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248

Rivers

At the place called the Menomonee Falls, fifteen miles from Milwaukee this river passes [through] between perpendicular banks of limestone; sometimes thirty feet in height. There is a fall here of forty eight feet, in the space of half a mile; and mills have been erected here. There is no perpendicular fall of water. The limestone may be quarried in layers of any desired thickness, and much of it is of an excellent quality for building, and even for ornamental purposes, being hard and of a uniform texture resembling marble. Some layers are filled with small cells or cavities, occasioned probably, by the decay of some mineral substance that once filled them. This variety is probably the best for the manufacture of lime, requiring less fuel than the more compact variety.

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