"Quick!" cried Dave. "Or it will be all up with us!"
Father and son ran for the diving bell.
But now the demons saw them and the roar increased.
Soon fully fifty of the ferocious creatures were leaping and swimming toward the mound.
Their sharp teeth clicked together as if anxious to bury themselves in the bodies of the human beings.
With all haste Amos Fearless and Dave got into the diving bell. But before they could close the door one of the demons was upon them.
He caught the old diver by the head, intending to pull that member from the rest of the body.
Dave's heart leaped into his throat, yet his presence of mind did not desert him.
Raising one of the submarine guns he blazed away and caught the monster of the deep straight in the mouth and throat.
Mortally wounded, the demon fell back, one arm still within the doorway of the diving bell.