The cords were produced and the man, who had now ceased to struggle, was tightly bound. He uttered not a word, but he smiled grimly when Mr. Damon remarked:
"I guess I'll go back in the storeroom, Tom, and see how much food he ate."
"Oh, I guess he didn't take much," declared the lad. "He wasn't there long enough."
"Well, Farley Munson, so it's you, is it?" asked Mr. Jenks, as he surveyed the prisoner.
"Do you know him?" asked Tom, in some surprise.
"He was in with the diamond makers," said Mr. Jenks. "He was one of those who took me to the secret cave. But it will be the last time he ever goes there. How high up are we, Tom?"
"About two miles. Why?"
"I guess that will be far enough to let him fall," went on the diamond seeker. "Come on, Mr. Damon, help me throw him overboard!"
"You—you're not going to throw me over—with the airship two miles high; are you?" gasped the man.
"Will you tell us what we want to know, if we don't?" asked Mr. Jenks.
"What do you want to know?"
