“Bravely done, Harry,” cried Frank, grasping his younger brother’s hand in a firm grip which you may be sure was heartily returned.

“That’s all right. All’s well that ends well”—replied Harry,—with a grin, “it was just a bit of bluff, Frank, but it worked.”

“What did you do?” demanded Frank.

For reply Harry pointed to the brightly-polished cylinder of the searchlight that, detached from its socket lay on the floor.

“You heard me call, ‘Lookout for the bomb!’ or words to that effect?” he inquired.

“Yes,” replied Frank, puzzled, “but those fellows don’t understand English.”

“Well, they understood what it meant when they saw me raise that searchlight over my head as if I was going to chuck it down and blow them all to Kingdom Come,” replied Harry, cheerfully.

CHAPTER XV.

THE BOYS DISCOVER THE TOLTEC’S “SESAME.”

They arrived at camp as day was breaking and found everything just as they had left it. The first thing to be done was to get out the medicine chest and bandage Billy’s wounded head after antiseptics had been applied to it. It was only a flesh wound but the weapon,—most probably the butt-end of a rifle,—with which he had been struck, had inflicted a glancing cut that was painful. After a hasty breakfast the boys turned in and slept like tops till late afternoon.