Conversation ceased until the cowboy pointed to a high peak.

"See that peak up yonder? An ol' fellow lived thar fifteen years prospectin' for gold. Stayed all alone. He was always cocksure he was goin' to find a big mine someday. Some one called him Monty Cristy, and the name stuck to him like a cockle-burr in a horse's mane. One day I was deer-huntin' and run into his camp. He had a dugout in the side of the mountain and a tunnel whar he'd been prospectin'. I went into the tunnel to look at the ore, and found him sittin' thar against the side wall. His pick was across his knees and a piece of ore in his hand, but he had been dead over a week. I buried him up thar."

"Was the mine ever developed?"

"Twarn't nothin' to develope. The bit of rock in his hand was like all the stuff on the dump outside the tunnel. Plum worthless. Chock full of iron pyrites—not worth a damn. 'Fools' Gold' is what the miners calls it."

The cowboy leaned over and petted his pony's neck gently, then straightened up in the saddle and went on; "I've often wondered whether ol' Monty knowed at the last that it was only 'Fools' Gold.' Thar's a heap of people besides ol' Monty that keeps on diggin', hopin' for a strike and gettin' nothin' but 'Fools' Gold.' Tain't no use talkin' to them. It's the lucky ones what don't find out the truth, after they've put in the best of their lives workin' on a false lead."

Powell's thoughts went back to the woman at the Circle Cross, and he answered soberly, "You are right, Limber."

A number of buzzards circled in the cañon a short distance ahead of them, but not directly on the trail. Limber called the doctor's attention to them, and added, "We'd better go over and see what it is that interests them. Maybe only a dead cow; but when the Indians is out, you never know what you're running into. You learn not to pass anythin' by when you find buzzards."

They left the trail, worked through the dense underbrush that was matted with dead grass and other debris from past heavy floods. Buzzards flew up thickly at their approach. Then they sat looking down at a grey horse huddled in the rocks. Saddle and bridle were gone. A few feet away was the body of an old man, his white hair clotted with blood from a bullet wound in the left temple; his sightless grey eyes upturned to the blue skies, as though in mute questioning.

"God!" ejaculated Limber, as he leaped from his horse. "It's ol' Doctor King! Damn them Apaches!"

Powell's shock was not less than the cowboy's, and he knelt beside the body of the man whom he had hoped to work with at the Springs. He did not think of the annihilation of his own plans, but the things he had heard of the kindly old man. Death had been instantaneous. The bullet had entered the left temple, ranged downward and out behind the right ear. The two men looked at each other, then Powell's eyes went up to the broken side of the cañon. From back of one of those rocks had sped the messenger of death, with no warning to the old doctor who was on his errand of mercy to a little Mexican baby.