Frank laughed and resumed his work, and Pomp and the Mexican sent shot after shot toward the sharp-shooters who had fired at their companions.

That ended the shooting.

Frank and Barney finished their task, descended to the deck, and entered the cabin.

“Now we can storm the castle from the sky,” said Frank.

“If you can get into that building,” the Mexican remarked, “you can get the treasure I told you of.”

“We must first drive out the inmates.”

“A hard job, I fear.”

“On the contrary, it will be quite easy.”

“How so, senor?”

“We will blow the building to pieces.”