Primitive man in Ohio / by Warren K. Moorehead.

  • Warren K. Moorehead
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: Primitive man in Ohio / by Warren K. Moorehead. Source: Wellcome Collection.

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    IIow much farther it may have extended eastward cannot now be ascertained ; but the present termina- tion is certainly much within its original boundary, for the rock which juts out from the hillside at its very extremity is thicker than the flint at any other point, there being a vertical exposure of fully seven feet. How far downward it may reach is not known. In a number of places in the west and middle por- tions of the ridge, wells have been dug and other excavations made; but nowhere has the stone been found more than four feet in thickness. The entire length of the deposit, measured on a section line, is eight miles, and its greatest breadth is three miles. Its actual area as it now exists is probably not more than four square miles, the re- mainder having been removed by denudation. It is not improbable that, as deposited, it comprised fully thirty square miles, with an average thickness of four or five feet. Baryte is found in small quantities in some places; quartz crystals are abundant; while nearly all the flint, except the clear chalcedony, is highly fossilif- erous. As to the evidence of human occupation and industry, the first remains of this nature are ou the western end of the level tract mentioned as extend- ing to the depression in which the coal mine is situ- ated. A space of about ten acres is here surrounded by an ancient wall built of flint blocks that have been gathered up along the outcrop on the hillsides. The enclosure has almost disappeared, the stones
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