"I tell you it hasn't! Are you always going to dispute with me? Now get out of here, I want to do my work," and the mate fairly thrust Nat out of the room, and locked the door.

"I'm sure that was my father's pocketbook," murmured the boy, as he walked slowly along the deck. "How did the mate get it? I wonder if he knew my father? There is something queer about this. I must tell Mr. Weatherby."

Nat would have thought there was something exceedingly queer about it, if he could have seen what the mate was doing just then. For Mr. Bumstead had taken the wallet from his pocket, and, with his knife, he was carefully scraping away the gold letters that spelled the name of James Morton—Nat's father.

CHAPTER VII
NAT HAS AN ACCIDENT

Nat vainly tried to recall some of the circumstances connected with his father's death, that would give him a clue to the reason why the mate had Mr. Morton's pocketbook. But the trouble was Nat could remember very little. The sad news had stunned him so that he was in a sort of dream for a long time afterward.

The body had been recovered, after several days, but there was nothing in the pockets of the clothes, as far as Nat knew, to indicate that Mr. Morton had left any money, or anything that represented it. Yet Nat knew his father was a careful and saving man, who had good abilities for business.

"If I wasn't sure it was his pocketbook, I would say that there might be plenty of such wallets, with the name James Morton on them," thought Nat. "The name is not an uncommon one, but I can't be mistaken in thinking that was poor dad's wallet. How the mate got it is a mystery, unless he took it from my father. Or, perhaps dad gave it to him, yet I don't believe he would do that either, for he once told me the wallet was a present from mother, and I know he would not part with it. I must consult with Mr. Weatherby."

Nat did not get a chance to speak to the pilot about the matter until the next day. Mr. Weatherby looked grave when he heard our hero's story.

"Are you sure you weren't mistaken?" he asked.