"Go on! Go on!" yelled Fuller. "Never mind about the bridge." He glanced back and saw the shed collapse, shooting sparks into the pillar of smoke that was rising. "We'll get them between here and Chattanooga."

* * * * *

That smoke, rising into the sky, came like a signal of triumph to Andrews' men. They watched it silently; then they yelled. It was recompense for all those long hours of tension and violent effort. The men danced, shouted, and hammered each other upon the back. Andrews' face, drawn by hours of anxiety, relaxed into a smile.

"There's one bridge down!" he shouted. "How much fuel have we?"

"This is the last of it," answered Tom. He kicked the two logs which lay on the tender floor, ready to be shoved into the fire-box.

Andrews went to the tender and gathered the men about him. "What we'll do from here on," he said, "depends upon whether the Rebs come through that bridge. If they don't get through, we'll have time enough to gather fuel and burn the bridges ahead of us. If they do get through, the only thing that we can do is to abandon the engine and take to our legs."

"Stop and fight 'em," protested Boss.

"No," answered Andrews. "We're not here to fight. It won't do us or the North any good. We're here to burn bridges and we've done it. If we can't reach the next bridge our work is done. Scatter—each man for himself!"

The General came into a long straight track, which had the small town of Ringgold at its northern end. "If we don't see them by the time we reach the next curve it means they're stopped," said Andrews.

Tom put the last of the fuel into the fire. Brown closed the dampers and glanced at the steam gauge. He shook his head savagely. "If we only had some of that fuel we used on the freight car!" he exclaimed.