"How long have we got to stay cooped up in this half cave?" demanded
Stacy.
"All night, maybe," answered Dad.
"Good night!" said the fat boy, Slipping down until he had assumed a sitting posture. He lay down and was asleep in a short time. Stacy woke with a start when another giant rock smote the wall just above their cave, exploding into thousands of pieces from the violent contact.
"Stop that noise! How do you suppose a fellow's going to sleep when——-"
Stacy struggled slowly to his feet when he saw the drawn faces of his companions.
"Was that another of them?" he asked hesitatingly.
"Yes," answered Tad, with a nod. "It is grand, but terrible."
"I don't see anything grand about it. I guess I won't lie down again. I never can sleep any more after being awakened from my first nap," declared the fat boy.
No one slept for the rest of the night. The bombardment continued at intervals all through the black, terrifying night. The Colorado, into which billions of gallons of water had been dumped, was rising rapidly, an angry, threatening flood.
"Is there any danger of the river overflowing on us?" asked Professor
Zepplin.