If it meant anything at all, it meant that if possible they were to be interfered with on their way across the continent. This prospect was not at all to their liking. They wanted to the get to the Pacific coast as soon as possible and begin the quest in the mountains. Shortly after five o’clock they saw the city of Baltimore stretched out below them. Deciding that it would be much better to land some distance from the city and prepare breakfast out in the open country than to attract universal attention by dropping down in the city, Ben volplaned down on a macadamized highway some distance out of the town. Jimmie followed his example at once, and before long a small alcohol stove was in action, sending the fragrance of bubbling coffee out into the fresh morning air. Even at that early hour half a dozen loungers gathered about the machines, gazing with wondering eyes at the youthful aviators. The boys explained the object of their journey in the first words which came to their lips, which, it is unnecessary to state, were highly imaginative, and the loungers stood about watching the boys eat and drink and asking questions concerning the mechanism of the motors. After eating and inspecting the machines the boys started away again. At the time of their departure there was at least half a hundred people standing around, hands in pockets, mouths half open. The boys passed over Washington in a short time and glanced down at the great dome of the capitol and at the towering shaft of the Washington monument. The machines, however, were going at a swift pace, and the many points of interest at the capital of the nation soon faded from view. About every two hours all through the day and early evening the boys came to the surface at some convenient point and rested and examined their machines. The motors were working splendidly, and the lads were certain that if it should become necessary they could make five hundred miles without a halt. This was at least encouraging. When night fell they found themselves not far from St. Louis. They dropped down in a lonely field about sunset and built a roaring camp-fire. There was not a house in sight, and the field where the machines lay was surrounded by a fringe of small trees. Ten or fifteen miles to the west rolled the Mississippi river and beyond lay the paved streets of St. Louis, where they were to meet Havens. The day’s journey had been a most successful one. Jimmie was certain that at times the _Louise_ had traveled at the rate of a hundred miles an hour. There had been no accidents of any kind. “From New York to the Mississippi in one day appears to me to be going some!” declared Jimmie, “and I never was so tired in my life. We can’t go on to-night if we are to meet Havens in St. Louis to-morrow, and so I’m going to get out one of the oiled silk shelter tents and go to bed.” While the boys planned a long night’s rest the whirr of motors came dully from the sky off to the north.