"What was he doing when you saw him?" asked Sandy.

"Poking around in worked-out chambers with a pick!"

"Did he see you?"

"You bet he didn't! Do you think we're going to walk six miles in from the country in order to dodge the detective, and then let him run across us in the mine?"

"Yes, but what's he looking for?" insisted Sandy.

"That, me son," George replied with a wink, "is locked in the bosom of the future! We may be able to find out what he's doing here when we find out who struck Billy Patterson."

"Don't get gay now!" grinned Sandy.

"Well, if you insist upon it," George continued with a smile, "Ventner was digging in refuse heaps for something which he didn't find!"

"Did you meet the boys who stole our provisions?" was the next question. "I wish you'd got hold of them!"

"We are certain that one of them passed us while we were returning,"
George answered.