time was a quarter to six, and lock-up was at six-thirty. XIII DEUS EX MACHINA It did not occur to Sheen immediately that his boat had actually gone. The full beauty of the situation was some moments in coming home to him. At first he merely thought that somebody had moved it to another part of the bank, as the authorities at the inn had done once or twice in the past, to make room for the boats of fresh visitors. Walking along the lawn in search of it, he came upon the stake to which Dunstable's submerged craft was attached. He gave the rope a tentative pull, and was surprised to find that there was a heavy drag on the end of it. Then suddenly the truth flashed across him. "Heavens!" he cried, "it's sunk." Joe Bevan and other allies lent their aid to the pulling. The lost boat came out of the river like some huge fish, and finally rested on the bank, oozing water and drenching the grass in all directions. Joe Bevan stooped down, and examined it in the dim light.