“We’ve got just about enough gas left to make the field,” Tom said. “I didn’t realize we’d used up quite so much. The engine was cold when we started so early in the morning, I guess, and it took more fuel to pep it up. I’ll take along a bit extra on the next two legs.”

“A good idea,” suggested Ned, as he began working the wireless instrument, to call the operator at the Chicago landing field. He was not long in getting him, for Tom had made his arrangements well, and those associated with him in the airline express were anxiously awaiting his arrival.

“We’ll land in about three minutes,” Ned sent the message. “Is everything in readiness for a quick change?”

“All O. K., sir,” was the reply, for a former army flier was in charge here and he held to the traditions of the service.

“Better send word back to Dad,” went on Tom, as he banked the plane slightly in readiness for bringing it up into the wind to make the landing on the big field just below them. Off to the left was the glistening lake, and Tom had a momentary glimpse of the wide and beautiful Lake Shore Drive, Chicago’s principal boulevard.

“Did you get him, Ned?” asked the young inventor, as he noted below him the crowd that had assembled to await his landing. Word of the sensational attempt to link the two edges of the United States by a dawn-to-dark flight had been broadcasted all over the country.

“Yes, your father’s all right,” reported Ned, who had been listening. “He sends his congratulations and so does Mary.”

“Is she there?”

“Yes, and anxious for your success,” reported Ned.

“Tell her I’ll talk to her after we hop off on the other leg,” directed Tom, and then his attention had to be given to making a safe landing—no easy feat when it is remembered that he had no ordinary aeroplane to bring down, but a heavy car attached to it and passengers to look after.