“Simply by observing a few natural phenomena in connection with the valley.”
“Ah!”
“I will show you more clearly to-night.”
“Then I will follow your directions to a dot. I suppose that by to-morrow we shall have the counterfeiters all in our power.”
“I think so.”
The captain went back to his men.
He proceeded to follow Frank’s instructions carefully.
Men were placed at intervals along the plateau and with rifle shot completely around the valley.
Unless there was some unknown exit by means of a secret cavern, Frank could not see how the counterfeiters could escape.
The day was spent in overhauling and exploring Mason’s den.