The postmarks on the letters in the package in our hands show that they joined the current at a junction but a few miles past, and if the location of one of them is sought on the map, it is found to be an obscure hamlet on a remote stage route, by which it reaches the railroad, over which a single clerk in an office seven feet square, or less, performs local service, and which line makes connection with the through mail-train on the main road. The letters described are tied in a package with others, and a label slip placed thereon addressed to some railway post-office, perhaps hundreds of miles distant, which is reached unbroken through a many-linked chain of connections; with this package are others for large cities which will be passed along intact to destination, and also letters labeled to railway post-office lines making connections in their turn. The pouches and sacks into which the packages of letters and papers are deposited will be received at the next junction into a railway post-office car, sorted and forwarded in the manner described. In many cases a mail is sent across by a stage route to connect a parallel line, and thereby feeding a new section. Mail matter is frequently received, through error, for post-offices on the line of road but just passed, or for post-offices supplied only by one railway post-office train moving in the opposite direction; to provide for such mail a pouch is left at the meeting-point of this train; and so the train plunges on with its busy workers, its pleasure-seekers, and its composite humanity, The clerks have long since become grim with the smut of the train, paling all others but the fireman, and the long-nursed illusion that all government positions are sinecures is rudely dispelled by their appearance, and an insight into their arduous duties. As the train lazily rolls into the terminal station, pouches and sacks are ready for delivery and the clerks make ready to leave the car.