Along each bank, for the whole fifteen miles, extended a stripe, one hundred yards in breadth, of a deep rusty brown, indicating an inexhaustible bed of iron, through the center of which the Missouri had worn its way.

Indications of the continuance of this bed were afterwards observed higher up the river.

It is, in fact, one of the mineral magazines which nature has provided in the heart of this vast realm of fertility, and which, in connection with the immense beds of coal on the same river, seem garnered up as the elements of the future wealth and power of the mighty West.
The sight of these mineral treasures greatly excited the curiosity of Mr.Bradbury, and it was tantalizing to him to be checked in his scientific researches, and obliged to forego his usual rambles on shore; but they were now entering the fated country of the Sioux Tetons, in which it was dangerous to wander about unguarded.
This country extends for some days' journey along the river, and consists of vast prairies, here and there diversified by swelling hills, and cut up by ravines, the channels of turbid streams in the rainy seasons, but almost destitute of water during the heats of summer.

Here and there on the sides of the hills, or along the alluvial borders and bottoms of the ravines, are groves and skirts of forest: but for the most part the country presented to the eye a boundless waste, covered with herbage, but without trees.
The soil of this immense region is strongly impregnated with sulphur, copperas, alum, and glauber salts; its various earths impart a deep tinge to the streams which drain it, and these, with the crumbling of the banks along the Missouri, give to the waters of that river much of the coloring matter with which they are clouded.
Over this vast tract the roving bands of the Sioux Tetons hold their vagrant sway, subsisting by the chase of the buffalo, the elk, the deer, and the antelope, and waging ruthless warfare with other wandering tribes.
As the boats made their way up the stream bordered by this land of danger, many of the Canadian voyageurs, whose fears had been awakened, would regard with a distrustful eye the boundless waste extending on each side.

All, however, was silent, and apparently untenanted by a human being.