"That's easy."
"Well, answer Mr. Vaughn's question," commanded the Professor.
"Why, I'd throw Ned Rector's hat into the water. If it floated that way, I'd win. If it floated the other way, Mr. Vaughn would win. In either case Ned would lose," answered the fat boy solemnly.
"You win," grinned the guide.
"He wouldn't win if he threw my hat in the water," growled Rector. "Don't let me catch you tossing my hat overboard."
"Oh, I'd see to it that you didn't catch me," jeered the fat boy.
"That's funny. Even Tad would have laughed at that," spoke up Walter.
"I am afraid Tad isn't laughing just now," said Ned.
"No, I'm laughing for him. Ha, ha, ha! Haw, haw!" brayed Stacy.
"You were speaking of getting lost," Professor Zepplin reminded the guide.