"Ay," said Captain Brand, "that's my opinion. Hark! did ye hear that?"

A roaring, rumbling sound was heard, right under their feet; the ground trembled violently.

"It is the subterranean fire of that volcano," said Harry. "I hardly think there is much danger."

He said this to quiet the fears of Mary, who turned pale and looked anxious.

"To my notion," said Turk, "it's devils a-lightin' their brimstone right under us, hopin' in that way to catch us. It's plain they're after some one among us, which I may premise by sayin' ain't me nor Harry, nor this young lass."

Brand frowned darkly.

"How know you that I'm not as good as the rest of you," said he.

"Honestly speakin', Cap, I don't think you are," exclaimed the old tar, bluntly.

"I've always led a good life," said Brand, shunning the great blue eyes of Mary.