Suddenly the man who had been battling for life in the glare of the burning launch was seen to throw up his hands, and, with a wild cry of despair on his lips, which was echoed by his friends on the Nomad, he vanished.

“Good heavens!” cried Joe in an agonized voice. “Has Nat sacrificed his life in vain?”

He scanned the waters for a glimpse of his chum, but not a sign of the plucky young leader of the Motor Rangers rewarded him.

Like the man he had set out to save, Nat Trevor, too, was apparently engulfed by the seething waters.

CHAPTER VI.

SAVED FROM THE SEA.

Joe, till the last day of his life, never forgot the ensuing period of time. It appeared to be years that he stood there amidst the pandemonium of the storm, with his nerves on blade edge and his heart beating suffocatingly with anxiety. The Nomad struggled and plunged like a wild horse, and it required all his muscular strength to hold her within control.

A sudden shout from Nate caused him to look up hopingly.

“There! There they both are!” yelled the sailor excitedly.

The next instant Joe, too, saw them. Right ahead of the Nomad was Nat, apparently buoying up the limp form of Dr. Chalmers on the life-ring which the latter had missed, but which a lucky accident had brought within Nat’s grasp at the very instant almost that Dr. Chalmers sank. Nat had seen that the only chance of saving him was to dive swiftly after him and trust to luck. He had done so, and on coming to the surface had managed to grasp the life-ring. All this, however, they did not know till afterward.