The locust thickets characteristic of these slopes were thorny and close knit. They tore and scratched and stung both horses and riders. Ranger appeared to be the most intelligent of the horses and suffered less. Bo's white mustang dragged her through more than one brambly place. On the other hand, some of these steep slopes, were comparatively free of underbrush. Great firs and pines loomed up on all sides. The earth was soft and the hoofs sank deep. Toward the bottom of a descent Ranger would brace his front feet and then slide down on his haunches. This mode facilitated travel, but it frightened Helen. The climb out then on the other side had to be done on foot. After half a dozen slopes surmounted in this way Helen's strength was spent and her breath was gone. She felt light-headed. She could not get enough air. Her feet felt like lead, and her riding-coat was a burden. A hundred times, hot and wet and throbbing, she was compelled to stop. Always she had been a splendid walker and climber. And here, to break up the long ride, she was glad to be on her feet. But she could only drag one foot up after the other. Then, when her nose began to bleed, she realized that it was the elevation which was causing all the trouble. Her heart, however, did not hurt her, though she was conscious of an oppression on her breast. At last Roy led into a ravine so deep and wide and full of forest verdure that it appeared impossible to cross. Nevertheless, he started down, dismounting after a little way. Helen found that leading Ranger down was worse than riding him. He came fast and he would step right in her tracks. She was not quick enough to get away from him. Twice he stepped on her foot, and again his broad chest hit her shoulder and threw her flat. When he began to slide, near the bottom, Helen had to run for her life. “Oh, Nell! Isn't--this--great?” panted Bo, from somewhere ahead. “Bo--your--mind's--gone,” panted Helen, in reply. Roy tried several places to climb out, and failed in each. Leading down the ravine for a hundred yards or more, he essayed another attempt. Here there had been a slide, and in part the earth was bare. When he had worked up this, he halted above, and called: “Bad place! Keep on the up side of the hosses!” This appeared easier said than done. Helen could not watch Bo, because Ranger would not wait. He pulled at the bridle and snorted. “Faster you come the better,” called Roy. Helen could not see the sense of that, but she tried. Roy and Bo had dug a deep trail zigzag up that treacherous slide. Helen made the mistake of starting to follow in their tracks, and when she realized this Ranger was climbing fast, almost dragging her, and it was too late to get above. Helen began to labor. She slid down right in front of Ranger. The intelligent animal, with a snort, plunged out of the trail to keep from stepping on her. Then he was above her. “Lookout down there,” yelled Roy, in warning. “Get on the up side!”