Halleck, who was here in control of all the operations of the Federals, had meanwhile ordered Grant's force to ascend the Tennessee river and operate against Corinth; Buell's well-disciplined forces were to march overland from Nashville to join him, and General O.
Westward from the Lower Tennessee river the surface of the East Gulf Coastal Plain rises rapidly to the summit of a broken cuesta or ridge and then descends gently and terminates abruptly in a bluff overlooking the Mississippi Flood Plain.
The soils of the Highland Rim Plateau as well as of the lowland west of the Tennessee river vary greatly, but the most common are a clay, containing more or less carbonate of lime, and a sandy loam.
Afterwards he was in charge of the construction of the Muscle Shoals Canal on the Tennessee river and of another canal near Chattanooga, Tenn.
The remainder of the state which lies east of the Tennessee river is divided into the Highland Rim Plateau and a lowland basin, eroded in the Highland Rim Plateau and known as the Blue Grass Region; this region is separated from the Highland Rim Plateau by a semicircular escarpment extending from Portsmouth, Ohio, at the mouth of the Scioto river, to the mouth of the Salt river below Louisville; it is bounded north by the Ohio river.