One afternoon they found front seats on the sunny roof of a bus and rode for hours from the fading Square up along the sullied river, and then, as the stray beams fled the westward streets, sailed down the turgid Avenue, darkening with ominous bees from the department stores. The traffic was clotted and gripped in a patternless jam; the busses were packed four deep like platforms above the crowd as they waited for the moan of the traffic whistle.