Broad awake in a jiffy, he aroused the others, going from the floor sleepers to the bunks. Dr. Perkins, Mr. Sterrett and the latter’s friend were awakened in turn, and it was not till then that Ben noticed that Duval’s bunk was empty.

“Good fer him,” he said to himself warmly, “the young chap has started to turn over a new leaf by gittin’ out early. I’ll take a turn outside afore breakfast and see if I can find him.”

But Duval was not about the workshop, nor did Ben’s calls summon him to breakfast. It was not till that instant that an ugly suspicion flashed into Ben’s hitherto unsuspecting mind. Without saying a word to the others he hastily drew out his wallet and, withdrawing to a corner of the hut, examined its contents. Instantly his suspicions were verified.

The plan of the location of the wreck of the Belle of New Orleans was missing!

Stifling his anger as well as he could, Ben hastened to the beach. As he had suspected the moment he found the plan missing, the small skiff was gone. What had happened was as plain as print to Ben now. Young Duval had waited till all in the hut were asleep, then he had stealthily crept from his bunk, recovered the plan he had given to Ben, and had decamped in the small boat.

“Waal, the dern scallywag!” burst out Ben, as he stood on the beach in the first shock of his discovery.

In his anger he shook his fist at the strip of sea between the island and the mainland to which, he did not doubt, Duval had crossed in his flight.

“The—the—precious scamp!” he continued, his bronzed features working, “and I trusted him as I would have trusted his dad.”

Shaking his head, Ben slowly made his way from the beach back to the hut. He said nothing of his discovery during breakfast, but after the meal he found a pretext for drawing Dr. Perkins to one side. To him he communicated what had occurred.

“A good riddance of bad rubbish,” said Dr. Perkins when Ben, whose voice shook with anger, had concluded his story; “we are cheaply rid of him, Ben.”