That looks bad." "It is fortunate that we got the boy out of New York," replied Nestor.
"Even the temporary captivity he is undergoing is better than the Tombs." "I'm afraid he's on the way to the Tombs now," Frank said.

"He surely is unless we can do something immediately.

The big rascal may come upon a band of outlaws any minute that would be too strong for us to attack." During this talk Jimmie had been searching for nuggets on the eastern side of the chamber, finding a small one occasionally when the light was turned toward him.

As Shaw finished speaking the boy found another, and the watcher was wondering how rich the earth was.
Then he saw the boy, stooping to the floor of the cavern, evidently in quest of more gold, he being at that time close to the east wall, suddenly throw up his arms and disappear, apparently through the very floor of the chamber.
Frank stood for a second looking toward the place where this strange disappearance had taken place, rubbed his eyes to make sure that he was wide awake, and then uttered a cry which brought the others hastily to his side.
When the boys reached the point of disappearance they looked for a fissure in the rocky floor, but found none.

Instead, they saw a round, smooth opening into what seemed to be another tunnel.