"About fifty miles an hour."
"Great Scott! That's going some!"
The machine was skimming at great speed through the air, flying low, as
Hal did not wish to lose sight of the ground entirely.
"This is high enough for me," he explained. "I might want to go down suddenly, and I want to see where I am going. Of course, if it is necessary, we will go higher."
"I guess we might as well fall ten miles as to fall from here," remarked
Chester. "If anything went wrong it would be good night for us."
For a time they flew along in silence.
Suddenly there was the sound of a shot from below, and a bullet whizzed by the flying aeroplane.
Hal sent the machine higher into the air with a jump, and Chester let out an exclamation as he was almost thrown from his seat.
"That was too close for comfort!" cried Hal.
"Well, the next time you decide to shoot up like that, let me know first!" exclaimed Chester. "You almost lost me that time!"