It was important that he should remain over night in Chesterton, in order to report to Detective Pendar and receive instructions from him. The youth was morbidly sensitive about offending the gentleman, or doing anything that could interfere with the success of the extraordinary enterprise in which he was engaged.

Harvey had changed the course of the machine and lifted the edge of his front rudder in order to make sure of clearing the top of the ridge, when Bohunkus touched him smartly with the toe of his shoe. The aviator turned his head to learn the cause, and the dusky youth with staring eyes pointed to the northwest, that is somewhat to the left of the course they were following. Looking in that direction, Harvey to his astonishment saw an aeroplane no more than a mile distant. With a minute or two at his disposal, he brought his binoculars into play.

The first glance told him an amazing fact.

“As sure as I’m alive, it’s the Dragon of the Skies! Professor Morgan is coming this way too! I’ll be neighborly and meet him.”

The vertical rudder at the rear was shifted, and the two machines the next moment were so headed that a collision threatened unless one changed its course.

Bohunkus kicked the shoulder of his friend again. His dark face revealed his terror.

“He’s gwine to smash dis locumotive! What’ll ’come ob us?”

Of course not a syllable of these words could be heard in the thunderous throbbing of the motor, but the expression of Bunk’s face and the vigorous contortions of his lips made his meaning clear. It occurred to Harvey that there might be cause for his companion’s alarm. There is no accounting for the whimsies of a crank, and, having destroyed one aeroplane, what more likely than that he should wreak his fury upon another, particularly when it was handled by the owner of the former?

Harvey’s first inclination was to shift his course again and run away from the Professor, but he reflected that if he did so, he would invite pursuit, and speedy as was the new machine it was certain the Dragon of the Skies was speedier. An inventor who was able to construct an “uplifter” that would hold his monoplane as stationary as a bird waiting for sight of the fish far below before making its dive, or could muffle his motor into noiselessness without lessening its power, was sure, beside doing all this, to acquire a speed that no rival could equal.

It was better to put a bold face on the situation, and paying no heed, therefore, to the gestures and mute shouts of his companion, Harvey headed for the monoplane, which approached with the speed and accuracy of an arrow.