"I could make better time swimming," he mused, raising his head a little and gazing longingly at the shore that now seemed farther off than before, "if I only dared. I don't mean that; I do dare, but it would not be prudent. I want to get to the mainland, and I think my present method is the best one to get me there. Well, I must start the engines going again," decided the lad, grinning at his own humor.

Had any one chanced to be looking in his direction from the shore, that person probably would have thought he was gazing upon some strange creature from the deep, for Steve was making the water foam all about him. His head and the end of the board were all that were visible above the surface. Once he paddled so fast as to cause him to lose his balance. His raft turned turtle, landing Rush on his back in the water. Laughing almost gleefully at his own misfortune, the lad, in a few swift strokes, regained the door.

"That was just so much effort wasted," he remarked. "I must remember that I am not running a race. I ought to be in pretty good trim for one, though; if I get through with this one I shall be fit for most any kind of an old race that I come across."

For the rest of the journey Steve made no attempt to spurt. He paddled along steadily, making slow but sure progress toward the goal on which his eyes were continually fixed.

The sun was at its zenith when, slipping from the board, he found solid rock under his feet. Steve tried to shout, but he was too worn to raise his voice. He clung to the door until it grounded with a grating sound on the beach. Steve lay there for a few minutes. Then he staggered to his feet, making his way up the beach a few feet from the water, there to throw himself on the ground exhausted.

For nearly two hours he lay resting, having fallen into a deep sleep. Then he awakened, sat up, resting his head in his hands for one last little wink, the wink that was to give the lad the strength and courage to take up his journey.

"Hello, what's the matter?"

Rush started up suddenly. He saw before him a boy somewhat younger than himself, dressed in rough clothes. The boy was carrying part of a fish net.

"Say, I'm glad to see you, and don't you forget it," exclaimed the Iron Boy, striding forward and grasping the hand of the other lad, much to the latter's astonishment. "Who are you?"