Mr. Say's detachment, consisting of twelve men and a boy, furnished with three pack-horses for the {108} transportation of baggage, departed from Fort Osage on the evening of August 6th. Their route lay westward across the woodless plains about the sources of the Hay Cabin, Blue Water, and Warreruza Creek. The cliffs along the Blue Water are naked perpendicular rocks. In the vallies numerous Indian encampments occurred, which appeared not long since to have been occupied. These were most frequently seen at the points, where the streams making almost a complete circuit, and nearly enclosing a small tract of ground, afforded an important protection against the approach of an enemy. The prairies about the head waters of the Warreruza abound in game. Here ravens were first seen by the party, and numbers of large banded rattlesnakes were killed. The blowing flies swarmed in inconceivable numbers, attacking not only the provision of the party, but depositing their eggs upon the blankets, clothing, and even on the furniture of the horses. On the 11th of August they arrived at some elevated ridges, from which they overlooked an extensive country, and could trace the whole course of the Wahrengeho, or Full Creek, diverging slightly from the Konzas, and could readily perceive timber upon several of its head branches. The lands between the head waters of Full Creek and the Konzas are not so good as those about the sources of the Warreruza, and produce less timber. The settlement of this region will be much retarded on account of the want of trees, these being confined to the margins of the watercourses, while tracts of valuable soil, of many miles in extent, have not a single tree or bush upon them. The soil is, however, well adapted to the culture of some of our most valuable forest trees. The sugar-maple, and several of the most important species of carya, the oaks, the tulip-tree, and the linden, would unquestionably succeed.[153]