The Nomad was suddenly caught, as if by hands bent on causing her dissolution, and hurtled straight into the cleft between the islands. Nat, hardly conscious of what he was about, directed her course so that the craft was not instantaneously dashed to bits against the side of the cliffs. Joe, too alarmed to utter a word, simply clung tight to the rail. Below, in the engine-room, Ding-dong Bell was thrown from his feet and smashed up against a steel stanchion.

The blow knocked him senseless. And so, with her engineer unconscious, another member of her crew almost useless from fright, and only one guiding spirit on board her, the Nomad hastened forward into what seemed certain annihilation.

Within the cleft it was black as night. The angry seas that boiled and gnashed between the steep walls, for an instant completely hid the Nomad from view. But presently she gallantly emerged, fighting like a live thing for her life.

The wind, compressed within those narrow confines, blew with a force and fury almost incredible except to those who have passed through a South Pacific storm. It would have been impossible to cry out and make one’s voice heard. The most powerful shout would not have been audible a foot away. The situation of the Motor Rangers appeared to be almost desperate.

“Can she last out? Can she possibly stand this terrific battering?”

Such were the thoughts that galloped through Nat’s excited brain. He rang the electric signal for “more power,” but no response came from the engine-room, where Ding-dong lay senseless beside his motors.

Then he turned about to look for Joe. Now that his eyes had grown used to the darkness it was possible to see—as one sees on a night when the moon is obscured by heavy clouds. The young captain’s heart leaped into his mouth as his eyes pierced the obscurity.

Except for himself, the bridge was empty of life.

Joe Hartley had vanished!

“Swept overboard!” shot through Nat’s brain.