The searching party was already on the way over to Pine Glen, when Brian Oakley stopped at Sibyl's old home for Aaron King. The Ranger, himself, had waited to receive the morning message from the Sheriff.

When the two men, following the Government trail that leads to the neighborhood where the girl's horse had been found, reached the fire-break on the summit of the Galenas, the officer said, "Aaron, you'll be of little use over there in that Pine Glen country, where you have never been." He had pulled up his horse and was looking at his companion, steadily.

"Is there nothing that I can do, Brian?" returned the young man, hopelessly. "God, man! I _must_ do something! I _must_, I tell you!"

"Steady, old boy, steady," returned the mountaineer's calm voice. "The first thing you must do, you know, is to keep a firm grip on yourself. If you lose your nerve I'll have you on my hands too."

Under his companion's eye, the artist controlled himself. "You're right, Brian," he said calmly. "What do you want me to do? You know best, of course."

The officer, still watching him, said slowly, "I want you to spend the day on that point, up there,"--he pointed to the clump of pines,--"with this glass." He turned to take an extra field-glass from his saddle. Handing the glass to the other, he continued "You can see all over the country, on the Galena Valley side of this range, from there." Again he paused, as though reluctant to give the final word of his instructions.

The young man looked at him, questioningly. "Yes?"

The Ranger answered in a low tone, "You are to watch for buzzards, Aaron."

Aaron King went white. "Brian! You think--"

The answer came sharply, "I am not thinking. I don't dare think. I am only recognizing every possibility and letting nothing, _nothing_, get away from me. I don't want _you_ to think. I want you to do the thing that will be of greatest service. It's because I am afraid you will _think_, that I hesitate to assign you to the position."

The sharp words acted like a dash of cold water in the young man's face. Unconsciously, he straightened in his saddle. "Thank you, Brian. I understand. You can depend upon me."

"Good boy!" came the hearty and instant approval. "If you see anything, go to it; leaving a note here, under a stone on top of this rock; I'll find it to-night, when I come back. If nothing shows up, stay until dark, and then go down to Carleton's. I'll be in late. The rest of the party will stay over at Pine Glen."

Alone on the peak where he had sat with Sibyl the day of their last climb, Aaron King watched for the buzzards' telltale, circling flight--and tried not to think.

It was one o'clock when the artist--resting his eyes for a moment, after a long, searching look through the glass--caught, again, that flash of light in the blue haze that lay over Fairlands in the distant valley. Brian Oakley had said,--when they had seen it that first day of the search,--that it was a common sight; but the artist, his mind preoccupied, watched the point of light with momentary, idle interest.

Suddenly, he awoke to the fact that there seemed to be a timed regularity in the flashes. Into his mind came the memory of something he had read of the heliograph, and of methods of signalling with mirrors Closely, now, he watched--three flashes in quick succession--pause--two flashes--pause--one flash--pause--one flash--pause--two flashes--pause--three flashes--pause. For several minutes the artist waited, his eyes fixed on the distant spot under the haze. Then the flashes began again, repeating the same order: --- -- - - -- ---.

At the last flash, the man sprang to his feet, and searched the mountain peaks and spurs behind him. On lonely Granite Peak, at the far end of the Galena Range, a flash of light caught his eye--then another and another. With an exclamation, he lifted his glass. He could distinguish nothing but the peak from which had come the flashes. He turned toward the valley to see a long flash and then--only the haze and the dark spot that he knew to be the orange groves about Fairlands.

Aaron King sank, weak and trembling, against the rock. What should he do? What could he do? The signals might mean much. They might mean nothing. Brian Oakley's words that morning, came to him; "I am recognizing every possibility, and letting nothing _nothing_, get away from me." Instantly, he was galvanized into life. Idle thinking, wondering, conjecturing could accomplish nothing.

Riding as fast as possible down to the boulder beside the trail, where he was to leave his message, he wrote a note and placed it under the rock. Then he set out, to ride the fire-break along the top of the range, toward the distant Granite Peak. An hour's riding took him to the end of the fire-break, and he saw that from there on he must go afoot.

Tying the bridle-reins over the saddle-horn, and fastening a note to the saddle, in case any one should find the horse, he turned the animal's head back the way he had come, and, with a sharp blow, started it forward. He knew that the horse--one of Carleton's--would probably make its way home. Turning, he set his face toward the lonely peak; carrying his canteen and what was left of his lunch.

There was no trail for his feet now. At times, he forced his way through and over bushes of buckthorn and manzanita that seemed, with their sharp thorns and tangled branches, to be stubbornly fighting him back. At times, he made his way along some steep slope, from pine to pine, where the ground was slippery with the brown needles, and where to lose his footing meant a fall of a thousand feet. Again, he scaled some rocky cliff, clinging with his fingers to jutting points of rock, finding niches and projections for his feet; or, with the help of vine and root and bush, found a way down some seemingly impossible precipice. Now and then, from some higher point, he sighted Granite Peak. Often, he saw, far below, on one hand the great canyon, and on the other the wide Galena Valley. Always he pushed forward. His face was scratched and stained; his clothing was torn by the bushes; his hands were bloody from the sharp rocks; his body reeked with sweat; his breath came in struggling gasps; but he would not stop. He felt himself driven, as it were, by some inner power that made him insensible to hardship or death. Far behind him, the sun dropped below the sky-line of the distant San Gabriels, but he did not notice. Only when the dusk of the com............