"Why?" he asked. "I've been through the Athabasca waterways a dozen times, and know the trail as well as I know Broadway. Besides, I like to be alone. And the work isn't too hard, with the currents all flowing to the north and east."

Sandy was looking at the Dane, with his back to McGill. An exultant gleam shot for an instant into his eyes.

"You're taking the dogs?"

"Yes."

Sandy lighted his pipe, and spoke like one strangely curious.

"Must cost a heap to take these trips o' yourn, don't it?"

"My last cost about seven thousand dollars. This will cost five," said McGill.

"Gawd!" breathed Sandy. "An' you carry all that along with you! Ain't you afraid--something might happen--?"

The little professor was looking the other way now. The carelessness in his face and manner changed. His blue eyes grew a shade darker. A hard smile which Sandy did not see hovered about his lips for an instant.

Then he turned, laughing.

"I'm a very light sleeper," he said. "A footstep at night rouses me.

Even a man's breathing awakes me, when I make up my mind that I must be on my guard. And, besides"--he drew from his pocket a blue-steeled Savage automatic--"I know how to use _this_." He pointed to a knot in the wall of the cabin. "Observe," he said. Five times he fired at twenty paces, and when Sandy went up to look at the knot he gave a gasp. There was one jagged hole where the knot had been.

"Pretty good," he grinned. "Most men couldn't do better'n that with a rifle."

When Sandy left, McGill followed him with a suspicious gleam in his eyes, and a curious smile on his lips. Then he turned to Kazan.

"Guess you've got him figgered out about right, old man," he laughed softly. "I don't blame you very much for wanting to get him by the throat. Perhaps--"

He shoved his hands deep in his pockets, and went into the cabin. Kazan dropped his head between his forepaws, and lay still, with wide-open eyes. It was late afternoon, early in September, and each night brought now the first chill breaths of autumn. Kazan watched the last glow of the sun as it faded out of the southern skies. Darkness always followed swiftly after that, and with darkness came more fiercely his wild longing for freedom. Night after night he had gnawed at his steel chain.

Night after night he had watched the stars, and the moon, and had listened for Gray Wolf's call, while the big Dane lay sleeping. To-night it was colder than usual, and the keen tang of the wind that came fresh from the west stirred him strangely. It set his blood afire with what the Indians call the Frost Hunger. Lethargic summer was gone and the days and nights of hunting were at hand. He wanted to leap out into freedom and run until he was exhausted, with Gray Wolf at his side. He knew that Gray Wolf was off there--where the stars hung low in the clear sky, and that she was waiting. He strained at the end of his chain, and whined. All that night he was restless--more restless than he had been at any time before. Once, in the far distance, he heard a cry that he thought was the cry of Gray Wolf, and his answer roused McGill from deep sleep. It was dawn, and the little professor dressed himself and came out of the cabin. With satisfaction he noted the exhilarating snap in the air. He wet his fingers and held them above his head, chuckling when he found the wind had swung into the north. He went to Kazan, and talked to him. Among other things he said, "This'll put the black flies to sleep, Kazan. A day or two more of it and we'll start."

Five days later McGill led first the Dane, and then Kazan, to a packed canoe. Sandy McTrigger saw them off, and Kazan watched for a chance to leap at him. Sandy kept his distance, and McGill watched the two with a thought that set the blood running swiftly behind the mask of his careless smile. They had slipped a mile down-stream when he leaned over and laid a fearless hand on Kazan's head. Something in the touch of that hand, and in the professor's voice, kept Kazan from a desire to snap at him. He tolerated the friendship with expressionless eyes and a motionless body.

"I was beginning to fear I wouldn't have much sleep, old boy," chuckled McGill ambiguously, "but I guess I can take a nap now and then with _you_ along!"

He made camp that night fifteen miles up the lake sh.o.r.e. The big Dane he fastened to a sapling twenty yards from his small silk tent, but Kazan's chain he made fast to the b.u.t.t of a stunted birch that held down the tent-flap. Before he went into the tent for the night McGill pulled out his automatic and examined it with care.

For three days the journey continued without a mishap along the sh.o.r.e of Lake Athabasca. On the fourth night McGill pitched his tent in a clump of _banskian_ pine a hundred yards back from the water. All that day the wind had come steadily from behind them, and for at least a half of the day the professor had been watching Kazan closely. From the west there had now and then come a scent that stirred him uneasily. Since noon he had sniffed that wind. Twice McGill had heard him growling deep in his throat, and once, when the scent had come stronger than usual, he had bared his fangs, and the bristles stood up along his spine. For an hour after striking camp the little professor did not build a fire, but sat looking up the sh.o.r.e of the lake through his hunting gla.s.s. It was dusk when he returned to where he had put up his tent and chained the dogs.

