"Hyar, Moze! Come down out of that!" hoarsely shouted Jones. Moze had begun to climb the thick, many-branched, low pinyon tree. He paid not the slightest attention to Jones, who screamed and raged at him. "Cover the lion!" cried he to me. "Don't shoot unless he crouches to jump on me." The little beaded front-sight wavered slightly as I held my rifle leveled at the grim, snarling face, and out of the corner of my eye, as it were, I saw Jones dash in under the lion and grasp Moze by the hind leg and haul him down. He broke from Jones and leaped again to the first low branch. His master then grasped his collar and carried him to where we stood and held him choking. "Boys, we can't keep Tom up there. When he jumps, keep out of his way. Maybe we can chase him up a better tree." Old Tom suddenly left the branches, swinging violently; and hitting the ground like a huge cat on springs, he bounded off, tail up, in a most ludicrous manner. His running, however, did not lack speed, for he quickly outdistanced the bursting hounds. A stampede for horses succeeded this move. I had difficulty in closing my camera, which I had forgotten until the last moment, and got behind the others. Satan sent the dust flying and the pinyon branches crashing. Hardly had I time to bewail my ill-luck in being left, when I dashed out of a thick growth of trees to come upon my companions, all dismounted on the rim of the Grand Cañon. "He's gone down! He's gone down!" raged Jones, stamping the ground. "What luck! What miserable luck! But don't quit; spread along the rim, boys, and look for him. Cougars can't fly. There's a break in the rim somewhere." The rock wall, on which we dizzily stood, dropped straight down for a thousand feet, to meet a long, pinyon-covered slope, which graded a mile to cut off into what must have been the second wall. We were far west of Clarke's trail now, and faced a point above where Kanab Cañon, a red gorge a mile deep, met the great cañon. As I ran along the rim, looking for a fissure or break, my gaze seemed impellingly drawn by the immensity of this thing I could not name, and for which I had as yet no intelligible emotion. Two "Waa-hoos" in the rear turned me back in double-quick time, and hastening by the horses, I found the three men grouped at the head of a narrow break. "He went down here. Wallace saw him round the base of that tottering crag." The break was wedge-shaped, with the sharp end off toward the rim, and it descended so rapidly as to appear almost perpendicular. It was a long, steep slide of small, weathered shale, and a place that no man in his right senses would ever have considered going down. But Jones, designating Frank and me, said in his cool, quick voice: "You fellows go down. Take Jude and Sounder in leash. If you find his trail below along the wall, yell for us. Meanwhile, Wallace and I will hang over the rim and watch for him."