CHAPTER XXII
PRISONERS
"Do you think there is any danger of them finding us?" asked Mr. Damon, as he hurried along beside Tom.
"I'm afraid so," was the answer. "I've been worried ever since we saw Munson heading this way. But we couldn't do any differently."
"Perhaps Bill Renshaw may be able to conceal us," suggested Mr. Jenks. "Very likely he knows that Munson is on hand. Perhaps we will be safe for a while. I want to make a few more observations as to how they manufacture the diamonds, and then, with what I already know, I'll have the secret."
"And I'd like to make some scientific tests of the sides and bottom rocks of the cave," spoke Mr. Parker. "I think it will bear out my theory that the mountain will soon be destroyed."
"Well, you were right about Earthquake Island, and you may be right about this moun-
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