For a few moments he stood un.o.bserved, looking at the wolf-dog. Kazan was still uneasy. He lay _facing_ the west. McGill made note of this, for the big Dane lay behind Kazan--to the east. Under ordinary conditions Kazan would have faced him. He was sure now that there was something in the west wind. A little shiver ran up his back as he thought of what it might be.

Behind a rock he built a very small fire, and prepared supper. After this he went into the tent, and when he came out he carried a blanket under his arm. He chuckled as he stood for a moment over Kazan.

"We're not going to sleep in there to-night, old hoy," he said. "I don't like what you've found in the west wind. It may he a--_thunder-storm!_"

He laughed at his joke, and buried himself in a clump of stunted _banskians_ thirty paces from the tent. Here he rolled himself in his blanket, and went to sleep.

It was a quiet starlit night, and hours afterward Kazan dropped his nose between his forepaws and drowsed. It was the snap of a twig that roused him. The sound did not awaken the sluggish Dane but instantly Kazan's head was alert, his keen nostrils sniffing the air. What he had smelled all day was heavy about him now. He lay still and quivering. Slowly, from out of the _banskians_ behind the tent, there came a figure. It was not the little professor. It approached cautiously, with lowered head and hunched shoulders, and the starlight revealed the murderous face of Sandy McTrigger. Kazan crouched low. He laid his head flat between his forepaws. His long fangs gleamed. But he made no sound that betrayed his concealment under a thick _banskian_ shrub. Step by step Sandy approached, and at last he reached the flap of the tent. He did not carry a club or a whip in his hand now. In the place of either of those was the glitter of steel. At the door to the tent he paused, and peered in, his back to Kazan.

Silently, swiftly--the wolf now in every movement, Kazan came to his feet. He forgot the chain that held him. Ten feet away stood the enemy he hated above all others he had ever known. Every ounce of strength in his splendid body gathered itself for the spring. And then he leaped.

This time the chain did not pull him back, almost neck-broken. Age and the elements had weakened the leather collar he had worn since the days of his slavery in the traces, and it gave way with a snap. Sandy turned, and in a second leap Kazan's fangs sank into the flesh of his arm. With a startled cry the man fell, and as they rolled over on the ground the big Dane's deep voice rolled out in thunderous alarm as he tugged at his leash. In the fall Kazan's hold was broken. In an instant he was on his feet, ready for another attack. And then the change came. He was _free_. The collar was gone from his neck. The forest, the stars, the whispering wind were all about him. _Here_ were men, and off there was--Gray Wolf! His ears dropped, and he turned swiftly, and slipped like a shadow back into the glorious freedom of his world.

A hundred yards away something stopped him for an instant. It was not the big Dane's voice, but the sharp _crack--crack--crack_, of the little professor's automatic. And above that sound there rose the voice of Sandy McTrigger in a weird and terrible cry.

CHAPTER XXVI

AN EMPTY WORLD

Mile after mile Kazan went on. For a time he was oppressed by the shivering note of death that had come to him in Sandy McTrigger's cry, and he slipped through the _banskians_ like a shadow, his ears flattened, his tail trailing, his hindquarters betraying that curious slinking quality of the wolf and dog stealing away from danger. Then he came out upon a plain, and the stillness, the billion stars in the clear vault of the sky, and the keen air that carried with it a breath of the Arctic barrens made him alert and questioning. He faced the direction of the wind. Somewhere off there, far to the south and west, was Gray Wolf.

For the first time in many weeks he sat back on his haunches and gave the deep and vibrant call that echoed weirdly for miles about him. Back in the _banskians_ the big Dane heard it, and whined. From over the still body of Sandy McTrigger the little professor looked up with a white tense face, and listened for a second cry. But instinct told Kazan that to that first call there would be no answer, and now he struck out swiftly, galloping mile after mile, as a dog follows the trail of its master home. He did not turn hack to the lake, nor was his direction toward Red Gold City. As straight as he might have followed a road blazed by the hand of man he cut across the forty miles of plain and swamp and forest and rocky ridge that lay between him and the McFarlane.

All that night he did not call again for Gray Wolf. With him reasoning was a process brought about by habit--by precedent--and as Gray Wolf had waited for him many times before he knew that she would be waiting for him now near the sand-bar.

By dawn he had reached the river, within three miles of the sand-bar.

