It was like riding a kicking horse, but the hardy fellow kept his hold, reached the hogshead farthest from the boat, flung the coil, and it fell short though actually touching the cask.

Reclaiming the length of cord, Whittingham, in defiance of all prudence, flung himself into the boiling sea and swam towards the coveted object.

"Come back, man! Come back!" shouted the captain.

"A shark! A shark!" roared the sailors.

Whittingham paid no heed, he reached the cask and got the rope around it. He had a cord passed round his waist, and prepared to be hauled back by it, when his awful shriek rent the air, and a groan burst from the white lips of his comrades.

A huge shark had rushed swiftly up, and taken the poor fellow's legs off at his middle. The sea was crimsoned with his blood, as his head was seen turned, with an agonised expression, at sight of the certain death come upon him. In another minute the tension of the strong hands relaxed, and the man's upper half also disappeared from sight.

Ralph hid his face, trembling with horror.

But the men knew well that this was the fate which awaited them all did the boats capsize before rescue arrived, and they redoubled their efforts to help themselves.

The fatal cask was drawn in, reddened still with the lifeblood of poor Whittingham, which had splashed all over it, and it enabled Wills and his assistants to construct a sort of oblong frame, supported at each corner by the buoyant empty vessels. Pieces of wood were laid athwart, the short way of the raft, which became safer with each fresh plank as it was affixed.

The chief difficulty was to obtain the wherewithal for making these planks and timbers secure. There was but very little rope, and only such nails as clung to the riven timbers, with a few which Wills, like all carpenters, happened to have in his pocket. The spars and planks were irregular in length and thickness, neither was it possible to rig up even a cord run around the raft, or any manner of bulwark wherewith to increase its safety.