We passed in the afternoon to a more plain and fertile country than that we had been for some days traversing. The river valley became wide, and bounded on both sides by low and rounded hills instead of abrupt and perpendicular precipices. The interior of the country is but little elevated above the river, and its surface is nearly unbroken. We crossed the beds of several creeks, apparently of large streams in the wet season, but now entirely destitute of water. As yet we had not a single tributary discharging any water into the river, nor had we been able to discover any augmentation of the volume of water, which appeared to have been derived from tributaries entering on the other side. The channels of all the creeks hitherto observed, were beds of sand without water. Several of these "dry rivers," which we passed in the course of the day, have broad valleys, which, if we may judge from a comparison with that we are descending, must have an extent of more than one hundred miles, draining a wide expanse of country of the surplus water in the rainy season, but remaining dry during great part of the year. At five o'clock we encamped, having travelled twenty-six miles due east. The hunters were immediately sent out, but returned without game, having seen nothing. A beautiful white-flowered gaura,[56] had been for several days observed along the bank of the river. It is undescribed, and has, before flowering, a very distinct resemblance to common flax. {288} CHAPTER V {XII} Kaskaia Hunting Party--Indian Encampment--Unfriendly Behaviour of the Kaskaias--Some Account of their Persons and Manners--Salt Plains--Cumancias. Wednesday 9th. We breakfasted on the last of the horse, which, having been killed on the 5th, and the weather since unusually warm, had suffered from long keeping. We ate it cheerfully, only regretting that we could not promise ourselves as good for dinner. All our party, who are marksmen, were kept constantly out in search of game, but for several days had met with no success in hunting.