Train taken possession of.
--Yesterday morning one of the trains of the Western Maryland Railroad was taken possession of by a party of men who proceeded on it as far as Westchester. Who they were or what was their object was not ascertained, but they were going into the country towards the Pennsylvania line, though probably with an intended diversion towards Virginia. They had with them an engineer, who was prepared to run the locomotive had the engineer of the train declined to do so.--Baltimore Sun, Thursday.