and so henry leyden switches on the two lamps beside the window , and jack sawyer moves to the overstuffed chair near the fireplace and turns on the tall lamp at one of its rounded arms and watches as his friend walks unerringly to the light just inside the front door and the ornate fixture alongside his own , his favorite resting place , the mission-style sofa , clicking first one , then the other into life , then settles down onto the sofa with one leg stretched out along its length .