"There are only three," he said. "I can shoot them one by one."

"No, no!" cried Burton. "The shots would alarm their friends above. Besides, they'll be more useful to us alive, as hostages, perhaps, even if we don't get useful information out of them."

"You are right," said the old man, "but it is a pity," and he reluctantly laid the rifle aside.

They had reason to commend young Marco's scouting, for only a few minutes after their preparations were completed, the horsemen were heard approaching the bend. The boy, whose eyes had been fixed on his grandfather, at a nod from him whipped up the oxen, and the cart lurched forward just as the horsemen came in sight. As if surprised by their appearance, Marco pulled up so that there was barely room for a horse to pass on the side where the bank shelved downwards. His grandfather and Burton were still hidden in the rear.

The three horsemen had been riding abreast, but at sight of the cart they moved into single file. The first was a German officer; then came the Serbian prisoner with the Bulgarian trooper holding the rope behind.

The German officer reined up, and asked Marco a question. The boy shook his head, and the German turned impatiently to the prisoner, ordering him to repeat the question. At this moment Burton, revolver in hand, slipped from behind the cart on the side of the declivity, while the old man with some difficulty squeezed himself between the wheel and the high bank on the other side. A gleam in the eyes of the prisoner apprised the German that something was happening behind him, and he was in the act of turning when his arm was seized and he saw himself confronted by a determined-looking young airman, levelling a revolver within a few inches of his head. One arm was held as in a vice, the other hand was engaged with the rein; it was impossible to draw his own revolver. He called to the trooper to shoot, but that warrior was otherwise engaged.

"Dismount, sir," said Burton, quietly. "You are my prisoner."

"DISMOUNT, SIR."

And seeing that there was no help for it, the German made haste to obey.