The riot started late Sunday afternoon, in the alley back of John McCullough's house. McCullough was in at the start of it, and he was in at the end. Sunday is thirty hours long on Centaurus II, as are all the other days of the week, of course; and in summer, at the latitude of Port Knakvik, the afternoons are very long indeed. John McCullough that Sunday had finished hanging the windows in the log house he was building, and now he was relaxing on the back stoop with a bottle of local whiskey. T