“I suppose they had some kind of an old hut here-abouts in which they did the work?”
“They had a cave—a most wonderful cave it was said to be. That cave had never been fully explored, and—— By Jove!”
Frank interrupted himself with the exclamation, a strange look having come to his face.
“What is it?” asked Harry.
“I have an idea.”
“Put us on.”
“That cave, my boy—that cave!”
“What about it?”
“It is said that Carter Morris, the queer old miner, lives in some sort of an underground place.”
“That’s right!” cried Rattleton, catching Frank’s meaning, and growing excited.