"Ambiguous, but good sense," muttered Professor Zepplin.

"Why do you ask?" demanded Lilly.

"I wanted to know. I am a little bothered about some features of the affair," Tad answered.

Lilly regarded the Pony Rider Boy thoughtfully.

"You have something on your mind?"

"Well, yes, I have," admitted Tad.

"Out with it. It doesn't do to hold in too much at a time like the present."

"You know I went out on that trail this afternoon, Mr. Lilly?"

"No, I didn't know it. To which trail do you refer?"

"The bear trail we will call it."