been the price he had paid for the right, which was the right of every man, to choose for himself, and to take to himself and to wife, the woman who seemed to him to be the one creature in the world who could yield him the happiness which alone was worth while.

This talk of a man's price only enraged him the more. He viciously detested Ju Penrose, and all such creatures who walked the world.

Well, the reward was out. Time would show. If it failed to find the Judas he would remind Ju. Oh, yes, he would remind him. He would wait his time for the reminder. He would wait till the saloon was full, and then—then he would open out his batteries. Men were of——

What was that?

He had pulled his horse up with a swift tightening of his hand. Now the beast stood with head erect, and pricked ears firmly thrust forward. Its head was turned southward, and the gush of its distended nostrils warned its rider that his question was shared by a creature whose instincts were even more acute, here, on the prairie, than those of its human master.

Bob bent down in the saddle the better to obtain the silhouette of the sky-line. The sound which had held him came up on the southern night breeze. It was a low murmur, or rumble, and, to his accustomed ears, it suggested the speeding of hoofs over the green clad earth. He waited for many moments, but the sound only increased. There was no doubt left in his mind now. None at all.

He sat up again and glanced swiftly about him. The moonlight had increased, and a silver sheen threw up the surrounding scene into indistinct relief. Beyond, to his right, he detected a small patch of scrub and spruce, and, without a second thought, he made for it.

A minute later he was out of the saddle beside his horse, screened from view of the plains by a belt of bush. He secured his horse and moved to the fringe of his shelter. Here he took up a position facing south, and his view of the plains beyond became uninterrupted.

He knew what was coming. Instinct warned him. Perhaps even it was the wish fathering his belief. He felt it was a certainty that the rustlers were out pursuing their depredations with their customary unchallenged daring. Who, he wondered, was the present victim, and what was the extent of the raid?

He had not long to wait. The sound grew. It lost its distant continuity and became broken into the distinct hoof beats of large numbers. Furthermore, by the sound of it, they would pass right across his front. He had been wise in seeking cover. Had he remained——

But speculation gave way before the interest of movement. Now the silhouette of the sky-line was dancing before his eyes. In the moonlight he could clearly make out the passing of a driven herd. It came on, losing itself in the shadows of a distant trough. Again it appeared. More distinct now. He whistled under his breath. They were coming from the direction of Dug McFarlane's and it was a large herd. They were traveling northwest, which would cut into the hills away to the north of his homestead. They——

But they were almost abreast of him now, and he heard the voices of men urging and cursing. Lower he dropped toward the earth the better to ascertain the numbers. But his estimate was uncertain. There were moments when the herd looked very large. There were moments when it looked less. He felt that a conservative estimate would be one hundred perhaps, and some eight or ten men driving them.

They were gone as they had come, lumbering rapidly, and as they passed northward the southern breeze carried the sound away. It died out quickly, and for minutes longer than was needed he stood listening, listening. Then, at last, he turned back to his horse.

In the two years of his sojourn on the land it was the first time he had witnessed the operation of the Lightfoot gang, and it left a deep impression upon his mind. A great resentment rose up in him. It was the natural temper of a man who is concerned, in however small a degree, in the cattle industry. And his anger urged him to a greater speed for home, and a greater sympathy for the man who was prepared to accept the Judas money offered for the lives of this gang of criminals.

CHAPTER III

TRAILING THE "BLACK TAIL"

The woman started. She threw up her head. Her wide eyes, wonderful and dark, searched the deep aisles of the shaded pine woods about her. Her hair hung loosely in a knot at the nape of her neck, and its intensely dark masses made an exquisite framing for the oval of the handsome face beneath the loose brim of wide prairie hat.

The stillness of these wooded slopes of the Cathills was profound. They possessed something of the solemnity belonging to the parent range of the Rockies beyond. For they were almost primeval. The woman might have belonged to them, her dark beauty so harmonized with its surroundings. Yet for all her coloring, for all the buckskin she wore for upper garment, there was nothing in her nature of the outlands which now claimed her. She was of the cities. She was bred and nurtured in the civilized places. The life about her was another life. It was crude and foreign to her. It claimed her by force of circumstance against every instinct and emotion.

Her searching ceased, and her eyes fixed their steady regard upon a gray-brown object moving amongst the myriad of black stanchions which supported the tousled roof of melancholy green foliage above her. With an almost imperceptible movement one buckskin clad arm reached slowly out toward the small sporting rifle which leaned against an adjacent tree-trunk. Her whole poise was tense and steady. There was in her attitude that hard decision which one associates only with the experienced hunter. There was almost too much decision in a woman so obviously young.

The weapon was drawn toward her. For one brief moment it was laid across her lap upon the paper-covered book she had been reading. Then its butt found its way to a resting place against her soft shoulder. Not for an instant had her gaze been diverted from the moving object. Now, however, her head inclined forward, and her warm cheek was laid against the cool butt. The sights of the weapon were brought up into line. The pressure of her forefinger was increased upon the trigger. There was a sharp report followed by a swift rush of scampering hoofs amongst the brittle pine cones and needles which carpeted the twilit woods. Then, in a flash, all the tense poise gave way to considered but rapid activity.

The woman sprang to her feet. She was tall and straight as a willow. Her rough canvas skirt was divided. Her buckskin shirt was fringed and beaded. She made a picture of active purpose that belied her femininity. In a moment she was in the saddle of the pony which had been dozing a few yards away. Her rifle was slung upon one shoulder, and her paper-covered book was thrust within the fastenings of her shirt. She was hot in pursuit of the small black-tailed deer which her shot had wounded.

Effie bent low in the saddle which she rode astride. Her well-accustomed pony twisted and turned, threading its way almost miraculously through the labyrinth of bald tree-trunks. These pot-hunts, which were of such frequent occurrence, were the recreation which alone made life tolerable to its mistress.

The woman saw only her quarry. For the rest she left the road to her pony. With slack reins she leaned forward, carrying her featherweight over the horn of the saddle. The woods meant nothing to her. The maze of tree-trunks as they sped by conveyed no threat of danger. She was concerned only with the obviously limping beast which was to provide venison