Then came furious activity. The door fell shut again, and the ship shot off at great speed. Hemmy felt sure that they were advancing to again attack the NX-1, and at once began to try to reach his comrades through radiophone. He knew that Wells would come back.

Finally he caught a human voice, and heard the NX-1's radio operator shout to the commander that he, Bowman, was alive and calling. But when he tried to speak further, the American craft's radio was silent.

And then, in the octopi submarine, had come a soft glow of violet....

Was it a more deadly weapon than the paralyzing ray? In great suspense the prisoner waited. Silence—silence! Horrible doubts beset his mind. Was Keith refraining from firing his torpedoes because he, Bowman, was on board the enemy boat? The thought stung him. He tried desperately again to reach Wells; but there was no answer. Were the Americans dead?

Age-long minutes passed. Then the exit port opened and several metal-clad octopi swam out. Hemmy had a glimpse of the NX-1 lying silent and apparently lifeless on the sea-floor, a gaping hole in her bow!

As if to taunt him with the sight, the creatures left the round door open, and presently Bowman beheld the octopi open the NX-1's starboard exit port and enter. Later the port swung open again, and he saw the monsters emerge, each gripping several men clad in yellow sea-suits! That they were dead, or victims of the ray, was obvious from the way they limply dangled.

The exit port closed, and darkness filled the octopi ship. Hemmy Bowman panted with the futile effort to break his bonds.

"You devils!" he yelled in blind rage, exhausted. "Why don't you take me with them? Take me! Take me, damn your stinking hides!"