Presently Frank and Randall descended from the deck of the Scorcher, and strolled along the verge of the plateau.

“In every other respect,” said Randall, “the old fellow’s story has proven correct.’”

“That is true,” replied Frank, “and yet it seems hardly possible that he could be mistaken in regard to seeing the people and their towns.”

“Exactly! How, then, do you explain the discrepancy?”

“There is one way.”

“What is it?”

“Perhaps they have departed for some other part of this region.”

“Abandoned the country?”

“Just so!”

“But—what would be their reason?”