All the great tribes of the Columbia plains west of the Nez Perces had broken out, the Cayuses, Yakimas, Palouses, Walla Wallas, Umatillas, and Klickitats. They had swept the country clean of whites. The ride of Pearson from The Dalles to the point where he reached Governor Stevens is one of the most thrilling in the annals of the River. By riding all day and night, he reached a horse ranch on the Umatilla belonging to a noted half-breed Indian, William McKay, but he found the place deserted. Seeing a splendid horse in the bunch near by, he lassoed and saddled him. Though the horse was as wild as air, Pearson managed to mount and start on. Just then there swept into view a force of Indians who, instantly divining what Pearson was trying to do, gave chase. Up and down hill, through vale, and across the rim-rock, they followed, sending frequent bullets after him, and yelling like demons, "Whupsiah si-ah-poo, Whup-si-ah!" ("Kill the white man!") But the wild horse which the intrepid rider bestrode proved his salvation, for he gradually outran all his pursuers. Travelling through the Walla Walla at night Pearson reached the camp of friendly Nez Perce Red Wolf on the Alpowa the next day, having ridden two hundred miles from The Dalles without stopping except the brief time changing horses. Snow and hunger now impeded his course. Part of the way he had to go on snowshoes without a horse. But with unflinching resolution he passed on, and so now here he was with his dismal tidings. The despatches warned Governor Stevens that Kamiakin with a thousand warriors was in the Walla Walla Valley and that it would be impossible for him to get through by that route, and that he must therefore return to the East by the Missouri and come back to his Territory by the steamer route of Panama. That meant six months' delay. With characteristic boldness, Governor Stevens at once rejected the more cautious course and went right back to Spokane by the Coeur d'Alene Pass, deep already with the winter snows, suffering intensely with cold and hunger, but avoiding by that route the Indians sent out to intercept him. With extraordinary address, he succeeded in turning the Spokane Indians to his side. The Nez Perces, thanks to Lawyer's fidelity, were still friendly, and with these two powerful tribes arrayed against the Yakimas, there was still hope of holding the Columbia Valley.