For a man of his years and inexperience, only a canny Scot, perhaps, grounded in common sense and established in logic, could have preserved even that measure of balance that this youth somehow or other did manage to preserve through the whole adventure. Otherwise, two things he presently noticed, while forging pluckily ahead, must have sent him headlong back to the comparative safety of his tent, instead of only making his hands close more tightly upon the rifle stock, while his heart, trained for the Wee Kirk, sent a wordless prayer winging its way to heaven. Both tracks, he saw, had undergone a change, and this change, so far as it concerned the footsteps of the man, was in some undecipherable manner—appalling.

It was in the bigger tracks he first noticed this, and for a long time he could not quite believe his eyes. Was it the blown leaves that produced odd effects of light and shade, or that the dry snow, drifting like finely ground rice about the edges, cast shadows and high lights? Or was it actually the fact that the great marks had become faintly colored? For round about the deep, plunging holes of the animal there now appeared a mysterious, reddish tinge that was more like an effect of light than of anything that dyed the substance of the snow itself. Every mark had it, and had it increasingly—this indistinct fiery tinge that painted a new touch of ghastliness into the picture.

But when, wholly unable to explain or to credit it, he turned his attention to the other tracks to discover if they, too, bore similar witness, he noticed that these had meanwhile undergone a change that was infinitely worse, and charged with far more horrible suggestion. For, in the last hundred yards or so, he saw that they had grown gradually into the semblance of the parent tread. Imperceptibly the change had come about, yet unmistakably. It was hard to see where the change first began. The result, however, was beyond question. Smaller, neater, more cleanly modeled, they formed now an exact and careful duplicate of the larger tracks beside them. The feet that produced them had, therefore, also changed. And something in his mind reared up with loathing and with terror as he saw it.

Simpson, for the first time, hesitated; then, ashamed of his alarm and indecision, took a few hurried steps ahead; the next instant stopped dead in his tracks. Immediately in front of him all signs of the trail ceased; both tracks came to an abrupt end. On all sides, for a hundred yards and more, he searched in vain for the least indication of their continuance. There was—nothing.

The trees were very thick just there, big trees all of them, spruce, cedar, hemlock; there was no underbrush. He stood, looking about him, all distraught; bereft of any power of judgment. Then he set to work to search again, and again, and yet again, but always with the same result: nothing. The feet that printed the surface of the snow thus far had now, apparently, left the ground!

And it was in that moment of distress and confusion that the whip of terror laid its most nicely calculated lash about his heart. It dropped with deadly effect upon the sorest spot of all, completely unnerving him. He had been secretly dreading all the time that it would come—and come it did.

Far overhead, muted by great height and distance, strangely thinned and wailing, he heard the crying voice of Défago, the guide.

The sound dropped upon him out of that still, wintry sky with an effect of dismay and terror unsurpassed. The rifle fell to his feet. He stood motionless an instant, listening as it were with his whole body, then staggered back against the nearest tree for support, disorganized hopelessly in mind and spirit. To him, in that moment, it seemed the most shattering and dislocating experience he had ever known, so that his heart emptied itself of all feeling whatsoever as by a sudden draught.

"Oh! oh! This fiery height! Oh, my feet of fire! My burning feet of fire ...!" ran in far, beseeching accents of indescribable appeal this voice of anguish down the sky. Once it called—then silence through all the listening wilderness of trees.

And Simpson, scarcely knowing what he did, presently found himself running wildly to and fro, searching, calling, tripping over roots and boulders, and flinging himself in a frenzy of undirected pursuit after the Caller. Behind the screen of memory and emotion with which experience veils events, he plunged, distracted and half-deranged, picking up false lights like a ship at sea, terror in his eyes and heart and soul. For the Panic of the Wilderness had called to him in that far voice—the Power of untamed Distance—the Enticement of the Desolation that destroys. He knew in that moment all the pains of someone hopelessly and irretrievably lost, suffering the lust and travail of a soul in the final Loneliness. A vision of Défago, eternally hunted, driven and pursued across the skiey vastness of those ancient forests fled like a flame across the dark ruin of his thoughts ...