“Yes.”

A light of hope lit up the villain’s face. He averted his gaze, and continued shrewdly:

“We must search for it.”

“Yes,” replied Frank, “that is the only way. But if we are to be foes all the while——”

“No, no,” cried Dooley, craftily; “we will not fight each other. It shall be agreed that whoever finds the gold there shall be a fair division.”

“Will you swear to that?”

“Yes.”

“All right,” said Frank, sternly; “but now let me impress upon you one fact. We have the best of the situation. If you attempt any treachery or go back on your agreement, I’ll exterminate the whole of you. With my air-ship I can do it.”

The rascal’s shifting gaze met Frank’s a moment. He could not help but see that the young inventor was in earnest. So he said with an affectation of servility:

“You need have no fear. I always stand by my agreement.”