The thunderous rolling sound approached, heavy as that of artillery going into action. We saw dust arise from the mouth of a little draw on the left, running down toward the valley, and even as we turned there came rolling from its mouth, with the noise of a tornado and the might of a mountain torrent, a vast, confused, dark mass, which rapidly spilled out across the valley ahead of us. Half hid in the dust of their going, we could see great dark bulks rolling and tossing. Thus it was, and close at hand, that I saw for the first time in my life these huge creatures whose mission seemed to have been to support an uncivilized people, and to make possible the holding by another race of those lands late held as savage harvest grounds.

We were almost at the flanks of the herd before they reached the river bank. We were among them when they paused stupidly, for some reason not wishing to cross the stream. The front ranks rolled back upon those behind, which, crowded from the rear, resisted. The whole front of the mass wrinkled up mightily, dark humps arising in some places two or three deep. Then the entire mass sensed the danger all at once, and with as much unanimity as they had lacked concert in their late confusion, they wheeled front and rear, and rolled off up the valley, still enveloped in a cloud of white, biting dust.

In such a chase speed and courage of one's horse are the main essentials. My horse, luckily for me, was able to lay me alongside my game within a few hundred yards. I coursed close to a big black bull and, obeying injunctions old Auberry had often given me, did not touch the trigger until I found I was holding well forward and rather low. I could scarcely hear the crack of the rifle, such was the noise of hoofs, but I saw the bull switch his tail and push on as though unhurt, in spite of the trickle of red which sprung on his flank. As I followed on, fumbling for a pistol at my holster, the bull suddenly turned, head down and tail stiffly erect, his mane bristling. My horse sprang aside, and the herd passed on. The old bull, his head lowered, presently stopped, deliberately eying us, and a moment later he deliberately lay down, presently sinking lower, and at length rolled over dead.

I got down, fastening my horse to one of the horns of the dead bull. As I looked up the valley, I could see others dismounted, and many vast dark blotches on the gray. Here and there, where the pursuers still hung on, blue smoke was cutting through the white. Certainly we would have meat that day, enough and far more than enough. The valley was full of carcasses, product of the wasteful white man's hunting. Later I learned that old Mandy, riding a mule astride, had made the run and killed a buffalo with her own rifle!

I found the great weight of the bull difficult to turn, but at length I hooked one horn into the ground, and laying hold of the lower hind leg, I actually turned the carcass on its back. I was busy skinning when my old friend Auberry rode up.

"That's the first time I ever saw a bull die on his back," said he.

"He did not die on his back," I replied. "I turned him over."

"You did—and alone? It's rarely a single man could do that, nor have I seen it done in all my life with so big a bull."

I laughed at him. "It was easy. My father and I once lifted a loaded wagon out of the mud."

"The Indians," said Auberry, "don't bother to turn a bull over. They split the hide down the back, and skin both ways. The best meat is on top, anyhow"; and then he gave me lessons in buffalo values, which later I remembered.