"Tell you what," cried Jimsy suddenly, "what's the matter with Miss Prescott going along in an automobile? We can map out the route, arrange our stops and meet every evening at some small town where we won't attract too much of a crowd."

"Jimsy, I always said you were a genius," cried Peggy.

"Behold the last objection swept away," struck in Bess.

"Surely you can't refuse now?" urged Jess.

"Please say yes," came from them all.

"But—but who would drive the car?" asked Miss Prescott, in the voice of one who is thinking up a feeble last objection.

"Why, Jake Rickets, of course," declared Roy, referring to the man who helped the boys in the machine shop in which the aëroplanes for the desert mines were manufactured.

After this Miss Prescott could make but a poor stand against the united urgings of five impetuous, enthusiastic young people. The air was filled with plans of all sorts. Jimsy was for going at once, but it was finally decided to meet again and set a definite date for a start. In the meantime there were parents' consents to be obtained, plans laid for the route to be followed, and various things purchased for the aërial trip.

All this occupied some time, and it was not till a week later that the last difficulty in connection with the motor flight had been straightened out and the three aëroplanes stood ready, in Roy's hangar, for a tour that was to prove eventful in more ways than one.

It was just after dawn on the day of the start that Roy and Jimsy for the last time went over every nut and bolt on the machines and declared everything in perfect readiness for the trip. Breakfast was a mere pretence at a meal; excitement got the better of appetites that morning.