Publisher's Synopsis
"What's that below, Hal?" The speaker was Chester Crawford, an American lad of some 16 years. Hal Paine allowed his eyes to turn from the steering wheel and glanced over the side of the flying aëroplane. "I don't see anything," he replied, after a careful scrutiny below. "Neither do I, now," said Chester, straining his eyes. At this moment the third occupant of the machine made his presence known. "Woof! Woof!" he exclaimed. The third speaker was Marquis, a dog. "Woof! Woof!" he barked again. Hal, with a quick move, slackened the speed of the aëroplane, and let it glide gently closer to the earth. "Must be something wrong," he confided to Chester, "or Marquis wouldn't be barking like that."
