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WHITE FANG

run on forever. His iron-like body ignored fatigue. And even after fatigue came, his heritage of endurance braced him to endless endeavor and enabled him to drive his complaining body onward.

Where the river swung in against precipitous bluffs, he climbed the high mountains behind. Rivers and streams that entered the main river he forded or swam. Often he took to the rim-ice that was beginning to form, and more than once he crashed through and struggled for life in the icy current. Always he was on the lookout for the trail of the gods where it might leave the river and proceed inland.

White Fang was intelligent beyond the average of his kind; yet his mental vision was not wide enough to embrace the other bank of the Mackenzie. What if the trail of the gods led out on that side? It never entered his head. Later on, when he had travelled more and grown older and wiser and come to know more of trails and rivers, it might be that he could grasp and apprehend such a possibility. But that mental power was yet in the future. Just now he ran blindly, his own bank of the Mackenzie alone entering into his calculations.

All night he ran, blundering in the darkness into mishaps and obstacles that delayed but did not daunt. By the middle of the second day he had been running continuously for thirty hours, and the iron of his flesh was giving out. It was the endurance of his mind