Ned, let's speed her up, and make them take more of our star dust."
"Wait a minute," advised the Russian, as he took the telescope from Tom, and viewed the ever-increasing speck behind them. "Are you sure of the speed of this craft?" he asked a moment later.
"I never saw the one yet I couldn't pull away from, even after giving them a start," answered the young inventor proudly. "That is all but my little sky racer. I could let them get within speaking distance, and then pull out like the Congressional Limited passing a slow freight."
"Then wait a few minutes," suggested Mr. Petrofsky. "That is an aeroplane all right, but I can't make out from what country. I'd like a better view, and if it's safe we can come closer."
"Oh, it's safe enough," declared Tom. "I'll get things in shape for a quick move," and he hurried back to the machine room, while the others took turns looking at the on-coming aeroplane. And it was coming on rapidly, showing that it had tremendous power, for it was a very large one, carrying three men.
"How do you suppose they got on our track?" asked Ned.
"Oh, we must have been reported from time to time, as we flew over cities or towns," replied Mr.
