In his despair the lad forced himself forward, and instead of the head of the heavy club, it was the man's arm which struck him across the shoulder, and the next moment they were thrown by the rising of the stern headlong amongst the struggling crowd as the canoe filled. Then all was darkness and confusion as the lad felt himself dragged down lower and lower, till it seemed as if he would never rise again. Moments are changed to minutes at such times as these, but prolonged as the agony seemed, he was soon at the surface once more, panting for breath and beating the water like a drowning dog. But coolness came with the strong desire for life, and he now struck out bravely as he saw the water about dotted with the black heads of his enemies, one and all swimming for the floating wreck of their canoe, whilst the yacht was far away, and Jack's courage became despair as he kept on swimming slowly, better than he could have believed, so as to keep himself afloat. "That's the way, Mr Jack, sir," came from behind him; "and you said you couldn't swim." "Ned," gasped the boy, turning in the direction of the sound, and his slow, steady strokes became on the instant fast and wild. "Ah, don't do that!" cried Ned, swimming alongside. "Slow and steady, sir. Don't wind yourself. There, it's all right; I could keep you up, but I want you to try yourself. Strike out as I told you last time we bathed. Slow and steady. Let your legs go down as far as they like. Never mind if the water comes right up to your mouth; lay your head sideways and screwed round so that you can look over your right shoulder, and rest the back of it on the water. That's the way. Think you're having a lesson in swimming, and do just as I do. See? We only want to keep afloat till a boat comes from the yacht to pick us up. Well done, sir. This is the best lesson in swimming you ever had." Jack took stroke for stroke feebly enough, and kept well afloat, but he felt all the time that if Ned were not at his side he would have begun to strike out again in frantic despairing haste, wearied himself in a very short time, and gone down. "Man never knows what he can do till he tries, sir," said Ned cheerily. "It's all right. Just keep your mouth above water while you take a good long breath, and then shut it again. Lower you are the easier you float. When you're tired you shall turn on your back, and I'll guide you."