"The others must still be on the watch."
"Yes, unless they, too, have been captured."
The boys returned to the hole in the wall and, to occupy themselves, dug away at it harder than ever. Another stone was loosened and pulled into the cell.
"We're making a little progress, anyway," sighed Tom.
"Hark! I hear something," said Dick a little later. "Listen!"
They stopped their work and both strained their ears. A curious roaring and crackling came from overhead.
"That's odd," mused Tom. "What do you make of it?"
"I am almost afraid to say, Tom."
"Afraid?"
"Yes. If it is what I think, we may be doomed," went on the eldest Rover seriously.
"Dick! What do you think it is?"
"The crackling of flames. They have set the ranch on fire."
"Would they do that—and leave us here? It is—is inhuman."
"Those men are desperate characters. Tom, and they'd stop at nothing."
They continued to listen, and soon the roaring and crackling grew plainer. Then came a dull
