We saw many wooden buildings at the different stage stations, which had subterranean communications with little sod watch-towers, rising a couple of feet above the ground, at a distance of forty or fifty yards from the main building. Loop-holes through their walls afforded opportunities for firing, and if the wooden stations were burned, the occupants could find a secure retreat. We heard of but one occasion in which the tower was ever used, but then it was most effectively, the savages, gathered close around the main building, being surprised and put to sudden flight, by the murderous fire which seemed to spring out of the ground at their rear. CHAPTER XXVII. OUR PROGRAMME CONCLUDED--FROM SHERIDAN TO THE SOLOMON--FIERCE WINDS--A TERRIFIC STORM--SHAMUS' BLOODY APPARITION AND INDIAN WITCH--A RECONNOISSANCE--AN INDIAN BURIAL GROVE--A CONTRACTOR'S DARING AND ITS PENALTY--MORE VAGABONDIZING--JOSE AT THE LONG BOW--THE "WILD HUNTRESS'" COUNTERPART--SHAMUS TREATS US TO "CHILE"--THE RESULT. "Gentlemen," said the Professor, next morning, at breakfast, "We have well-nigh exhausted Buffalo Land. North of us some twenty miles, the upper waters of the Solomon may be reached. I believe that district to be rich in fossils; it is also interesting as the path over which the red men have so often swept on their missions of murder. The valley winds eastward and southward during its course, and will discharge us at Solomon City, a point well back on our homeward journey. There our expedition may fitly disband. Should it be considered desirable, during the coming year, to explore the wild territories of the north-west, we can meet at such place as may be designated. What say you?" Our response was a unanimous vote in favor of accepting the programme thus sketched out. Some of us desired the trip, and all knew that the Professor would go at any rate. Our path lay over the same undulating plain that we had been traversing for many weeks, the wind blowing fiercely in our teeth. The violent movement of the air over this vast surface is often unpleasant, and during a severe winter is more dangerous than the intense cold of the far north, as it penetrates through the thickest clothing. The winter of 1871-2, when numbers of hunters and herders were frozen to death, illustrated this to a painful degree. The months of December and January are usually mild, and no precautions were taken. On the morning of the most fatal day, it was raining; in the afternoon, the wind veered and blew cold from the north, the rain changing to sleet, and this, in turn, to snow so blinding that objects became invisible at the distance of a few feet.