He groped for some theory to account for a maniac on a deserted schooner in these desolate seas. No doubt if a solitary man were left in these terrible painted seas he would go insane. Madden regretted that he had not searched the Minnie B more thoroughly when he had the opportunity.

Similar thoughts evidenly played in Greer's mind, for presently he puffed out, between oar strokes: "Did you bring along a pistol, sir?"

"No, but there are two of us."

"They say they are tremendously stout, sir."

"We can use our oars; they'd made good clubs."

"I'm with you, sir."

By this time they had entered a long S-shaped rift that Madden recalled led straight to the schooner. By glancing over his shoulder, the American saw its two curving strokes drawn in pale light against the dark field of seaweed. As they drew nearer, wild notions of what they might encounter played through Madden's mind. What would be the outcome of this fantastic adventure?

The dinghy was moving down the middle of the long "S" when a dull noise from the schooner caused both oarsmen to look around. Such an extraordinary sight met their eyes that they ceased rowing completely, and stood up in the boat to stare at their goal.

The Minnie B no longer lay at rest. Some strange and mighty convulsion was taking place in the schooner. The lights still played about the vessel, but her whole prow rose slowly out of the sea, while she settled heavily by the stern. The most unexpected thing in the world was happening.

The Minnie B was foundering!