In moving camp the plains tribes usually took their whole tent with them, the poles, before they had the horse, being tied on each side of their dogs by means of a sort of saddle made for the purpose. Moving was far easier after the horse arrived, for not only could he pull the poles of the tent tied to his back, but also upon them he could drag the children, the tent cover, and the general household goods; furthermore, the mother could ride on the horse. The _travois_ was, therefore, a different affair with the horse to drag it than it was with the dog; but they did not abandon utilising the dogs and they were often harnessed to light loads on the poles. The horse, then, was not only an essential in war and the chase, but also in the journeys from one locality to another. They knew well their own land and its limits. We sometimes forget this. Francis La Flesche, an educated Dakota, writes with reference to their knowledge: "The white people speak of the country at this period as a wilderness as though it was an empty tract without human interest or history. To us Indians it was as clearly defined then as it is to-day; we knew the boundaries of tribal lands, those of our friends and those of our foes, we were familiar with every stream, the contour of every hill, and each peculiar feature of the landscape had its tradition. It was our home, the scene of our history and we loved it as our country."[27] Tabbaquena, a head chief of the Comanches whom Gregg interviewed, drew for him a map, with paper and pencil, and "although the draft was somewhat rough it bore much to our astonishment, quite a map-like appearance, with a far more accurate delineation of all the principal rivers of the plains, the road from Missouri to Santa Fé and the different Mexican settlements than is to be found in many of the engraved maps of those regions." Pike and other early explorers might have saved themselves vast trouble had they employed such a man to accompany them. This was not always easy, however, for sometimes when the native was perfectly willing to draw a map, or otherwise describe a route, nothing could induce him to leave his people, and even if he did go, he would frequently tire of his job and slip away. [Illustration: Granary—Cliffs of Green River. Thirty Feet above Ground. Photograph by L. H. Johnson.]