The color scheme of the mountain side, brown, white and gray, added in the passing minute some new and stirring effects. On a higher slope were arrayed a number of men wearing crest helmets, blue jackets and red trousers.

"Say, boss," drawled Billy, when he caught sight of these gorgeous figures, "there's a circus band coming down the mountains."

Roque looked up. "Austrian dragoons!" he exclaimed. "We've rung the bell this time!"

Whether or not the dragoons heard Roque's exultant remarks, they were, nevertheless, gazing at and pointing to the spot where the stranded aviators were joyfully anticipating discovery. Willing to aid it, indeed, upstanding and waving welcome.

The soldiers came in haste to size up the strangely arrived visitors, and the leader recognized Roque as an oft-seen mixer in official circles. In calling him by name, however, the name was not "Roque."

The secret agent promptly explained the situation, and received hearty assurance that he could have enough petrol to carry him back to Berlin, if he wanted that much.

"We have fifteen air cruisers with us," stated the dragoon spokesman. "By the way, who is your pilot? You must have plucked him young."

Billy, notwithstanding Henri's patient instruction, was a little short yet in the Teuton tongue, but he had picked out of the conversation at this stage enough to put him wise to the fact that he was in the limelight.

"A bud as to years, I'll admit, my dear lieutenant, but in genius, skill and daring a full flower; one of the master craftsmen of the flying profession, and I left a companion piece on the other side of the mountain."

Threading Roque's eloquent tribute no doubt was the memory of that most recent rescue performance of the Boy Aviators in the black pass of Uzsok.