holiday attire,--but it must be confessed that the view is a melancholy change from our recent affluence of beauty. With the other succulent plants, the rich herbage of the prairie has entirely disappeared. There is not a blade of anything which an Eastern grazier would recognize as grass between this boundary and the Rocky Mountains. As we whiz over these wastes at railroad-speed, we shall be apt to pronounce them absolutely sterile. When we stop at the next coaling-station, let us examine the matter more closely. The ground proves to be covered with minute gray spirals of herbage, like a crop of vegetable corkscrews, an inch or two in height, and to all appearance dry as wool. This is the "_grama_" or "buffalo-grass," and, despite its look of utter desiccation, is highly nutritious. It is almost the entire winter dependence of the buffalo-herds, and domestic cattle soon learn to prefer it to all other feed. Its existence, together with the wide group of changes which we have noticed, denotes that we have passed the threshold of the fourth grand continental division, and are now in the region of the Plains proper. Ex-Governor Gilpin of Colorado, in his "Central Gold Region," very truly styles the Plains "the pastoral area of the continent." The Plains are set apart for grazing purposes by the method of exclusion. There is nothing else that can be done with them. Rain seldom falls on them. The shallow rivers, like the Platte, which wander through them, are too far apart to be used economically for their general irrigation. Only such herbage may be expected to thrive here as can live on its own condensation of water from a sensibly dry atmosphere. Manifestly, art can do nothing for the improvement of such a tract. It must be left to fulfil its natural function, as the great continental pasture. Along the banks of the rivers run narrow strips of alluvial soil, liable to yearly inundation; and these may be made amenable to the ordinary processes of agriculture. On these the herdsman may raise the grain and vegetables necessary for his own consumption. But the vast area of the region seems inevitably set apart for the one sole business of cattle-raising, and all the way-freight trains which pass us here are laden with beeves for the St. Louis market, or dairy-produce for all the markets of the world. We have never tasted _grama_-cheese, but have a theory that its individual piquancy must equal that of the delicious _Schabzieger_.