“Shut down on your port engine; come full speed ahead on your starboard!”

Ralph had seized the flexible speaking-tube and roared the command down it.

“Jump now!” he added, as Persimmons’ “Aye! aye!” came back to him.

It was the only chance of saving the River Swallow from annihilation. By stopping one propeller and coming ahead on the other, Ralph hoped to be able to aid the rudder enough to swing the River Swallow’s bow outward from the rock.

Malvin paused by the rail. He had apparently been in the act of casting himself into the waters that boiled and seethed alongside. But Ralph had no time to notice the man now. All that he had eyes to see was the towering black buttress of rock ahead of them, against which it appeared that nothing short of a miracle could save the River Swallow from being splintered.

Young Ware, white-faced and tense, stood by Ralph’s side. Like Ralph, he sensed the full measure of the danger confronting them. Yet it spoke volumes for his pluck that he did not utter a sound after that first startled exclamation had escaped him, when the Big Nigger swung into the search-light’s vivid circle of white light. As for Persimmons in the engine room, he knew that some emergency must be confronting them. Yet he did not dream of deserting his post. Then the young skipper’s voice came down the tube once more.

“Get on a life preserver and come on deck. Quick! It may be life or death!”

The River Swallow headed straight for the Big Nigger. Ralph, every nerve and muscle in his active body strained to the breaking point, exerted every effort at his command to stave off the apparently inevitable crash. He knew that he had done all he could to avert the disaster that threatened to be swift and annihilating. All that was left to do now was to await the issue. Suddenly a sharp exclamation escaped Persimmons’ lips, and an instant later it was echoed by the others whom the young engineer had joined on the bridge.

“She’s swinging out!”

It was true. Out of the grasp of the rapids a boy’s skill had snatched victory against what had appeared to be overwhelming odds.