It seemed Ben’s fate this night to be just too late for service.  Before he reached the exit there sounded, spattering and intermittent, like the first popping kernels of corn in a pan, a succession of pistol-shots from the ranch-house.  There was no answer, and as he stepped out into the air the sound ceased.  As he did so, the kitchen of the house sprang alight from a lamp within.  There was a moment of apparent inactivity, and then, the door swinging open, fair against the lighted background, shading his eyes to look into the outer darkness, stood Rankin.  Instantly a wave of premonition flooded the watching Benjamin.

“Go back!” he shouted.  “Go back!  Back, quick!” and careless of personal danger, he started running for the ranch-house as before he had raced for the barn.

The warning might as well have been ungiven.  Almost before the last words were spoken there came from the darkness at Ben’s right the sound he had been expecting—­a single vicious rifle report; and as though a mighty invisible weight were crushing him down, Rankin sank to the floor.

Then for the first time in his history Ben Blair lost self-control.  Quick as thought he changed his course from the house to the direction from which the shot had come.  The great veins of his throat swelled until it seemed he could scarcely breathe.  Curses, horrible, blighting curses, combinations of malediction which had never even in thought entered his mind before, rolled from his lips.  His brain seemed afire.  But one idea possessed him—­to lay hands upon this intruding being who had in cold blood done that fiendish deed in the barn, and now had shot his best friend on earth.  The rage of primitive man who knew not steel or gunpowder was his; the ferocity of the great monkey, the aborigine’s predecessor, whose means of offence were teeth and nails.  Straight ahead the man rushed, seeming not to run, but fairly to bound, turned suddenly the angle at the corner of the machinery shed, stumbled over a snow-plough drawn up carelessly by one of the men, fell, regained his feet, and heard in his ears the thundering hoof-beats of a horse urged away at full speed.

For a moment Ben Blair stood as he had risen, gazing westward where the other had departed, but seeing nothing, not even a shadow.  Clouds had formed over the sky, and the night was of intense darkness.  To attempt to follow a trail now was waste of time; and gradually, as he stood there, the unevolved fury of the man transformed.  His tongue became silent; not a human being had heard the outburst.  The physical paroxysm relaxed.  As he returned to the ranch-house no observer would have detected in him other than the usual matter-of-fact rancher; yet beneath that calm was a purpose infinitely more terrible than the animal blaze of a few minutes before, a tenacity more relentless than a tiger on the trail of its quarry, than an Indian stalking his enemy; a formulated purpose which could patiently wait, but eventually and inevitably would grind its object to powder.