At that moment we heard three or four rifle shots which attracted our attention toward the direction which our train had taken. The train was now out of our sight. We both concluded that some of the boys had discovered game. Turning again toward the spot where a minute before had stood the daring hero of Grease Wood Desert, we discovered that he had vanished and no sign or trace of him was visible. The only possible avenue by which he could disappear and still remain in the flesh was by a narrow, crooked ravine near the ill-defined trail. We hastened to its margin, but no sight or sound that came to our senses gave us the slightest clue to the manner of his transformation or disappearance. His abiding place may have been either in Avernus or down the ravine, for, although possibly not dark enough, the latter was certainly hot enough that day for the former in climate. Noah and I had been so much delayed that we hastened on our course walking side by side, overtaking our wagons before they reached the valley of the North Platte near Brown's ranch, where we camped. We were there informed that our teams, which were much fagged, had traveled forty miles during the day. The rifle shots that we heard had been directed at jack rabbits. On our side trip I suffered not so much from fatigue as from an acute headache, which developed toward the close of the day as a result of the intense heat and of the miserable food we had eaten. Fred had brought with him a few simple drugs from a store in which he was interested at home. Among them was tincture of camphor. He administered a dose of the stuff, which immediately caused all the mechanism of my stomach to assert its rights in the most vehement manner. It expelled everything except the camphor, which, being no longer held in solution, solidified into a chunk. At times it rose into my throat for an instant and then gradually settled down again to resume its activities. The stomach being unable to expel the camphor gum then endeavored to expel itself in its entirety, but as the organ was fastened down in some mysterious fashion, it could only turn itself wrong side out and twist itself in the most unsatisfactory manner. The remainder of the drug supply was then placed at my disposal, but I declined longer to permit my stomach to be used as a chemical laboratory in which to test drugs of unknown qualities. Not until the solidified gum had been expelled was there any domestic peace. [Illustration: SCOTT'S BLUFF, SHOWING DOME ROCK IN THE DISTANCE] Near the course that we had followed to this camp is the battle field where in 1855 General William S. Harney slaughtered the Brule Sioux Indians in a terrific fight in which 500 savages are said to have perished at what is known as Ash Hollow. Harney had served in the Black Hawk war and also in our war with Mexico.