"We've got to catch them," answered Dick. "If you see a policeman tell him to come along—that we are after a couple of criminals."
Having passed up one street for a block, Baxter and Flapp made a turn and pursued their course down a thoroughfare running parallel to the river.
Here were located a number of factories and mills, with several tenement houses and low groggeries between.
"They are after us yet," panted Flapp, after running for several minutes. "Say, I can't keep this up much longer."
"Come in here," was Dan Baxter's quick reply, and he shot into a small lumber yard attached to a box factory. It was now after six o'clock and the factory had shut down for the day.
Once in the lumber yard they hurried around several corners, and presently came to a shed used for drying lumber. From this shed there was a small door leading into the factory proper.
"I reckon we are safe enough here," said Dan Baxter, as they halted in the shed and crouched down back of a pile of boards.
"Yes, but we can't stay here forever," replied Lew Flapp.
"We can stay as long as they hang around, Flapp."
In the meantime the Rover Boys reached the entrance to the yard, and
Dick, who had kept the lead, called a halt.