“How do you know? Did you stay awake to find out?”
“No, but I heard it thundering, and I called to you that you’d better put your window down, for your room faces the west and most storms come from there this time of the year. You didn’t answer so I concluded you must have been sleeping.”
“I was,” declared Jack. “Thunder, eh? I didn’t hear it.”
“It was only a rumble,” Walter said. “I didn’t stay awake longer myself than to hear that.”
“They heard it, too,” said Belle, when she and Cora had walked off by themselves.
“Yes,” agreed her chum. “But was it thunder?”
“We’re right back where we started,” laughed Belle, “arguing in a circle. Let’s forget it.”
CHAPTER XV—A NARROW ESCAPE
But though Cora and Belle agreed to drop the matter of the unexplained noise, they could not dismiss it from their minds. Several times that day Cora would notice Belle in a brown study, and on taxing her with it would be met with the statement:
“I can’t think what caused it.”