p. 889

-750-

-889-

1851.

ore. But no fossils could be found in the ore here as in New York, nor did the yellow limestone yield any.

Oct. 10. From Neosho, we went south into Ashippun to examine the ledge marked on the government plats as "sandstone", but which when burnt, makes lime for a large district of country around; It is on Sec. 7, T. 9, R. 17. The upper portion of the cliff is yellow porous limestone, like that at the Menomonee Falls, &c. and the lower portions or layers are lighter colored and more compact. Some fragments had a reddish color and granulated appearance and this is probably the origin of the mistake of the surveyors in noting it as sandstone. No fossils found.

The cliff is doubtless Niagara limestone, being a portion of the outcropping range extending from Fon du Lac and Iron Ridge, &c.

At Hustisford the limestone is of an older date, being the Galena or lead-bearing rock, as shown by a fossil shell found here. It rests upon the blue limestone in the bed of the stream in which was found narrow veins of calcareous spar and galena. This is therefore the junction of these two rocks.

A sag running in an east and west direction across the ridge southwest of town as supposed to indicate a lead mine in the crevice below; such indications being often relied upon by the prospectors in the lead mine region.

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