The sleeper on the 3:35 A. M. elevated train from the Harlem bridge was awake for once. The sleeper is the last car in the train, and has its own set that snores nightly in the same seats, grunts with the fixed inhospitality of the commuter at the intrusion of a stranger, and is on terms with Conrad, the German conductor, who knows each one of his passengers and wakes him up at his station. The sleeper is unique. It is run for the benefit of those who ride in it, not for the company's. It not only puts them off properly; it waits for them, if they are not there. The conductor knows that they will come. They are men, mostly, with small homes beyond the bridge, whose work takes them down-town to the markets, the Post-office, and the busy marts of the city long before cock-crow. The day begins in New York at all hours. Usually the sleeper is all that its name implies, but this morning it was as far from it as could be. A party of young people, fresh from a neighborhood hop, had come on board and filled the rear end of the car. Their feet tripped yet to the dance, and snatches of the latest waltz floated through the train between peals of laughter and little girlish shrieks. The regulars glared, discontented, in strange seats, unable to go to sleep. Only the railroad yardmen dropped off promptly as they came in. Theirs was the shortest ride, and they could least afford to lose time. Two old Irishmen, flanked by their dinner-pails, gravely discussed the Henry George campaign. Across the passage sat a group of three apart--a young man, a girl, and a little elderly woman with lines of care and hard work in her patient face. She guarded carefully three umbrellas, a very old and faded one, and two that were new and of silk, which she held in her lap, though it had not rained for a month. He was a likely young fellow, tall and straight, with the thoughtful eye of a student. His dark hair fell nearly to his shoulders, and his coat had a foreign cut. The girl was a typical child of the city, slight and graceful of form, dressed in good taste, and with a bright, winning face. The two chatted confidentially together, forgetful of all else, while mama, between them, nodded sleepily in her seat. A sudden burst of white light flooded the car. "Hey! Ninety-ninth street!" called the conductor, and rattled the door. The railroad men tumbled out pell-mell, all but one. Conrad shook him, and he went out, mechanically blinking his eyes. "Eighty-ninth next!" from the doorway. The laughter at the rear end of the car had died out. The young people, in a quieter mood, were humming a popular love-song. Presently above the rest rose a clear tenor: Oh, promise me that some day you and I Will take our love together to some sky Where we can be alone and faith renew-- The clatter of the train as it flew over a switch drowned the rest. When the last wheel had banged upon the frog, I heard the young student's voice, in the soft accents of southern Europe: