Several months after the death of One Horn, a herd of buffaloes drifted into the upper end of the bottom and gave him a chance to try Is-spai-u. Word spread that my uncle was going to run the buffaloes, and when he rode out from the fort all the men followed him who had horses or could borrow them. I shall not go into the details of that run, but will simply say that when it ended twenty-seven buffaloes lay strung along the plain with my uncle's arrows in them! It was the best run ever made in the whole Northwest, so far as was known, and the success of it was owing more to the swiftness and endurance of Is-spai-u than to the skill of my uncle with the bow. The reputation of the black horse was established. Through visiting Kootenay Indians it spread to all the west-side tribes, the Kalispels, Nez Percés, and Snakes. When bands from the Blackfoot tribes came into the fort at different times in order to trade, the first request of the chiefs and warriors was for a sight of the wonderful animal. In time our engagés took word of him to our different forts along the river, and thus all the other tribes, Sioux, Assiniboins, Crows, Crees, and Yanktonnais, came to know about him. Deputations from all the tribes that were at peace with the Blackfeet came to the fort and made fabulous offers for the animal. At the risk of their lives, some Snakes brought in one hundred and ten good ordinary horses that they wanted to trade for the black runner. A chief of the Yanktonnais, then trading mostly with the Hudson's Bay Company at their Assiniboin River post, sent word that he would give two hundred horses for him. My uncle's one answer to all of the would-be purchasers was that the black was not for sale. We soon heard that many a warrior of the tribes hostile to the Blackfeet had vowed to get the horse in one way or another. Within a year three desperate attempts were made to steal him right out from the fort, and the last raiders, three Assiniboins, paid for the attempt with their lives. On the evening before we left Fort Benton George Steell had begged my uncle to leave Is-spai-u in his care. "You know how flies swarm about a molasses keg. Well, so will the hostiles swarm about you down there when they learn that the runner is with you. Be sensible for once, Wesley, and let me have him until your fort is completed." "George, I know you mean well," my uncle replied, "but, consarn it, you're too reckless! You would cripple him in no time. Is-spai-u goes with me!" Half angry at that, Steell shrugged his shoulders and turned away from us without another word. My uncle had been right in refusing him the use of the animal; he was the most reckless, hard-riding buffalo hunter in all the country. After this explanation, you can imagine my pride and happiness in mounting Is-spai-u for the first time. He was eager to go; I let him have the bit. "Well, almost-brother," I said to Pitamakan, "we are off upon discovery. Which way shall we go?"