But it is in general a cheerful, wholesome, and ordinary world, wherein boys and girls do boyish and girlish things, and fall in love, and marry, and have children; and people call to one another across the fire-escapes; and a doctor might humor the little girl and listen to her doll’s heartbeat through a stethoscope; and a man can pull over on the side of a country road and cool himself off in a swimming hole; a world that is largely gone, without anything close for a fit replacement.