The process of crystallization was more advanced. The fences along the road were so heavily encrusted that they formed a continuous palisade, a white frost at least six inches thick on either side of the palings. The few houses between the trees glistened like wedding cakes, their white roofs and chimneys transformed into exotic minarets and baroque domes. On a lawn of green glass spurs a child's tricycle glittered like a Fabergé gem, the wheels starred into brilliant jasper crowns.

The soldiers were still ahead of Dr. Sanders, but Radek had fallen behind, limping along and pausing to feel the soles of his boots. By now it was obvious to Sanders why the highway to Port Matarre had been closed. The surface of the road was now a carpet of needles, spurs of glass and quartz five or six inches high that reflected the colored light from the leaves above. The spurs tore at Sanders's shoes, forcing him to move hand over hand along the verge.

"Sanders! Come back, Doctor!" The brittle echoes of Radek's voice, like a faint cry in an underground grotto, reached Sanders, but he stumbled on along the road, following the intricate patterns that revolved and expanded over his head like jeweled mandalas.

Behind him an engine roared, and the Chrysler he had seen with Thorensen plunged along the road, the heavy tires cutting through the crystal surface. Twenty yards ahead it rocked to a halt, its engine stalled, and Thorensen jumped out. With a shout he waved Sanders back down the road, now a tunnel of yellow and crimson light formed by the forest canopies overhead.

"Get back! There's another wave coming!" Glancing around wildly, as if searching for someone, he set off at a run after the soldiers.

Dr. Sanders rested by the Chrysler. A marked change had come over the forest, as if dusk had begun to fall. Everywhere the glacé sheaths which enveloped the trees and vegetation had become duller and more opaque. The crystal floor underfoot was occluded and gray, turning the needles into spurs of basalt. The brilliant panoply of colored light had gone, and a dim amber glow moved across the trees, shadowing the sequined floor. At the same time it had become considerably colder. Leaving the car, Dr. Sanders began to make his way back down the road-Radek was still shouting soundlessly to him- but the cold air blocked his path like a refrigerated wall. Turning up the collar of his tropical suit, Sanders retreated to the car, wondering whether to take refuge inside it. The cold deepened, numbing his face, and making his hands feel brittle and fleshless. Somewhere he heard Thorensen's hollow shout, and he caught a glimpse of a soldier running at full speed through the icegray trees.

On the right of the road the darkness enveloped the forest, masking the outlines of the trees, and then extended in a sudden sweep across the roadway. Dr. Sanders's eyes smarted with pain, and he brushed away the crystals of ice that had formed over the eyeballs. As his sight cleared he saw that everywhere around him a heavy frost was forming, accelerating the process of crystallization. The spurs in the roadway were over a foot in height, like the spines of a giant porcupine, and the lattices of moss between the trees were thicker and more translucent, so that the trunks seemed to shrink into a mottled thread. The interlocking leaves formed a continuous mosaic.

The windows of the car were covered by a heavy frost. Dr. Sanders reached for the door handle, but his fingers were stung by the intense cold.

"You there! Come on! This way!"

The voice echoed down a drive behind him. Looking around as the darkness deepened, Dr. Sanders saw the burly figure of Thorensen waving to him from the portico of a mansion near by. The lawn between them seemed to belong to a less somber zone, the grass still retaining its vivid liquid sparkle, as if this enclave were preserved intact like an island in the eye of a hurricane.

Dr. Sanders ran up the drive toward the house. Here the air was at least ten degrees warmer. Reaching the porch, he searched for Thorensen, but the mine-owner had run off again into the forest. Uncertain whether to follow him, Sanders watched the approaching wall of darkness slowly cross the lawn, the glittering foliage overhead sinking into its pall. At the bottom of the drive the Chrysler was now encrusted by a thick layer of frozen glass, its windshield blossoming into a thousand fleur-de-lis crystals.

Quickly making his way around the house, as the zone of safety moved off through the forest, Dr. Sanders crossed the remains of an old vegetable garden, where waist-high plants of green glass rose around him like exquisite sculptures. Waiting as the zone hesitated and veered off, he tried to remain within the center of its focus.

For the next hour he stumbled through the forest, his sense of direction lost, driven from left to right by the occluding walls. He had entered an endless subterranean cavern, where jeweled rocks loomed out of the spectral gloom like huge marine plants, the sprays of grass forming white fountains. Several times he crossed and recrossed the road. The spurs were almost waist-high, and he was forced to clamber over the brittle stems.

Once, as he rested against the trunk of a bifurcated oak, an immense multi-colored bird erupted from a bough over his head and flew off with a wild screech, aureoles of light cascading from its red and yellow wings.

At last the storm subsided, and a pale light filtered through the stained-glass canopy. Again the forest was a place of rainbows, a deep iridescent light glowing around him. He walked down a narrow roadway which wound toward a large colonial house standing like a baroque pavilion on a rise in the center of the forest. Transformed by the frost, it seemed an intact fragment of Versailles or Fontainebleau, its pilasters and friezes spilling from the wide roof like sculptured fountains.

The road narrowed, avoiding the slope which led up to the house, but its annealed crust, blunted like halffused quartz, offered a more comfortable surface than the crystal teeth of the lawn. Fifty yards ahead Dr. Sanders came across what was unmistakably a jeweled rowing boat set solidly into the roadway, a chain of lapis lazuli mooring it to the verge. He realized that he was walking along a small tributary of the river, and that a thin stream of water still ran below the crust. This vestigial motion in some way prevented it from erupting into the spur-like forms of the rest of the forest floor.

As he paused by the boat, feeling the crystals along its sides, a huge four-legged creature half-embedded in the surface lurched forwards through the crust, the loosened pieces of lattice attached to its snout and shoulders shaking like a transparent cuirass. Its jaws mouthed the air silently as it struggled on its hooked legs, unable to clamber more than a few inches from the hollow trough in its own outline now filling with a thin trickle of water. Invested by the glittering light that poured from its body, the crocodile resembled a fabulous armorial beast. Its blind eyes had been transformed into immense crystalline rubies. It lunged toward him again, and Dr. Sanders kicked its snout, scattering the wet jewels that choked its mouth.

Leaving it to subside once more into a frozen posture, Dr. Sanders climbed the bank and limped across the lawn to the mansion, whose fairy towers loomed above the trees. Although out of breath and very nearly exhausted, he had a curious premonition of hope and longing, as if he were some fugitive Adam chancing upon a forgotten gateway to the forbidden paradise.

High in an upstairs window, the bearded man in the white suit watched him, the shotgun in his hands pointed at Sanders's chest.