But, as has been said before, Bob was not lacking in what the boys of the ranch called “sand.” He shut his teeth firmly together, and made up his mind that no matter what was required of him, he would do his level best to fill the bill. Frank must have no occasion to feel ashamed of his Kentucky chum.

Besides, if this bold robbery were let go unpunished, it would undoubtedly serve as a bait to tempt others to try the same game. Consequently the rich gold mine must soon become an unprofitable business. And his father had a heavy interest in the successful working of the Cherry Blossom.

He began to speculate as to how they ought to manage so as to take the pair of scoundrels by surprise. Two of them might jump in through the open door, which was on the side of the cabin opposite the window, and thus uphill; while the other could lean through the window, and call upon the men to throw up their hands.

Or perhaps Frank might think it worth while to hang around a bit. The men looked dead tired, and would have to lie down soon. While they slept they might be taken by surprise, and captured the more easily.

So Bob was weaving fancies as he knelt there, and glued his eye to his crack between two logs. Frank was alongside, and, just beyond, Mr. Riley occupied himself in much the same fashion.

It was while the Kentucky boy was trying to figure upon the best plan of action, just to see how near he could come to what must be passing in Frank’s mind, that he became aware of a certain fact that seemed to alter conditions completely.

The window was over on the left, but plainly seen from his peep-hole. He chanced to glance that way, possibly his eye being attracted by some slight movement, Bob never knew. And to his utter astonishment he discovered a human face thrust cautiously up above the sill, while a pair of keen eyes ranged around the interior of the lone shack on the hillside!

CHAPTER XVIII
“WHEN GREEK MEETS GREEK!”

“Hush!”

Frank’s hand gripped Bob’s arm even as this warning hiss sounded in his ear. And Bob knew that his chum must have caught sight of that face at the same time he did. Undoubtedly Frank had felt a sudden fear lest the other call out, or in some other way betray their presence. And he wished to give warning, so that Bob might control his feelings.