“Swim to them!”

“Certainly. Why not?”

“What! through the midst of those monsters who have just devoured our comrades under our very eyes?”

A flash of lightning at that instant lit up the countenance of Costal, which exhibited an expression of profound disdain.

“Have I not just told you,” said he, “that I am perhaps the only man who could pass among these sharks without the least danger? I have done it a hundred times out of mere bravado. To-night I shall do it to save our lives.”

The thought of being left alone caused the Captain a fresh alarm. He hesitated a moment before making a reply. Costal, taking his silence for consent, cried out—

“As soon as I have reached one of the barges I shall cause a rocket to be sent up as a signal that I am aboard. Then you may expect us to come this way; and you must shout at the top of your voice, in order that we may find you.”

Don Cornelio had not time to make answer. On finishing his speech the ci-devant pearl-diver plunged head foremost into the water.

The Captain could trace a luminous line as he swam for some seconds under the surface; and could also see that the fierce denizens of the deep—as if they recognised in him a superior power—had suddenly glided out of his way!

Don Cornelio saw the intrepid swimmer rise to the surface, at some distance off, and then lost sight of him altogether behind the curling crests of the waves. He fancied, however, he could hear some indistinct words of encouragement borne back by the wind. After that, the only sounds that reached his ear were the hoarse moanings of the surf, and the ominous plashing of the waves against the quivering timbers of his canoe.