There were birds in the park, half a dozen species, but they had gone to roost in the grove of trees. The grass was green again, and the water in the pool looked like water--not liquid light. A fish jumped, making ripples that spread out and out to the tile edge. A squirrel frisked across the lawn. "We've done a good job," said Isaac complacently. Matt frowned. It was raining outside like the night they had landed. The water streamed down the plastic dome blurring the scene beyond. But he didn't need to see; he knew. The sere brown grass, the bare skeleton trunks and limbs of the trees. Food had grown so scarce that the animals were mad with hunger. It was dangerous to venture outside. But the winter would take care of them. In the spring the Earth would be dead. Not dead, exactly. There would be the community here, a tiny island of the old life. And there were the new silicon protozoa. In a million years they should evolve thousands of complex organisms. The Earth would be cloaked again with a weird and fantastic life. Matt said, "The job's not done, Isaac. It's just beginning." "Eh?" "Have you seen the plans the engineers are drawing up for the new city?" "Oh," said Isaac. He chuckled in his chest. The community was deep in plans for an immense city of plastic that was to cover thousands of acres and be hundreds of levels high. A dream city. "The crystal city," he said. Matt regarded him shrewdly. "Yes. Crystal City. It may take generations to build, but we'll get it done." There was a man approaching across the park. Matt recognized Nesbit. "Hello, Matt," the palaeontologist called cheerily. "I brought you something to hang in your living room." He held out a framed picture. Matt glanced at it in surprise. It was an original Rembrandt etching: the Goldweigher's Field. "Thanks, Hi. I never thought I'd own a genuine Rembrandt. What have you decided about the palaeontologist exhibits in the museums?" "They're better off left where they are right now. In time, maybe we can move them to Crystal City." "Yes," Matt agreed. "Well, if I don't go in I'll be late for dinner." His face lengthened. "I don't want that to happen again." Both men chuckled. Nesbit called after him, "Next time I go to the museum, I'll bring you one of Renoir's Nudes." There had been a remarkable change in Nesbit, Matt reflected as he hurried across the grass. But it didn't take a psychologist to get to the bottom of the change. There was the faintest hesitation in Matt's manner when he reached the door of his apartment. Then he squared his shoulders, and pushed inside. * * * * * Lynn and Margot Drake were sitting in the front room. They glanced up. "Darling," they both said in the same breath. "You're late." Matt winced. He said, "I've been busy." A third girl stuck her head out of the dining room door. "So there you are. Dinner's growing cold. Hurry up."