_Of the country situated between the Ohio, Mississippi, and the Lakes_ The section of country next in the order proposed is situated north of the Ohio river, and comprehends the states of Ohio, Indiana, and Illinois. This section may be subdivided into three orders or varieties of country, which merit a separate consideration, viz. the hilly, the plain or rolling, and the valley country. {201} The hilly country, like that south of the Ohio, exhibits a very uneven surface, variegated with hills and dales irregularly distributed, and occupying about one third part of the section under consideration. This portion of the country is of an oblong shape, bounded on the south-east by the Ohio river, and on the north-west by an imaginary line, commencing on the Mississippi near the grand tower, and running in a direction nearly E.N.E., till it approaches the easterly part of Lake Erie. On the east it mingles with the hilly country, comprehending the back parts of Pennsylvania and New York. In short, the whole region situated between the Alleghany mountains and the imaginary line above specified, or in other words, the country through which the Ohio and its tributaries, except the Wabash, have their courses, may be arranged under this head. The hills throughout the whole are very similar in respect to their altitudes, multiplicity and conformation. Although the hilly country north of the Ohio is in many places rugged and broken, yet a large proportion of it is susceptible of cultivation. No high mountains are to be seen; the hills usually rise from six to eight hundred feet above the common level, or about one thousand feet above the water-tables of the principal rivers, and invariably present rounded summits. Interspersed among the hills are numerous fine tracts of arable land, which may in general be alleged of the valleys of the numerous rivers and creeks by which the country is watered. The soil upon the hills is generally productive, except where the surface is rocky and the declivities abrupt, which is more particularly the case in the vicinity of rivers, where the high lands are divided into numerous knobs, being cut by deep ravines with abrupt and precipitous banks. The hilly country, having been generally esteemed more healthy than either of the other varieties above mentioned, has acquired a more numerous population {202} than the latter. As yet, however, no part of this section has its full complement of inhabitants, if we except, as before, the numerous towns and villages and their immediate neighbourhoods. In regard to the products of agriculture, the same remarks that have been made concerning the section south of the Ohio are equally applicable to the country under consideration, with the exception that cotton is cultivated only in the south-westerly extreme of this section, and tobacco is raised for domestic uses only.