“At the Canyon?” asked Mr. Whitney. “I don’t see how you could. It is a pretty dreary place, if you have to be there long.”

“But we weren’t at the Canyon,” put in Bob.

“So? You surprise me. But wherever you were, I bet you were in mischief. Just from the look of you two, I can see that you were up to some devilment. Besides, you’re almost boiling over with the desire to tell me about it. Come on, out with it.”

“We went through the Labyrinth Canyon,” said Jerry calmly.

This news made Steve Whitney jump out of his chair. “What!” he cried. “You went through the Labyrinth? You’re joking.”

“Not at all,” said Bob calmly. “We got tired of doing nothing and we went up the Green River and went through it.”

“But—but nobody’s ever gone through alive,” stammered the man. “I’ve always wanted to try it myself but never found the chance. How did you do it?”

“Boat partly and swimming,” returned Jerry, anxious to state the exact facts.

“But didn’t you have an awful time?”

“Oh, it wasn’t so bad,” said Bob. “Once or twice we had a little trouble but all in all it was just fun. And the reason we went was because Jerry thought there might possibly be a project there.”