He was in the midst of one of his thoughtful moods, with Bob for his theme, and asking himself what he should do if Bob did begin to thrash him first time they were on shore; and he had just come to the conclusion that he would not let Bob thrash him if he could help it, when Bob suddenly leaped forward and hit him a round-handed sort of blow, right in the back of the neck.

This so enraged him that he forgot directly all about companionship, and the sort of tacit brotherly compact into which they had entered, and springing at his assailant he struck him a blow in the chest, which sent him staggering back.

For a moment or two Bob seemed to be beaten; then he came at him furiously, the turf was trampled and slippery, and they both went down; then they got up again, and fought away, giving and taking blows, every one of which sounded with a loud slap.

That fight seemed as if it would never end, and Dexter felt as if he were getting the worst of it, consequent upon an inherent dislike to inflict pain, and his having passed over again and again opportunities for administering effective blows. At last they joined in what became little more than a wrestle, and Dexter felt the ground giving way beneath his feet; the back of his neck hurt him terribly, and he was about to give in, when the boys began to cheer, Mr Sibery ran up with the cane, and the doctor came looking stern and frowning, while he saw Helen Grayson put her hand to her eyes and turn away.

“It’s all Bob Dimsted’s fault,” he cried passionately; and he woke up with the words upon his lips, and a crick in the back of his neck, consequent upon the awkward cramped-up position in which he had lain.

It was broad daylight, and for a few moments he was too much confused to understand where he was; but as he realised it all, and cast a quick look round in search of danger, he saw that they were hooked on to the slimy buoy, that twenty yards further there was the hull of an old schooner, against which they had been nearly capsized the previous evening, and four or five hundred yards beyond that, slowly paddling along, was their enemy, looking over his shoulder as if he had seen them, and meant to make sure of them now.

Dexter hesitated between wakening Bob and setting the boat adrift.

He decided on doing the latter, and hauling on the chain, he drew the boat right up to the buoy, followed the chain with his hands till he could touch the hook, and after some difficulty, his efforts reminding him of the night when he unfastened the chain in the boat-house—he dragged the hook from where it clung to a great rusty link, and all the time his eyes were as much fixed upon the man in the boat as upon the task he had in hand.

Clear at last, and drifting away again. That was something towards safety, and he now stepped over the thwarts and shook Bob.

Bob was too comfortable to open his eyes, and no matter what his companion did he could get no reply till he bent lower, and, inspired by the coming danger, shouted in his ear—