He could not even guess at his assailant, much less reach him.

A dozen men could be picked off by a rifle in the hands of one at the top, while they were climbing that bluff.
Even if one succeeded in reaching the foot of the rim-rock, there was a forty-foot wall of unscalable rock, with just the one narrow fissure where it was possible to climb up to the level above, by using both hands to cling to certain sharp projections while the feet sought a niche here and there in the wall.

Easy enough--if one were but left to climb in peace, but absolutely suicidal if an enemy stood above.
He scowled through the little paneless window at what he could see of the bluff, and thought of the mile-long grade to be climbed and the rough stretch of lava rock, sage, and scattered bowlders to be gone over before one could reach the place upon a horse.

Whoever was up there, he would have more than enough time to get completely away from the spot before it would be possible to gain so much as a glimpse of him.
And who could he be?
And why was he shooting at Good Indian, so far a non-combatant, guiltless of even firing a single shot since the trouble began?
Wally came in, his hat far back on his head, a cigarette in the corner of his mouth, and his manner an odd mixture of conciliation and defiance, ready to assume either whole-heartedly at the first word from the man he had cursed so unstintingly before he slept.

He looked at Good Indian, caught sight of the leaden pellet he was thoughtfully turning round and round in his fingers, and chose to ignore for the moment any unpleasantness in their immediate past.
"Where you ketchum ?" he asked, coming a bit closer.
"In the side of the chicken-house." Good Indian's tone was laconic.
Wally reached out, and took the bullet from him that he might juggle it curiously in his own fingers.