been anywhere else. All that mattered was to get Brave up on the ledge beside him.

Finally Brave came up and got first his fore-paws and then his body over the edge. He lay still, panting proudly, while Raud hugged him and told him, over and over, that he was a good dog. They rested for a long time, and Raud got a slab of pemmican from the pack and divided it with Brave.

It was while they rested in the snow, munching, that he heard the sound for the first time. It was faint and far away, and it sounded like thunder, or like an avalanche beginning, and that puzzled him, for this was not the time of year for either. As he listened, he heard it again, and this time he recognized it—negatron pistols. It frightened him; he wondered if the thieves had met a band of hunters. No; if they were fighting Northfolk, there would be the reports of firearms, too. Or might they be fighting among themselves? Remembering the melted brass studs on Bold's collar, he became more frightened at the thought of what a negatron-blast could do to the Crown.

The noise stopped, then started again, and he got to his feet, calling to Brave. They were on a wide ledge that slanted upward toward the north. It would take him closer to the top, and closer to where Vahr and his companions would come up. Together, they started up, Raud probing cautiously ahead of him with the ice-staff for hidden crevasses. After a while, he came to a wide gap in the ice beside him, slanting toward the top, its upper end lost in swirling snow. So he and Brave began climbing, and after a while he could no longer hear the negatron pistols.

When it was almost too dark to go farther, he suddenly found himself on level snow, and here he made camp, digging a hole and lining it with the sleeping robes.

The sky was clear when he woke, and a pale yellow light was glowing in the east. For a while he lay huddled with the dog, stiff and miserable, and then he forced himself to his feet. He ate, and fed Brave, and then checked his rifle and made his pack.

He was sure, now, that he had a plan that would succeed. He could reach the place where Vahr and the Southrons would come up long before they did, and be waiting for them. In his imagination, he could see them coming up in single file, Vahr Farg's son in the lead, and he could imagine himself hidden behind a mound of snow, the ice-staff upright to brace his left hand and the forestock of the rifle resting on his outthrust thumb and the butt against his shoulder. The first bullet would be for Vahr. He could shoot all of them, one after another, that way....

He stopped, looking in chagrined incredulity at the tracks in front of him—the tracks he knew so well, of one man in sealskin boots and three men with ribbed plastic soles. Why, it couldn't be! They should be no more than half way up the long ravine, between the two tongues of the Ice-Father, ten miles to the north. But here they were, on the back of the Ice-Father and crossing to the west ahead of him. They must have climbed the sheer wall of ice, only a few miles from where he had dragged himself and Brave to the top. Then he remembered the negatron-blasts he had heard. While he had been chopping footholds with a hatchet, they had been smashing tons of ice out of their way.

"Well, Brave," he said mildly. "Old Keeper wasn't so smart, after all, was he? Come on, Brave."

The thieves were making good time. He read that from the tracks —straight, evenly spaced, no weary heel-dragging. Once or twice, he saw where they had stopped for a brief rest. He hoped to see their fire in the evening.

He didn't. They wouldn't have enough fuel to make a big one, or keep it burning long. But in the morning, as he was breaking camp, he saw black smoke ahead.

A few times, he had been in air-boats, and had looked down on the back of the Ice-Father, and it had looked flat. Really, it was not. There were long ridges, sheer on one side and sloping gently on the other, where the ice had overridden hills and low mountains, or had cracked and one side had pushed up over the other. And there were deep gullies where the prevailing winds had scooped away loose snow year after year for centuries, and drifts where it had piled, many of them higher than the building-mounds of the ancient cities. But from a distance, as from above, they all blended into a featureless white monotony.

At last, leaving a tangle of cliffs and ravines, he looked out across a broad stretch of nearly level snow and saw, for the first time, the men he was following. Four tiny dots, so far that they seemed motionless, strung out in single file. Instantly, he crouched behind a swell in the surface and dragged Brave down beside him. One of them, looking back, might see him, as he saw them. When they vanished behind a snow-hill, he rose and hastened forward, to take cover again. He kept at this all day; by alternately resting and running, be found himself gaining on them, and toward evening, he was within rifle-range. The man in the lead was Vahr Farg's son; even at that distance he recognized him easily. The others were Southrons, of course; they wore quilted garments of cloth, and quilted hoods. The man next to Vahr, in blue, carried a rifle, as Vahr did. The man in yellow had only an ice-staff, and the man in green, at the rear, had the Crown on his pack, still in the bearskin bundle.

He waited, at the end of the day, until he saw the light of their fire. Then he and Brave circled widely around their camp, and stopped behind a snow-ridge, on the other side of an open and level stretch a mile wide. He dug the sleeping-hole on the crest of the ridge, making it larger than usual, and piled up a snow breastwork in front of it, with an embrasure through which he could look or fire without being seen.

Before daybreak, he was awake and had his pack made, and when he saw the smoke of the thieves' campfire, he was lying behind his breastwork, the rifle resting on its folded cover, muzzle toward the smoke. He lay for a long time, watching, before he saw the file of tiny dots emerge into the open.

They came forward steadily, in the same order as on the day before, Vahr in the lead and the man with the Crown in the rear. The thieves suspected nothing; they grew larger and larger as they approached, until they were at the range for which he had set his sights. He cuddled the butt of the rifle against his cheek. As the man who carried the Crown walked under the blade of the front sight, he squeezed the trigger.

The rifle belched pink flame and roared and pounded his shoulder. As the muzzle was still rising, he flipped open the breech, and threw out the empty. He inserted a fresh round.

There were only three of them, now. The man with the bearskin bundle was down and motionless. Vahr Farg's son had gotten his rifle unslung and uncovered. The Southron with the other rifle was slower; he was only getting off the cover as Vahr, who must have seen the flash, fired hastily. Too hastily; the bullet kicked up snow twenty feet to the left. The third man had drawn his negatron pistol and was trying to use it; thin hairlines of brilliance were jetting out from his hand, stopping far short of their mark.

Raud closed his sights on the man with the autoloading rifle; as he did, the man with the negatron pistol, realizing the limitations of his weapon, was sweeping it back and forth, aiming at the snow fifty yards in front of him. Raud couldn't see the effect of his second shot—between him and his target, blueish light blazed and twinkled, and dense clouds of steam rose—but he felt sure that he had missed. He reloaded, and watched for movements on the edge of the rising steam.

It cleared, slowly; when it did, there was nothing behind it. Even the body of the dead man was gone. He blinked, bewildered. He'd picked that place carefully; there had been no gully or ravine within running distance. Then he grunted. There hadn't been—but there was now. The negatron pistol again. The thieves were hidden in a pit they had blasted, and they had dragged the