A new and popular Pictorial History of the United States . en years. The following general geological stra-ta are found in the whole of the easternupper Mississippi country, as truly as inIowa: 1st, vegetable mould, eight tothirty inches ; 2d, pure yellow clay, threeto eight feet; 3d, gravelly clay with peb-bles, four to ten feet; 4th, limestone, twoto twelve feet; 5th, shale; 6th, bitumi-nous coal; 7th, soapstone ; 8th, sand-stone. The limesKnie exists every-where. Eveiy well and other excava-tion, which penetrates deep enough,discloses it, and it is exposed by manystreams. The western part o
A new and popular Pictorial History of the United States . en years. The following general geological stra-ta are found in the whole of the easternupper Mississippi country, as truly as inIowa: 1st, vegetable mould, eight tothirty inches ; 2d, pure yellow clay, threeto eight feet; 3d, gravelly clay with peb-bles, four to ten feet; 4th, limestone, twoto twelve feet; 5th, shale; 6th, bitumi-nous coal; 7th, soapstone ; 8th, sand-stone. The limesKnie exists every-where. Eveiy well and other excava-tion, which penetrates deep enough,discloses it, and it is exposed by manystreams. The western part of Iowa is chieflymountain limestone, with strata of fossilchalk formations, wholly or chiefly ofshells. Such is the summit of the bluffat Burlington, and of this is formed thefine whitish marble of Iowa City. Inthe south, between the Des Moines andIowa rivers, are several varieties of mar-ble, some of them black, variegated, & and cornelians are washed out onthe banks of the Mississippi in abundance. DESCRIPTION OF THE STATE OF WISCONSIN. 587. Wisconsin is bounded north bythe British possessions, east by thewest end of Lake Superior, thestate of Michigan, and lake of thesame name, south by Illinois, andwest by Iowa. It lies between 42°north latitude, and86^ 50 and 96^ west longitude. Thelength is six hundred miles, and thebreadth one hundred and fifty, con-taining about ninety thousand squaremiles. The population, in 1840, was30,945, and in 1845,150,000. Thoseparts which lie south of Green Bay,Fox river, and the Wisconsin, present a variety of prairie and timber land, withsome swamps and wet prairies, and a rich soil, varying from one foot to ten feet indepth. The north part is mountainous, declining into hills and a swelling surface,which terminates at Wisconsin river. The streams in that part of the state areoften wild, and much broken by falls and rapids. That part of the state in which*some of the head streams of the Mississippi have their origin, is an elevated ta
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