St. Clair.—The streams are Cahokia, Prairie du Pont, Ogle's, Silver, Richland, and Prairie de Long creeks, and Kaskaskia river. The land is various, much of which is good, first and second rate, and proportionably divided into timber, prairie, and barrens. The minerals are lime and sandstone, and extensive beds of coal, and shale.

Tazewell.—Watered by the Illinois, Mackinau, and their tributaries. Much of the surface is undulating, soil rich; prairie predominates, but considerable timber, with some broken land about the bluffs of Mackinau, and some sand ridges and swamps in the southern part of the county.

Union.—Watered by the Mississippi, Clear creek, the heads of Cash, and some of the small tributaries of the Big Muddy. Much of the surface is rolling and hilly,—all forest land. Soil, second and third rate. Some rich alluvial bottom.

Vermillion.—Is watered by Big and Little Vermillion of the Wabash, with large bodies of excellent timber along the streams, and rich prairies interior. Surface, undulating and dry; soil, deep, rich, and calcareous.

Wabash.—Has Wabash river on the east, Bon Pas on the west, and some small creeks central; surface rolling, and a mixture of timber and prairie; soil, generally second rate. Minerals; lime and sandstone.

Warren.—Besides the Mississippi, its principal stream is Henderson river, which passes through it, with Ellison, Honey, and Camp creeks. Much of the land on these streams is rich, undulating, deficient somewhat in timber, with excellent prairie. Along the Mississippi, and about the mouth of Henderson, the land is inundated in high water.

Washington.—Has the Kaskaskia on its north-western side, with Elkhorn, Little Muddy, Beaucoup, and Little Crooked creeks interior. The prairies are rather level, and in places inclined to be wet; the timber, especially along the Kaskaskia, heavy.

Wayne.—The Little Wabash, with its tributaries, Elm river, and Skillet Fork, are its streams. It is proportionably interspersed with prairie and woodland, generally of second quality.

White.—The eastern side washed by the Big Wabash, along which is a low, inundated bottom; the interior is watered by the Little Wabash and its tributaries. Some prairie, but mostly timber. Soil and surface various. Some rich bottom prairies, with sandy soil.

TOWNS.