Nearly all graminivorous animals inhabiting the Plains, except the elk and some species of the deer, prefer the buffalo grass to that of the lowland; and it is probable that even these exceptions would not prove good if it were not for the timber on the bottom land, which affords good cover to both the elk and the deer. Both are often found in large herds grazing upon the uplands, although the grass is far more luxuriant and plentiful on the lowlands. Our domestic animals invariably choose the buffalo grass, and experience demonstrates beyond question that it is the most nutritious of all varieties of wild grass. The favorite range of the buffalo is contained in a belt of country running north and south, about two hundred miles wide, and extending from the Platte river on the north to the valley of the Upper Canadian on the south. In migrating, if not grazing or alarmed, the buffalo invariably moves in single file, the column generally being headed by a patriarch of the herd, who is not only familiar with the topography of the country, but whose prowess “in the field” entitles him to become the leader of his herd. He maintains this leadership only so long as his strength and courage enable him to remain the successful champion in the innumerable contests which he is called upon to maintain. The buffalo trails are always objects of interest and inquiry to the sight-seer on the Plains. These trails made by the herds in their migrating movements are so regular in their construction and course as to well excite curiosity. They vary but little from eight to ten inches in width, and are usually from two to four inches in depth; their course is almost as unvarying as that of the needle, running north and south. Of the thousands of buffalo trails which I have seen, I recollect none of which the general direction was not north and south. This may seem somewhat surprising at first thought, but it admits of a simple and satisfactory explanation.