Not a quarter of a mile ahead of him, standing in the lee of a low ridge, were two figures unmistakably human. At the instant he saw them the wind brought to his nostrils, sensitive as those of an animal, a strange scent that set his pulses bounding. He _smelled_ man and man's fire! A thin spiral of smoke was curling over the back of the ridge. He hurried forward. Hidden by the undulations of slopes and drifts he approached within a few feet of them without being discovered. On the point of crying aloud to them he stopped, paralyzed, and crouched behind a drift. For these men to whom his heart called madly--the first of his own kind but one whom he had ever seen--were tearing at each other's throats like maddened beasts in an effort to take life! Like a man in a dream, Polaris heard their voices raised in curses. They struggled fiercely but weakly. They were on the brink of one of the deep fissures, or crevasses, which seamed this strange, forgotten land. Each was striving to push the other into the chasm. Then one who seemed the stronger wrenched himself free and struck the other in the face. The stricken man staggered, threw his arms above his head, toppled, and crashed down the precipice. Polaris's first introduction to the civilization which he sought was murder! For those were civilized white men who had fought. They wore garments of cloth. Revolvers hung from their belts. Their speech, of which he had heard little but cursing, was civilized English. Pale to the lips, the son of the wilderness leaped over the snow-drift and strode toward the survivor. In the teachings of his father, murder was the greatest of all crimes; its punishment was swift death. This man who stood on the brink of the chasm which had swallowed his companion had been the aggressor in the fight. He had struck first. He had killed. In the heart of Polaris arose a terrible sense of outraged justice. This waif of the eternal snows became the law. The stranger turned and saw him. He started violently, paled, and then an angry flush mounted to his temples and an angry glint came into his eyes. His crime had been witnessed, and by a strange white man. His hand flew to his hip, and he swung a heavy revolver up and fired, speeding the bullet with a curse. He missed and would have fired again, but his hour had struck. With the precision of an automaton Polaris snatched one of his own pistols from the holster. He raised it above the level of his shoulder, and fired on the drop. Not for nothing had he spent long hours practicing with his father's guns, sighting and pulling the trigger countless times, although they were empty. The man in front of him staggered, dropped his pistol, and reeled dizzily. A stream of blood gushed from his lips. He choked, clawed at the air, and pitched backward. The chasm which had received his victim, received the murderer also.