When he came upon the scene he found a thrilling and sanguine conflict in progress.

At sight of the Steam Man a cheer went up from the Vigilants.

In a moment Frank and Barney were aboard and shaking hands with Pomp.

The situation was quickly explained.

“I thought mos’ likely yo’ would want de Steam Man, Marse Frank,” said the faithful darky. “So I jes’ fetched him ober to yo’.”

“You have done well, Pomp,” said Frank, joyfully. “Of course, this insures our safety. With the Steam Man we would easily escape the cowboys. But it will never do to leave these brave Vigilants to their mercy.”

“Ob co’se not, Marse Frank,” cried Pomp, seizing his rifle. “Jes’ yo’ let dis chile draw a bead on dem rapscallions. I’ll show dem dat Pomp kin use a rifle.”

The Steam Man was placed in the van of the line of battle.

Protected as they were by the impervious screen, those on board could fire with advantage at the cowboys.

The battle was a hot one, but every moment the cowboys slowly gained ground.