"You must remember, man. You must, I say!" he snapped, in tones that cut like the crack of a whip. "Think! think! our lives depend upon it!"

"If I knew, I would tell you," murmured the man; "but I don't. I don't remember."

A stillness like death itself settled on the occupants of the cabin. Barton had accomplished his insane purpose only too well, it seemed.


CHAPTER XXVI.

WHICH WILL WIN?

Rob's idea was a simple enough one. With his knife he would cut bundles of branches and then bind them to the sides of the boat with the rope. This would at least keep the crazy craft afloat and offer him a means of reaching the shore.

He set to work at once with great enthusiasm, and by dusk his strange-looking boat was ready to be launched. By placing round branches under it for rollers and using another branch as a lever, he soon succeeded in getting it into the water. But it was hard work, and he paused to eat some of his canned beef before going any further.

To his huge delight the boat, though lopsided and half full of water, was buoyed up by the branches, and he had no doubt that he could navigate her with the oars. As soon as he had finished his unappetizing meal, Rob clambered on board his "ark," as he mentally called her, and thrust the oars into the rowlocks. The boat was very heavy, and owing to her waterlogged condition pulled very hard. Worse still, Rob encountered a current that carried him toward the other island, the one he had left that morning; and even worse, a fact he presently perceived, his craft was being carried around a point, on the opposite side of which he could see the glow of a fire against the night sky; for by this time it was dark. Rob was heartily glad that this was the case, for he knew that the fire must be that of the rascals who had abducted him, and in the darkness he might slip by them unnoticed.