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Rh "I don't know. Come."

The passageway ran in both directions. They felt their way along for ten feet, to find themselves against another wall.

"The other way!" sang out Tom. "Phew! it's getting pretty warm down here, isn't it?"

"And smoky," answered his brother, beginning to cough.

They passed the cell again and started down the passageway in the opposite direction. Twenty feet further on they reached a wooden door, bolted on the other side.

"Stumped again," muttered Tom. "Dick, what shall we do now?"

"Try to break it down. Now, then, with all your might, Tom!"

It was their only hope, and with increased energy they hurled themselves at the door, which bent and creaked. Then, at the fourth onslaught, the door flew open and they went sprawling into the underground chamber beyond.

Here the light from the blazing building could be plainly seen, and by this they made out that they were in a regular printing office. Three foot-power presses were there, also a quantity of variously colored inks and packages of odd-colored paper.

But they could waste no time in investigating.