the boulder concealed,—and yet, Casey was not satisfied with the discovery. Unconsciously he reached for his gun. This, he told himself, must be the secret habitation of the fiend who shot from rim-rocks with terrible precision at harmless prospectors and their burros.

Casey squinted up at the sun and turned his level gaze again upon the cabin. Reason told him that the man with the rifle was still watching for a pot shot at him and Barney, and that there was nothing whatever to indicate the presence of only one man in the camp below. Had he been glimpsed once during the climb, he would have been fired upon; he would never have been given the chance to gain the top and find this cabin.

The place looked deserted. His practical, everyday mind told him it was empty for the time being. But he felt queer and uncomfortable, nevertheless. He sneaked along the ledge to the cabin, flattened himself against the corner next the gray boulder and waited there for a minute. He felt the flesh stiffening on his jaws as he crept up to the window to look in. By standing on his toes, Casey's eyes came on a level with the lowest inch of glass,—the window was so high.

Just at first Casey could not see much. Then, when his eyes had adjusted themselves to the half twilight within, his mind at first failed to grasp what he saw. Gradually a dimly sensed dread took hold of him, and grew while he stood there peering in at commonplace things which should have given him no feeling save perhaps a faint surprise.

A fairly clean, tiny room he saw, with a rough, narrow bed in one corner and a box table at its head. From the ceiling hung a lantern with the chimney smoked on one side and the warped, pole rafter above it slightly blackened to show how long the lantern had hung there lighted. A door opposite the tiny window was closed, and there was no latch or fastening on the inner side. An Indian blanket covered half the floor space, and in the corner opposite the bed was a queer, drumlike thing of sheet iron with a pipe running through the wall; some heating arrangement, Casey guessed.

In the center of the room, facing the window, a woman sat in a wooden rocking chair and rocked. A pale old woman with dark hollows under her eyes that were fixed upon the pattern of the Indian rug. Her hair was white. Her thin, white hands rested limply on the arms of the chair, and she was rocking back and forth, back and forth, steadily, quietly,—just rocking and staring at the Indian rug.

Casey has since told me that she was the creepiest thing he ever saw in his life. Yet he could not explain why it was so. The woman's face was not so old, though it was lined and without color. There was a terrible quiet in her features, but he felt, somehow, that her thoughts were not quiet. It was as if her thoughts were reaching out to him, telling him things too awful for her thin, hushed lips to let pass.

But after all, Casey's main object was to locate the man with the rifle, and to do it before he himself was seen on the butte. He watched a little longer the woman who rocked and rocked. Never once did her eyes move from that fixed point on the rug. Never once did her fingers move on the arm of the chair. Her mouth remained immobile as the lips of a dead woman. He had to force himself to leave the window; and when he did, he felt guilty, as if he had somehow deserted some one helpless and needing him. He sneaked back, lifted himself and took another long look. The old woman was rocking back and forth, her face quiet with that terrible, pent placidity which Casey could not understand.

Away from the cabin a pebble's throw, he shook his shoulders and pulled his mind away from her, back to the man with the rifle—and to Barney. Rocking in a chair never hurt anybody that he ever heard of. And shooting from rim-rocks did. And Barney was down there, holed up and helpless, though he had grub and water. Casey was up here in a mighty dangerous place without much grub or water but—he hoped—not quite helpless. His immediate, pressing job was not to peek through a high-up window at an old woman rocking back and forth in a chair, but to round up the man who was interfering with Casey's peaceful quest for—well, he called it wealth; but I think that adventure meant more to him.

He picked his way carefully along the edge of the rim-rock, keeping under cover when he could and watching always the country ahead. And without any artful description of his progress, I will simply say that Casey Ryan combed the edge of that rampart for two miles before dark, and found himself at last on the side farthest from Barney without having discovered the faintest trace of any living soul save the woman who rocked back and forth in the little, secret cabin.

Casey sat down on a rock, took a restrained drink from his canteen, and said everything he knew or could invent that was profane and condemnatory of his luck, of the unseen assassin, of the country and his present predicament. He got up, looked all around him, sniffed unavailingly for some tang of smoke in the thin, crisp air, reseated himself and said everything all over again.

Presently he rose and made his way straight across the butte, going slowly to lessen his chance of making a noise for unfriendly ears to hear, and with the stars for guidance.

CHAPTER FOUR

The night was growing cold, and Casey had no coat. At least he could go down and tell Barney what he had discovered and had failed to discover, and get something to eat. Barney would probably be worrying about him, though there was a chance that a bullet had found Barney before dark. Casey was uneasy, and once he was down the fissure again, he hurried as much as possible.

He managed to reach the camp by the little spring without being shot at and without breaking a leg. But Barney was not there. Just at first Casey believed he was dead; but a brief search told Casey that two of the largest canteens were gone, together with a side of bacon, some flour and all of the tobacco. White assassins would have made a more thorough job of robbing the camp. Barney, it was evident, had fled the fate of the burros.

Casey told the stars what he thought of a partner like Barney. Afterward he ate what was easiest to swallow without cooking, overhauled what was left of their outfit, cached the remainder in a clump of bushes, and wearily climbed the bluff again under a capacity load. He concealed himself in the bottom of the fissure to sleep, since he could search no farther.

If he thought wistfully of the palled comfort of his apartment in Los Angeles, and of the Little Woman there, he still did not think strongly enough to send him back to them. For with a canteen or two of water, some food and his two capable legs to carry him, Casey Ryan could have made it to Barstow easily enough. But because he was Casey Ryan, and Irish, and because he was always on the hunt for trouble without recognizing it when he met it in the trail, it never occurred to him to follow Barney down to safer country.

"That there Joshuay tree meant a lot more'n what it let on, pointin' up this way!" Casey muttered, staring down upon a somnolent wilderness blanketed with hushed midnight. "If it thinks it's got Casey whipped, it better think agin and think quick. I'll give it somethin' to point at, 'fore I leave this here butte.

"Funny, the way it kept pointin' up this way. I've saw Joshuays before—miles of 'em. But I never seen one that looked so kinda human and so kinda like it was tryin' to talk. Seems kinda funny; an' that old lady rockin' an' lookin'—seems like her an' the Joshuay has kinda throwed in together, hopin' somebody might come along with savvy enough to kinda—aw, hell!" So did Casey and his Irish belief in the supernatural fall plump against the limitations of his vocabulary.

Against the limitations proscribed by his material predicament, however, Casey Ryan set his face with a grin. Somebody was going to get the big jolt of