elevated bottom succeeds the first, beyond which, occur thinly timbered hills. We then enter upon the great western prairies, or grassy plains, separated from each other by small rivulets, exhibiting belts of trees along their margin. About eight miles from the Arkansa, commences the great Osage prairie, more than 60 miles in length, and, in fact, succeeded by a continuation of woodless plains to the banks of the Missouri. Mr. Prior informed me, that in the first hills below, not far from the Arkansa, on the east side, and about six miles distant, there is calcareous rock. On entering the prairie, I was greatly disappointed to find no change in the vegetation, and indeed, rather a diminution of species. The Amorpha canescens, which I had not heretofore {172} seen, since leaving St. Louis and the Missouri, and a new species of Helianthus, however, instantly struck me as novel.
Leaving the path to the Osage village, we visited the rapids of the Verdigris, which are situated five miles above its embouchure. This obstruction is occasioned by a ledge of rocks, which traverse the river, now bare, except about three or four yards, over which the water foamed in a small cascade. The stream was quite pellucid, and along the ledge we saw great numbers of buffaloe-fish, as well as gars (Esox osseus), accompanied by several other smaller kinds. While viewing the surrounding objects, my attention was attracted to a beautiful green-striped lizard, resembling, except in the colour and larger size, the Lacerta vittata.
If the confluence of the Verdigris, Arkansa, and Grand rivers, shall ever become of importance as a settlement, which the great and irresistible tide of western emigration promises, a town will probably be founded here, at the junction of these streams; and this obstruction in the navi-
