“Easy enough to see,” said Dr. Perkins, starting up the Sea Eagle for the little island.

“It’s a diving helmet!” cried Frank as they drew closer to the object, “just look, the rascals must have left it there after they got the treasure out of the sunken wreck. I guess they thought that as they were so rich they need not bother with it.”

They landed on the island as disconsolate and downcast a band of treasure hunters as ever set foot on the site of a treasure trove. Abundant evidences of a camp were all about them. The ashes of a fire, and scraps of food and paper. One of these caught Frank’s attention. It was a fragment of newspaper, and what had challenged Frank’s notice was that a band of red ink had been drawn around some printing on it. Frank read the marked portion with a somewhat vague curiosity. For the moment he did not realize what an important clew he had stumbled upon. Then it rushed upon him with full force.

Ben and the others were on the shore of the island pointing down into the muddy waters of the bayou.

The earth was trampled in the vicinity, and showed plainly that the miscreants who had stolen the treasure had carried on their operations from that point of the bank.

“Down thar somewhar’ lies the wreck of the Belle of New Orleans,” said Ben, shaking his head dolefully, and pointing into the black current; “but it ain’t going to do us no good, mates. It ain’t going to do us no good; them sea skunks has got ahead of us for fair.”

It was at this point that Frank’s shout interrupted them.

“What is it?” cried Dr. Perkins.

“This paper. Come here. I think it’s a clew to where they have gone.”

They crowded about him while Frank read out from the marked paper.