"You'll be getting too grown-up altogether," she had said to them a few days previously. And now, when they said they were going on a day's outing with the motorcycles, she hastened to prepare a substantial lunch for them. "We'll be back in time for supper, mother," Frank promised. "We're just going to follow the highway along the railroad. After that we may cut across country to Chet's place, and then home." "Take care of yourself," she warned. "No speeding." "We'll be careful," they promised, as Joe stowed the lunch basket on the carrier of his machine. Then, with a sputtering roar, the motorcycles sped out along the driveway and soon the boys were on the concrete highway leading out of the city. In a short time they had reached the outskirts of Bayport, and then they turned west on to the State highway that ran parallel to the railway tracks. It was a bright, sunny spring morning, and the highway was not congested with traffic. Freight trains shunted back and forth on the railway tracks below the embankment, and now and then a passenger train steamed by, trailing a cloud of black smoke. Like most boys, Frank and Joe could not help but feel the fascination of the railway, although they admitted that they preferred the comparative freedom of their own motorcycles, which were not bound to follow the steel rails and did not have to obey the beck and call of despatchers. Out in the open country they put on a little more speed. The highway was like a city pavement beneath them and the cool breeze stung the color into their cheeks. For more than two hours they rode, passing through villages and small towns, until at last they came to a point where another railway intersected the line they had been following. Here, a road also ran parallel to the tracks, branching off the main highway. Always on the alert for new country to explore, the Hardy boys decided to follow this side road. "It's off the main stream of traffic," said Frank, "and the country seems to be wooded farther on. We can have lunch in the shade of some trees." This appeared to be an advantage, for there were no trees along the State road, and the constant stream of vehicles made a roadside lunch something of a public affair. Accordingly, the boys turned their motorcycles down the side road which, although it was not paved, was well graded, and led through a quieter countryside. "What railroad is this, anyway?" asked Frank, as they sped along. "The Bayport and Coast line. It's mostly freight." "The Bayport and Coast! Why, that's the railway that Red Jackley used to work for. Don't you remember dad telling us that? His first crime was stealing freight from the road." "So he did! I'd forgotten all about it."