CHAPTER IV.

"WHERE IS HE?"


"Professor!" hailed Dick, at the top of his lungs.

"Professor!" bawled the farm hands.

The red-faced farmer himself regarded the boys quizzically.

"What sort of a chap is this professor of yours?" he asked with an odd
intonation.

"He's a geologist," replied Dick. "Why?"

"Oh, I thought he might be a conjurer," was the rejoinder. "He seems
to be pretty good at hiding himself."

"Hark!" exclaimed Jack suddenly, standing at pause and listening
intently.

"What's up?" demanded Dick, instantly on the alert, too.

"I heard something. It sounded like----"

"There it is again," cried Tom.