Ahead of them lay the ship. Sim could not believe they were so near.

      The ground became covered with ice. They slipped and fell again and again. Behind them the river was frozen into a blue-white snake of cold solidity. A few last drops of rain from somewhere came down as hard pellets.

      Sim fell against the bulk of the ship. He was actually touching it. Touching it! He heard Lyte whimpering in her constricted throat. This was the metal, the ship. How many others had touched it in the long days? He and Lyte had made it!

      He touched it lovingly. Then, as cold as the air, his veins were chilled.

      Where was the entrance?

      You run, you swim, you almost drown, you curse, you sweat, you work, you reach a mountain, you go up it, you hammer on metal, you shout with relief, you reach the ship, and then—you can't find the entrance.

      * * * * *

      He fought to keep himself from breaking down. Slowly, he told himself, but not too slowly, go around the ship. The metal slid under his searching hands, so cold that his hands, sweating, almost froze to it. Now, far around to the side. Lyte moved with him. The cold held them like a fist. It began to squeeze.

      The entrance.

      Metal. Cold, immutable metal. A thin line of opening at the sealing point. Throwing all caution aside, he beat at it. He felt his stomach seething with cold. His fingers were numb, his eyes were half frozen in their sockets. He began to beat and search and scream against the metal door. "Open up! Open up!" He staggered.

      The air-lock sighed. With a whispering of metal on rubber beddings, the door swung softly sidewise and vanished back.

      He saw Lyte run forward, clutch at her throat, and drop inside a small shiny chamber. He shuffled after her, blankly.

      The air-lock door sealed shut behind him.

      He could not breathe. His heart began to slow, to stop.

      They were trapped inside the ship now, and something was happening. He sank down to his knees and choked for air.

      The ship he had come to for salvation was now slowing his pulse, darkening his brain, poisoning him. With a starved, faint kind of expiring terror, he realized that he was dying.

      Blackness.

      * * * * *

      He had a dim sense of time passing, of thinking, struggling, to make his heart go quick, quick.... To make his eyes focus. But the fluid in his body lagged quietly through his settling veins and he heard his temple pulses thud, pause, thud, pause and thud again with lulling intermissions.

      He could not move, not a hand or leg or finger. It was an effort to lift the tonnage of his eyelashes. He could not shift his face even, to see Lyte lying beside him.

      From a distance came her irregular breathing. It was like the sound a wounded bird makes with his dry, unraveled pinions. She was so close he could almost feel the heat of her; yet she seemed a long way removed.

      I'm getting cold! he thought. Is this death? This slowing of blood, of my heart, this cooling of my body, this drowsy thinking of thoughts?

      Staring at the ship's ceiling he traced its intricate system of tubes and machines. The knowledge, the purpose of the ship, its actions, seeped into him. He began to understand in a kind of revealing lassitude just what these things were his eyes rested upon. Slow. Slow.

      There was an instrument with a gleaming white dial.

      Its purpose?

      He drudged away at the problem, like a man underwater.

      People had used the dial. Touched it. People had repaired it. Installed it. People had dreamed of it before the building, before the installing, before the repairing and touching and using. The dial contained memory of use and manufacture, its very shape was a dream-memory telling Sim why and for what it had been built. Given time, looking at anything, he could draw from it the knowledge he desired. Some dim part of him reached out, dissected the contents of things, analyzed them.

      This dial measured time!

      Millions of days of time!

      But how could that be? Sim's eyes dilated, hot and glittering. Where were humans who needed such an instrument?

      Blood thrummed and beat behind his eyes. He closed them.

      Panic came to him. The day was passing. I am lying here, he thought, and my life slips away. I cannot move. My youth is passing. How long before I can move?

      Through a kind of porthole he saw the night pass, the day come, the day pass, and again another night. Stars danced frostily.

      I will lie here for four or five days, wrinkling and withering, he thought. This ship will not let me move. How much better if I had stayed in my home cliff, lived, enjoyed this short life. What good has it done to come here? I'm missing all the twilights and dawns. I'll never touch Lyte, though she's here at my side.

      Delirium. His mind floated up. His thoughts whirled through the metal ship. He smelled the razor sharp smell of joined metal. He heard the hull contract with night, relax with day.

      Dawn.

      Already—another dawn!

      Today I would have been mature. His jaw clenched. I must get up. I must move. I must enjoy my time of maturity.

      But he didn't move. He felt his blood pump sleepily from chamber to red chamber in his heart, on down and around through his dead body, to be purified by his folding and unfolding lungs. Then the circuit once more.

      The ship grew warm. From somewhere a machine clicked. Automatically the temperature cooled. A controlled gust of air flushed the room.

      Night again. And then another day.

      He lay and saw four days of his life pass.

      He did not try to fight. It was no use. His life was over.

      He didn't want to turn his head now. He didn't want to see Lyte with her face like his tortured mother's—eyelids like gray ash flakes, eyes like beaten, sanded metal, cheeks like eroded stones. He didn't want to see a throat like parched thongs of yellow grass, hands the pattern of smoke risen from a fire, breasts like desiccated rinds and hair stubbly and unshorn as moist gray weeds!

      And himself? How did he look? Was his jaw sunken, the flesh of his eyes pitted, his brow lined and age-scarred?

      * * * * *

      His strength began to return. He felt his heart beating so slow that it was amazing. One hundred beats a minute. Impossible. He felt so cool, so thoughtful, so easy.

      His head fell over to one side. He stared at Lyte. He shouted in surprise.

      She was young and fair.

      She was looking at him, too weak to say anything. Her eyes were like tiny silver medals, her throat curved like the arm of a child. Her hair was blue fire eating at her scalp, fed by the slender life of her body.

      Four days had passed and still she was young ... no, younger than when they had entered the ship. She was still adolescent.

      He could not believe it.

      Her first words were, "How long will this last?"

      He replied, carefully. "I don't know."

      "We are still young."

      "The