“It’s that rascal Lawless and his mate Durkee!” cried Nat. “Now I know why those voices seemed so familiar. It was those two ruffians who captured me the other night.”
“But how in the world did they get here?” asked Joe.
It was many days before that mystery was solved for the Motor Rangers, but in the meantime they at least had the satisfaction of seeing that the cowardly endeavor to injure the airship had resulted in their arrest.
But they gave little time to thinking of Lawless and his fellow ruffian. The land of mystery, of the lost city, of the unknown, lay before them.
With a fair wind and with perfectly working engines, the Discoverer drove forward at forty miles an hour, carrying the Motor Rangers on the strangest cruise of their eventful lives.
CHAPTER XV.
A SIGNAL THAT MEANT “DANGER.”
Spinning along at a height the barograph showed to be 1,500 feet, was an exhilarating experience. The slight feeling of apprehension which the Motor Rangers had felt when they set out on their novel cruise, soon wore off, and was replaced by a buoyant sensation.
“Well, Master Nat, what do you think of it?” inquired the professor, emerging from the cabin and coming “aft” to where Nat was standing by the smoothly running motor.
“It’s glorious,” replied Nat enthusiastically. “I had no idea, though, that it was possible to get used to it so soon.”