“More as though it came up from the ground,” returned Ruth, in the same low voice. “Do you suppose we are standing on the roof of a cavern, Chess Copley?”
“It might be,” agreed the young fellow. “But if it is a cavern, where under the sun is the mouth of it? How do they get in or out? It beats my time!”
Ruth quickly acknowledged that the mystery was beyond her comprehension. The sing-song sounds—for such they seemed to be—went on and on, meaningless for the two listeners, who could not distinguish a single word.
“Think that’s your King of the Pipes?” asked Chessleigh finally.
“I don’t know. If it is, there must be something more the matter with him than Willie says there is. He sounds crazy—that is the way it sounds to me.”
CHAPTER XX
A FAILURE IN CALCULATION
“What shall we do now?” asked Ruth finally, and in a whisper.