The passengers and crew of the Ark, with expressions of anxiety that would have pleased their subject if he had heard them, watched the Jules Verne disappear into the depths beneath.

The submersible was gone so long that the anxiety of those aboard the Ark deepened into alarm, and finally became almost panic. They had never before known how much they depended upon Cosmo Versál.

He was their only reliance, their only hope. He alone had known how to keep up their spirits, and when he had assured them, as he so often did, that the flooding would surely recommence, they had hardly been terrified because of their unexpressed confidence that, let come what would, his great brain would find a way out for them.

Now he was gone, down into the depths of this awful sea, where their imaginations pictured a thousand unheard-of perils, and perhaps they would never see him again! Without him they knew themselves to be helpless. Even Captain Arms almost lost his nerve.

The strong good sense of Amos Blank alone saved them from the utter despair that began to seize upon them as hour after hour passed without the reappearance of the Jules Verne.

His experience had taught him how to keep a level head in an emergency, and how to control panics. With King Richard always at his side, he went about among the passengers and fairly laughed them out of their fears.

Without discussing the matter at all, he convinced them, by the simple force of his own apparent confidence, that they were worrying themselves about nothing.

He was, in fact, as much alarmed as any of the others, but he never showed it. He started a rumor, after six hours had elapsed, that Cosmo himself had said that they would probably require ten or twelve hours for their exploration.

Cosmo had said nothing of the kind, but Blank's prevarication had its intended effect, and fortunately, before the lapse of another six hours, there was news from under the sea.

And what was happening in the mysterious depths below the Ark? What had so long detained the submersible?