But there was one such night when he felt troubled. As he rode up the Tusas Canyon at twilight, a sense of insecurity came over him, amounting almost to fear. He had had a somewhat similar feeling once when a panther had trailed him on a winter night. Now, as then, he had no idea what it was that menaced him; he was simply warned by that sixth sense which belongs to all wild things, and to men in whom there remains something of the feral. His horses shared his unrest. When he picketed them, just before dark, they fed uneasily, stopping now and then to stand like statues with lifted heads, testing the wind with their nostrils, moving their ears to catch some sound beyond human perception. When he had eaten his supper and made his bed, Ramon took the little automatic revolver out of its scabbard and went down the canyon a quarter of a mile, slipping along in the shadow of the brush that lined the banks of the stream. This was necessary because a half-moon made the open glades bright. He paused and peered a dozen times. So cautious were his movements that he came within forty feet of a drinking deer, and was badly startled when it bounded away with a snort and a smashing of brush. But he saw nothing dangerous and went back to his camp and to bed. There he lay awake for an hour, still troubled, oppressed by a vague feeling of the littleness and insecurity of human life. A long, rippling snort of fear from his saddle horse, picketed near his bed, awakened him and probably saved his life. When he opened his eyes, he saw the figure of a man standing directly over him. He was about to speak, when the man lifted his arms, swinging upward a heavy club. With quick presence of mind, Ramon jerked the blankets and the heavy canvas tarpaulin about his head, at the same time rolling over. The club came down with crushing force on his right shoulder. He continued to roll and flounder with all his might, going down a sharp slope toward the creek which was only a few yards away. Twice more he felt the club, once on his arm and once on his ribs, but his head escaped and the heavy blankets protected his body. The next thing he knew, he had gone over the bank of the creek, which was several feet high in that place, and lay in the shallow icy water. Meantime he had gotten his hand on the automatic pistol. He now jerked upright and fired at the form of his assailant, which bulked above him. The man disappeared. For a moment Ramon sat still. He heard footsteps, and something like a grunt or a groan. Then he extricated himself from the cold, sodden blankets, climbed upon the bank, and began cautiously searching about, with his weapon ready. He found the club—a heavy length of green spruce-and put his hand accidentally on something wet, which he ascertained by smelling it to be blood.