The whole country was a black, moving mass. The earth trembled to their tread and roar. Sometimes the clouds of dust from the dustpans as the bulls pawed the earth, rose in the air like smoke from a prairie-fire. It seemed impossible, and yet here was the fact, or rather thousands of them; for every bull and cow and calf was a reality, and so was this long line of strangely equipped Indians on either side of me, and so was I, for my horse became excited with the sight and smell of the great herds, and I found myself a living fact on a very lively steed. As our line moved down the slope, the outer fringe of buffalo fell back on the larger herds, until there seemed to be one living wall before us. Presently the captain of the hunt gave the command, "Alight! see to your girths and arms, and make ready!" I watched my companions, and as they did so did I. They tightened their girths, and then they began to look to their arms. Most of them had bow and quiver, and I turned to one with a gun and watched him. He rubbed his steel and pointed his flint, then took from his ball-pouch some balls, selected some of them, and put these in his mouth. I took several balls from my pouch, selected six, and put them in my mouth. These balls were heavy (twenty-eight to the pound), "but when you are in Rome you must do as Romans do." In a very short time our captain called, "Mount!" and we formed in one long line; and if it had been ten miles long the buffalo would have extended away beyond. If these huge animals had only known their power and estimated their numbers, our line would have been overwhelmed and trampled under foot in a very short time. Instead of this, they moved away as we advanced, increasing their speed as they went, and, following our captain, we increased ours. The horses were all excitement; the men were pale, nervous and quiet. Under foot was rough ground, and there were any number of badger holes. The possibilities were, being shot, or thrown, or gored. Now we were at half speed, line as yet unbroken, every eye on the captain. Suddenly he held his gun in the air and shouted, "Ah-ah-_how_," putting strong emphasis on the last syllable, and away we went, every man for himself. Whips flew; horses tried to. Men were sitting well forward, and seemed to go ahead of their steeds. We were in the dust-cloud, eyes and ears and nose filled with it; then we were through, and here were the buffalo speeding before us. Already the fast horses were into the herd. The swish of an arrow, the blast of an old flint-lock, and the wounded animals jumped aside, streams of blood gushing from their nostrils and mouths, showing that they were mortally hit; others fell dead as soon as shot; others had either a fore or hind leg broken, and stood around at bay challenging another shot--and thus the carnage went on, thicker and faster as the slow-mounted hunters came up. [Illustration: THE BUFFALO HUNT]