FOREIGN AFFAIRS AND OTHER STORIES by SEAN O'FAOLAIN 226 pages. Atlantic MonthlyLittle, Brown. $8.95.
A fatuous young writer asks a doctor friend for material for a short story, something that will "out-Maupassant Maupassant." The friend responds with an experience from his youth, a naggingly inexplicable encounter with a senior boy at an English boarding school. As the tale is told, the listener grows restive: the narrative is replete with hidden motives, loose ends and awkward, tag-along sequels. "There is too much in it," the writer finally declares. He cannot possibly turn such a...