As will be remembered distinctly by those of our readers who have had the pleasure of riding in aircraft, sounds from the earth are distinctly heard at a great altitude. In fact, sounds may be distinguished clearly at a much greater distance in a vertical than in a horizontal direction. It was owing to this fact that the shouts from the group below came so clearly to the lads in the Eagle.
"I don't hear Jack's voice amongst the clamor," declare Harry.
"I wonder where he can be?" puzzled Dave, earnestly scanning the vacant space below. "They cannot have hidden him!"
"Suppose we call out and see if we can get a signal from him," suggested Harry. "He would try to answer us, I'm sure."
"Go ahead," Ned agreed. "I'll try a little volplaning and see if we can't get closer to that crowd without getting hit by a bullet."
"Better be careful, Ned," cautioned Dave. "Those fellows are in earnest, I think, and wouldn't stop at anything."
"I'll be careful," was Ned's confident answer. "When you're ready, just yell your heads off for Jack and then watch and listen."
"I'm going to halloo out now," stated Harry, drawing a deep breath.
"Let her go!" urged Ned, manipulating the levers in such a way as to practically check the headway of the slowly moving machine.
"Oh, Ja-a-a-ck!" called Harry at the top of his voice, making a trumpet of his hands. "Oh, Ja-a-a-ack!" he called again.