rank green of rich soil and mild air—it was a yellowish green, a colour at once tender and glowing. It spread everywhere across the plains about Elkhead, broken here and there by the projecting boulders which flashed in the sun. So a great battlefield might appear, pockmarked with shell-holes, and all the scars of war freshly cut upon its face. And in truth the mountain desert was like an arena ready to stage a conflict—a titanic arena with space for earth-giants to struggle—and there in the distance were the spectator mountains. High, lean-flanked mountains they were, not clad in forests, but rather bristling with a stubby growth of the few trees which might endure in precarious soil and bitter weather, but now they gathered the dignity of distance about them. The grass of the foothills was a faint green mist about their feet, cloaks of exquisite blue hung around the upper masses, but their heads were naked to the pale skies. And all day long, with deliberate alteration, the garb of the mountains changed. When the sudden morning came they leaped naked upon the eye, and then withdrew, muffling themselves in browns and blues until at nightfall they covered themselves to the eyes in thickly sheeted purple—Tyrian purple—and prepared for sleep with their heads among the stars.
Something of all this came to Doctor Randall Byrne as he rode, for it seemed to him that there was a similarity between these mountains and the girl beside him. She held that keen purity of the upper slopes under the sun, and though she had no artifice or careful wiles to make her strange, there was about her a natural dignity like the mystery of distance. There was a rhythm, too, about that line of peaks against the sky, and the girl had caught it; he watched her sway with the gallop of her horse and felt that though she was so close at hand she was a thousand miles from him. She concealed nothing, and yet he could no more see her naked soul than he could tear the veils of shadow from the mountains. Not that the doctor phrased his emotions in words. He was only conscious of a sense of awe and the necessity of silence.
A strange feeling for the doctor! He came from the region of the mind where that which is not spoken does not exist, and now this girl was carrying him swiftly away from hypotheses, doubts, and polysyllabic speech into the world—of what? The spirit? The doctor did not know. He only felt that he was about to step into the unknown, and it held for him the fascination of the suspended action of a statue. Let it not be thought that he calmly accepted the sheer necessity for silence. He fought against it, but no words came.
It was evening: the rolling hills about them were already dark; only the heads of the mountains took the day; and now they paused at the top of a rise and the girl pointed across the hollow. "There we are," she said. It was a tall clump of trees through which broke the outlines of a two-storied house larger than any the doctor had seen in the mountain-desert; and outside the trees lay long sheds, a great barn, and a wide-spread wilderness of corrals. It struck the doctor with its apparently limitless capacity for housing man and beast. Coming in contrast with the rock-strewn desolation of the plains, this was a great establishment; the doctor had ridden out with a waif of the desert and she had turned into a princess at a stroke. Then, for the first time since they left Elkhead, he remembered with a start that he was to care for a sick man in that house.
"You were to tell me," he said, "something about the sickness of your father—the background behind his condition. But we've both forgotten about it."
"I have been thinking how I could describe it, every moment of the ride," she answered. Then, as the gloom fell more thickly around them every moment, she swerved her horse over to the mare, as if it were necessary that she read the face of the doctor while she spoke.
"Six months ago," she said, "my father was robust and active in spite of his age. He was cheerful, busy, and optimistic. But he fell into a decline. It has not been a sudden sapping of his strength. If it were that I should not worry so much; I'd attribute it to disease. But every day something of vitality goes from him. He is fading almost from hour to hour, as slowly as the hour hand of a clock. You can't notice the change, but every twelve hours the hand makes a complete revolution. It's as if his blood were evaporating and nothing we can do will supply him with fresh strength."
"Is this attended by irritability?"
"He is perfectly calm and seems to have no care for what becomes of him."
"Has he lost interest in the things which formerly attracted and occupied him?"
"Yes, he minds nothing now. He has no care for the condition of the cattle, or for profit or loss in the sales. He has simply stepped out of every employment."
"Ah, a gradual diminution of the faculties of attention."
"In a way, yes. But also he is more alive than he has ever been. He seems to hear with uncanny distinctness, for instance."
The doctor frowned.
"I was inclined to attribute his decline to the operation of old age," he remarked, "but this is unusual. This—er—inner acuteness is accompanied by no particular interest in any one thing?".
As she did not reply for the moment he was about to accept the silence for acquiescence, but then through the dimness he was arrested by the lustre of her eyes, fixed, apparently, far beyond him.
"One thing," she said at length. "Yes, there is one thing in which he retains an interest."
The doctor nodded brightly.
"Good!" he said. "And that—?"
The silence fell again, but this time he was more roused and he fixed his eyes keenly upon her through the gloom. She was deeply troubled; one hand gripped the horn of her saddle strongly; her lips had parted; she was like one who endures inescapable pain. He could not tell whether it was the slight breeze which disturbed her blouse or the rapid panting of her breath.
"Of that," she said, "it is hard to speak—it is useless to speak!"
"Surely not!" protested the doctor. "The cause, my dear madame, though perhaps apparently remote from the immediate issue, is of the utmost significance in diagnosis."
She broke in rapidly: "This is all I can tell you: he is waiting for something which will never come. He has missed something from his life which will never come back into it. Then why should we discuss what it is that he has missed."
"To the critical mind," replied the doctor calmly, and he automatically adjusted his glasses closer to his eyes, "nothing is without significance."
"It is nearly dark!" she exclaimed hurriedly. "Let us ride on."
"First," he suggested, "I must tell you that before I left Elkhead I heard a hint of some remarkable story concerning a man and a horse and a dog. Is there anything—"
But it seemed that she did not hear. He heard a sharp, low exclamation which might have been addressed to her horse, and the next instant she was galloping swiftly down the slope. The doctor followed as fast as he could, jouncing in the saddle until he was quite out of breath.
CHAPTER IV
THE CHAIN
They had hardly passed the front door of the house when they were met by a tall man with dark hair and dark, deep-set eyes. He was tanned to the bronze of an Indian, and he might have been termed handsome had not his features been so deeply cut and roughly finished. His black hair was quite long, and as the wind from the opened door stirred it, there was a touch of wildness about the fellow that made the heart of Randall Byrne jump. When this man saw the girl his face lighted, briefly; when his glance fell on Byrne the light went out.
"Couldn't get the doc, Kate?" he asked.
"Not Doctor Hardin," she answered, "and I've brought Doctor Byrne instead."
The tall man allowed his gaze to drift leisurely from head to foot of Randall Byrne.
Then: "H'ware you, doc?" he said, and extended a big hand. It occurred to Byrne that all these men of the mountain-desert were big; there was something intensely irritating about their mere physical size; they threw him continually on the defensive and he found himself making apologies to himself and summing up personal merits. In this case there was more direct reason for his anger. It was patent that the man did not weight the strange doctor against any serious thoughts.
"And this," she was saying, "is Mr. Daniels. Buck, is there any change?"
"Nothin'