The expansions of the Missouri bottom above Franklin have, since their settlement, received distinctive names. We pass on the south the Chenai au Barre, Tabeau, Tite-saw, and Miami bottoms; on the north, those of Charaton, Sugar-tree, and Grand river. These are wild and fertile plains, usually covered with heavy forests of cotton-wood, sycamore, ash, and sugar-maple, and partly encircled by the bluffs, rising abruptly, about to the elevation of the highest trees, thence sloping gradually to the prairies, the region of the Gramina, and the Cyperacæa. Eighteen miles above Charaton, is the entrance of Grand river an important tributary to the Missouri from the north. This river is one hundred and fifty yards wide at its mouth, and is navigable for boats of small burthen, about two hundred miles. Its waters are transparent, except in times of high floods, and its current less rapid than that of the Missouri. There are no settlements on its banks, except at the mouth, where is a trading house, and the residence of a single family. The lands are, however, of a good quality, and the adequate supply of timber, and numerous springs of water, will ensure their speedy settlement. The Sauks, Foxes, and Ioways, hunt in the plains towards the sources of Grand river, where elk and deer are still numerous, and the latter dispose of their pelfries to the traders on the Missouri.[124] The navigation of the Missouri, for a few miles above and below the mouth of Grand river, is supposed to be more difficult than at almost any other place, owing to the rapidity of the current, and the numerous sand-bars and snags. Two miles above the confluence is the channel called Grand river {92} Cut-Off, so thickly set with snags as to be almost impassable. The distance by the Cut-Off to the head of the island is three-fourths of a mile; by the course of the river to the same point it is six miles.[125] We followed the old channel, which is much obstructed by trunks of trees and sand-bars, and after a few hours succeeded in ascending this dangerous pass. Compact limestone, and argillaceous sandstone, occur frequently along the Missouri, above the mouth of Grand river, and indications of coal are often met with. In a country affording but an insufficient supply of timber for the consumption of a dense population, these extensive beds of fossil coal will be considered of great value, and the necessities of the inhabitants will lead to their early exploration. Whenever the dominion of man is sufficiently established in these vast plains to prevent the annual ravages of fires, trees will spring up; but we may expect that before forests originating in this manner can arrive at maturity, the population along the banks of the Missouri will become so dense, as to require the greater part of the soil for the purposes of culture.