then resumed their pacing around the anchored craft. Evidently they were waiting for the escaped prisoners to come up when they would give the alarm and apprehend them.
"What can we do?" asked Mr. Damon.
"I have a plan," said Tom weakly. "It's the only chance, for we're not strong enough to tackle them. Every time they go around on the far side of the airship we must creep forward. When they come on this side we'll lie down. I doubt if they can see us. Once we are on board we can cut the ropes, and start off. Everything is all ready for a start if they haven't monkeyed with her, and I don't think they have. We've got room enough to run along as an aeroplane and mount upward. It's our only hope."
The others agreed, and they put the plan into operation. When the Cossack guards were out of sight the escaped prisoners crawled forward, and when the soldiers came into view our friends waited in silence.
It took several minutes of alternate creeping and waiting to do this, but it was accomplished at last and unseen they managed to slip aboard Then it was the work of but a moment to cut the restraining ropes.
Silently Tom crept to the motor room. He had to work in absolute darkness, for the gleam of a
