“The radio outfit, Dad. Surely we can do something with that.”

Mr. Hampton nodded quickly,

“Good, Jack, good. There must be a way to use it effectively.”

Michac, who had not understood the rapid interchange of remarks, looked inquiringly at Mr. Hampton.

“Will you come with us to the battlement, Senor?” Mr. Hampton said, slowly, in Spanish. “Prince Huaca knows of further and greater magic, and left sentries on guard there last night over it.”

“I heard a strange tale from those men,” said Michac. “For, yes, I found them there upon my inspection of the fortress during the night. Willingly will I accompany you.”

Jack interposed.

“But first, Dad, perhaps Michac ought to round up his escort and prevent them from demoralizing the fortress troops with wild tales of what occurred here.”

“Right,” said Mr. Hampton, and turning to the young nobleman, he communicated Jack’s suggestion. The other nodded.

“Await me.”