He thrust up the heavy cover of the box and cocked his ear to listen for near-by sounds. There was considerable hammering and boisterous talk going on, the sound of which he caught from moment to moment. But it was mostly smothered in the roar of the waves and the shrieking of the wind.

They were very near the surface of the boisterous sea. He heard the bursting of a wave below the airship and the spray of it, tossed high in the air, swept across the structure and showered him as he crouched under the open box lid. In a minute or two now, the Zeppelin would be a hopeless wreck.

It came, indeed, more quickly than he had apprehended. There was a sudden dip, and the craft was swerved half around with a mighty wrench of parting stays and superstructure. A wave dashed completely over the platform. He shut the cover of the box to keep out the water.

The next few minutes were indeed disastrous ones. He was in a sorry situation. He did not know what was happening to the other castaways, but he felt and heard the frame of the great airship being wrenched to pieces by the ravenous sea.

The envelope boomed and tore at the frame for freedom. At last it must have been wrenched free by the wind, and the sound of its booming and clashing gradually drifted away. The box he was in rocked and pitched like a small boat in the sea. He ventured to look out again, clearing his eyes of the salt spray.

It was already evening. There was a lurid light upon the tossing waves. Near him was a mass of twisted framework and a barge-like hulk that rode high. Upon it he saw clinging several wind-swept figures.

Then the sea tore the bow of the forward deck of the Zeppelin entirely free from the rest of the structure. Tom Cameron went drifting off to leeward in his uncertain refuge.

The tumbling sea separated him from the Germans. Perhaps it was as well.

As his raft rose upon a wave he looked back into the deep trough and saw the remains of the airship turning slowly, around and around, as though being drawn down into the vortex of a whirlpool. His lighter craft shot downward into the next valley, and that was the last glimpse Tom had of the wrecked Zeppelin and its crew.

CHAPTER XXII—ADRIFT