“It ain’t no trick to kill buffalo,” Slingerland was saying to his friends.  “But I don’t want old bulls an’ old cows killed.  An’ when you’re ridin’ fast an’ the herd is bunched it’s hard to tell the difference.  You boys stick close to me an’ watch me first.  An’ keep one eye peeled fer Injuns!”

Slingerland approached the herd without alarming it, until some little red calves on the outskirts of the herd became frightened.  Then the herd lumbered off, raising a cloud of dust.  The roar of hoofs was thunderous.

“Ride!” yelled Slingerland.

Not the least interesting sight to Neale was Larry riding away from them.  He was whacking the buffalo on the rumps with his bare hand before Slingerland and Neale got near enough to shoot.

At the trapper’s first shot the herd stampeded.  Thereafter it took fine riding to keep up, to choose the level ground, and to follow Slingerland’s orders.  Neale got up in the thick of the rolling din and dust.  The pursuit liberated something fierce within him which gave him a measure of freedom from his constant pain.  All before spread the great bobbing herd.  The wind whistled, the dust choked him, the gravel stung his face, the strong, even action of his horse was exhilarating.  He lost track of Larry, but he stayed close to Slingerland.  The trapper kept shooting at intervals.  Neale saw the puffs of smoke, but in the thundering din he could not hear a report.  It seemed impossible for him to select the kind of buffalo Slingerland wanted shot.  Neale could not tell one from the other.  He rode right upon their flying heels.  Unable, finally, to restrain himself from shooting, he let drive and saw a beast drop and roll over.  Neale rode on.

Presently out of a lane in the dust he thought he saw Slingerland pass.  He reined toward the side.  Larry was riding furiously at him, and Slingerland’s horse was stretched out, heading straight away.  The trapper madly waved his arms.  Neale spurred toward them.  Something was amiss.  Larry’s face flashed in the sun.  He whirled his horse to take Neale’s course and then he pointed.

Neale thrilled as he looked.  A few hundred rods in the rear rode a band of Sioux, coming swiftly.  A cloud of dust rose behind them.  They had, no doubt, been hiding in the vicinity of the grazing buffalo, lying in wait.

As Neale closed in on Larry he saw the cowboy’s keen glance measuring distance and speed.

“We shore got to ride!” was what Larry apparently yelled, though the sound of words drifted as a faint whisper to Neale.  But the roar of buffalo hoofs was rapidly diminishing.