[CHAPTER IX.]
A MOMENTOUS INTERVIEW.
"What can you compare the sound to?" asked Jack.
It was the next morning, and Ralph was relating his experiences.
"Well, it sounded like some one 'tap-tapping,' as well as I can explain it," replied Ralph.
"Whereabouts?" asked Walt, leaning forward from the interested circle.
"I don't know. It seemed to come from everywhere at once."
"But it stopped right off when you hollered?" asked Pete.
"Yes. I didn't hear another sound."