“We can check that, Derek. The postmark will show the date. And the day of the chabasco will have been recorded somewhere in Trinité.”

“I never thought of that,” Derek said. He sounded much more cheerful. Charles Keene had restored his hope.

“Big day ahead of us, boys,” Biff’s uncle said now. “I’d say it was about time to hit the sack. You with me?”

Biff and Derek were. It seemed impossible to Biff that only that morning, he had been in Curaçao. It also seemed to Biff that he had just heard his uncle say, “Hit the sack,” when his uncle’s voice came to him again. This time it was, “Hit the deck!”

Morning had come. In an hour, Biff would be at the bottom of the ocean, searching for pearls.

CHAPTER XIX
Pearl Diving

“Before we go out, we’re going to have a dry run with the Scubas,” Biff’s uncle announced.

Biff, Derek, and Uncle Charlie were on the beach where the cruiser was anchored.

“Don’t know how much skin diving you’ve done, Derek—you said some—but Biff can tell you that all diving equipment must be carefully and thoroughly checked out before you go down.”

Derek paid sharp attention.