Scarcely was the sun up when he stood on the white strip of sand where he and Gray Wolf had come down to drink. Expectantly and confidently he looked about him for Gray Wolf, whining softly, and wagging his tail. He began to search for her scent, but rains had washed even her footprints from the clean sand. All that day he searched for her along the river and out on the plain. He went to where they had killed their last rabbit. He sniffed at the bushes where the poison baits had hung. Again and again he sat back on his haunches and sent out his mating cry to her. And slowly, as he did these things, nature was working in him that miracle of the wild which the Crees have named the "spirit call." As it had worked in Gray Wolf, so now it stirred the blood of Kazan. With the going of the sun, and the sweeping about him of shadowy night, he turned more and more to the south and east. His whole world was made up of the trails over which he had hunted. Beyond those places he did not know that there was such a thing as existence. And in that world, small in his understanding of things, was Gray Wolf. He could not miss her. That world, in his comprehension of it, ran from the McFarlane in a narrow trail through the forests and over the plains to the little valley from which the beavers had driven them. If Gray Wolf was not here--she was there, and tirelessly he resumed his quest of her.

Not until the stars were fading out of the sky again, and gray day was giving place to night, did exhaustion and hunger stop him. He killed a rabbit, and for hours after he had feasted he lay close to his kill, and slept. Then he went on.

The fourth night he came to the little valley between the two ridges, and under the stars, more brilliant now in the chill clearness of the early autumn nights, he followed the creek down into their old swamp home. It was broad day when he reached the edge of the great beaver pond that now completely surrounded the windfall under which Gray-Wolf's second-born had come into the world. Broken Tooth and the other beavers had wrought a big change in what had once been his home and Gray Wolf's, and for many minutes Kazan stood silent and motionless at the edge of the pond, sniffing the air heavy with the unpleasant odor of the usurpers. Until now his spirit had remained unbroken. Footsore, with thinned sides and gaunt head, he circled slowly through the swamp. All that day he searched. And his crest lay flat now, and there was a hunted look in the droop of his shoulders and in the shifting look of his eyes. Gray Wolf was gone.

Slowly nature was impinging that fact upon him. She had pa.s.sed out of his world and out of his life, and he was filled with a loneliness and a grief so great that the forest seemed strange, and the stillness of the wild a thing that now oppressed and frightened him. Once more the dog in him was mastering the wolf. With Gray Wolf he had possessed the world of freedom. Without her, that world was so big and strange and empty that it appalled him. Late in the afternoon he came upon a little pile of crushed clamsh.e.l.ls on the sh.o.r.e of the stream. He sniffed at them--turned away--went back, and sniffed again. It was where Gray Wolf had made a last feast in the swamp before continuing south. But the scent she had left behind was not strong enough to tell Kazan, and for a second time he turned away. That night he slunk under a log, and cried himself to sleep. Deep in the night he grieved in his uneasy slumber, like a child. And day after day, and night after night, Kazan remained a slinking creature of the big swamp, mourning for the one creature that had brought him out of chaos into light, who had filled his world for him, and who, in going from him, had taken from this world even the things that Gray Wolf had lost in her blindness.

CHAPTER XXVII

THE CALL OF SUN ROCK

In the golden glow of the autumn sun there came up the stream overlooked by the Sun Rock one day a man, a woman and a child in a canoe.

Civilization had done for lovely Joan what it had done for many another wild flower transplanted from the depths of the wilderness. Her cheeks were thin. Her blue eyes had lost their l.u.s.ter. She coughed, and when she coughed the man looked at her with love and fear in his eyes. But now, slowly, the man had begun to see the transformation, and on the day their canoe pointed up the stream and into the wonderful valley that had been their home before the call of the distant city came to them, he noted the flush gathering once more in her cheeks, the fuller redness of her lips, and the gathering glow of happiness and content in her eyes.

He laughed softly as he saw these things, and he blessed the forests. In the canoe she had leaned back, with her head almost against his shoulder, and he stopped paddling to draw her to him, and run his fingers through the soft golden ma.s.ses of her hair.

"You are happy again, Joan," he laughed joyously. "The doctors were right. You are a part of the forests."

"Yes, I am happy," she whispered, and suddenly there came a little thrill into her voice, and she pointed to a white finger of sand running out into the stream. "Do you remember--years and years ago, it seems--that Kazan left us here? _She_ was on the sand over there, calling to him. Do you remember?" There was a little tremble about her mouth, and she added, "I wonder--where they--have gone."

The cabin was as they had left it. Only the crimson _bakneesh_ had grown up about it, and shrubs and tall gra.s.s had sprung up near its walls.

Once more it took on life, and day by day the color came deeper into Joan's cheeks, and her voice was filled with its old wild sweetness of song. Joan's husband cleared the trails over his old trap-lines, and Joan and the little Joan, who romped and talked now, transformed the cabin into _home_. One night the man returned to the cabin late, and when he came in there was a glow of excitement in Joan's blue eyes, and a tremble in her voice when she greeted him.

"Did you hear it?" she asked. "Did you hear--_the call_?"

He nodded, stroking her soft hair.

"I was a mile back in the creek swamp," he said. "I heard it!"

Joan's hands clutched his arms.