He rose to throw more wood upon the fire; then stood listening to the voices of the forest. They were so faint and obscure that he had to strain to hear them. It was strange that he had been deaf to them before. They came whispering through the mighty silences, and they filled him with haunting memories. At first the crackle of the fire had obscured them, but as he waited the separate tones became more distinct and permitted some measure of interpretation. He heard the rustling of the thickets, the noise of flicking leaves dim as eyelids winking against a pillow, the sad murmur of the pine limbs, scraping together. Behind them all was the faint murmur of the wind,—a little wind that had sprung up in the snow fields and was making a secret march down through the thickets. Something of the same sense of familiarity that had come to him on first observing the sheep returned to him now. It seemed wholly natural that he should be sitting here in the silence, beside the flocks.—Throughout the ages men of his breed had sat the same way, the firelight playing on them, the faithful dog beside them. The wind whispered and stirred in the wilderness just the same, the white sheep slept. Watching the flocks,—the phrase was as old as the mountains themselves. Yet for a moment he found it hard to believe in the dangers of which the guide had spoken: dangers that would soon exterminate the flock except for the protection of herders and dogs. No scene could be more peaceful: the dark forest so lightly stirred by the wind, the river singing past, the soft firelight, the stars in the sky. The breath of the night was sweet and cool; surely there would be no hurry about notifying the flock owner of the herder’s death. He turned again to the dog. “You can take care of them, can’t you, boy?” he asked. He glanced down, then stiffened with excitement. For once the dog did not seem to hear him. The animal had got up and now was standing braced, every nerve and muscle alert, gazing into the shadows beyond the river. Hugh’s hand fell on the shaggy neck, but the animal didn’t start. And the hair stood stiff like quills at the shoulders. “What is it, boy?” Hugh asked. The dog made no answer. Instead, a strange and terrible reply came from the wilderness. It was a dreadful, a commanding voice, and it seemed to freeze the whole forest world with horror. It obliterated the wind and silenced all the little voices to which Hugh had listened with such delight a moment before. It was a long, wild scream, beginning low in the scale and rising to an incredible height.