$2 BREAK-UP riverside willows, and the air during sunlit hours had a new softness that was tolerant of life. But with the failing of the light all stirrings ceased. The little streams of melting snow became still and glassy; pebbles that had rolled half-way down some sun-warmed bank froze hard into the mud and slush, arrested by the coldness of night. And up over the gleaming peaks a white moon came to stare across the hard, pale surfaces of a frozen world.