“So that’s what it is!” exclaimed Jack. “This is my first experience.”
“I heard it once, though distantly,” said Walter.
“Listen!” cautioned Cora.
The noise seemed to increase.
“Say, that is curious!” commented Mr. Floyd. “I never noticed that before. Where does it come from?”
Hardly had he spoken than the rumbling ceased, and there came a sharp crash, as though wood had broken somewhere.
“The chimney’s fallen!” cried Mrs. Floyd.
“Nonsense, Eliza,” said her husband. “The crash would be up on the roof if the chimney toppled over. Besides, there’s no wind, and the noise didn’t come from above, it came from—down there!”
He pointed to the floor of the living room, which was of bare boards, with rugs here and there.
“That’s right!” cried Jack. “The crash was below us. It’s under this bungalow somewhere. Up with the floor boards! We’ll get at the bottom of this!”