One of the habitués of every station is the section-master, who looks after three, five, or ten miles of track and a gang of from five to twenty-five men who keep it in repair. He is not much seen, because he is out on the road most of the time; and his duties are not of a kind that the reader could study, on paper, to much advantage; but he deserves mention because his place is a really important one. Railroad tracks cannot be made, like a bridge, five times as strong as is necessary, and thus a large margin be allowed for deterioration; they must be constantly watched to see that they do not fall even a little below their highest standard. This care-taking can be intrusted only to one who has had long experience at the work. In violent rain-storms the trackman must be on duty night and day and patrol the whole length of his division to see that gravel is not washed over the track or out from under it. Though roughly dressed and sunburnt, he is an important personage in the eye of the engineer of a fast express train, and if he be the least bit negligent, even to the extent of letting a few rails get a quarter of an inch lower than they ought to, he hears a prompt appeal from the engine-runner. The latter could not feel the confidence necessary to guide his 50-ton giant over the road at lightning speed with its precious human freight if he had not a trusty trackman every few miles; and passengers who feel like expressing gratitude for a safe railroad journey should never forget this unseen guardian. A number of classes of men in the railroad service must be turned off with a word for lack of space. The train despatcher, with his constant burden of care, deserves a chapter. The locomotive fireman, who has not been directly alluded to, is practically an apprentice to the engineer, and, like apprentices in some other callings, has a good deal of hard work to do. He generally has longer hours than the engineer, as he has to clean a portion of the polished brass- and iron-work of the engine. He has to throw into the fire-box several tons of coal a day, and gets so black that his best friends would not know him when washed up. Those who begin young and are intelligent, and conserve their strength, are at length promoted to be engineers. The fireman's twin brother is the "hostler," who is employed at the larger termini to get the iron horse out of its stable, lead it to the watering place and feed-trough (coal-bin), and harness it to the train. The clerk in the freight office has almost as much variety of work as the ticket-seller, and is by no means a mere book-keeper. The workmen at the freight station are not common laborers. Their work requires peculiar skill and experience, and they have diversions worth telling of, if there were space. The men in the shops, and those who go out with derricks and chains to pick up wrecks, are an important class by themselves, and bridge-builders, gate-tenders, and various others bring up the rear.