Part I. Report of progress in 1869, by J. S. Newberry, chief geologist. Part II. Report of progress in the second district, by E. B. Andrews, assist. geologist. Part III. Report on geology of Montgomery County, by Edward Orton, assist. geologist.

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rotomaria, Spirifer, and a small cyathophylloid coral, etc., have been
obtained.
The limestone here, as in Green township, Hocking county, appears to
be of limited extent. In going south toward Logan, it is last seen in the
road on Augustus Culver's land, some two miles from Maxville. Mr.
Robert Ashbaugh reports that, so far as he knows, it occurs not further
than a fourth of a mile west, one mile north, and not at all east of Maxville. As seen on Mr. Hardy's land, the lower five and a half feet are a
bluish-gray stone, very hard and pure, breaking with a sharp conchoidal
fracture, and bedded in layers of eighteen inches and under. The upper
three feet and two inches contain a little iron, which causes the rock to
weather buff color. In many places the buff layers are beautifully mottled with large spots of different shades of blue and green. The lower
portions are preferred for the lime-kiln, and the lime is said to be of superior quality. The stone has also been quarried, and used in the Logan
Furnace as a flux, for which it serves an admirable purpose. Formerly
this limestone was quite extensively burned into quicklime at Maxville,
but the expense of transportation by wagon renders it difficult to compete with the product of other establishments more favorably located.
At other exposures in the vicinity of Maxville, a black shale takes the
place of the sandstone over the limestone, and also on the limestone
there is often found a deposit of iron ore.
Following the horizon of the Maxville limestone north through Perry
county, we find the stone finely exhibited in section 16, Madison township,
Perry county, on the land of Edward Danison. Here the waters of Jonathan creek have excavated a deep channel, and the limestone, with perhaps fifty feet of the Logan sandstone, is exposed to view. The upper
layers of the Logan sandstone are of soft, sandy shales, but contain the
usual fossils of the Logan or upper Waverly group. The following section shows the position of the limestone and the associated strata. The
limestone is from this point often seen in the valley, and is well exposed
at Newtonville, Newton township, Muskingum county, where it lies in
the bed of the stream. ~ At Newtonville and in the vicinity a fine collection of fossils was made from the limestones, all indicating the sub-carbonifelous character of the rocks. Above Newtonville, on the stream on
the land of J. H. Roberts, the lower part of the limestone is buffcolored.
Prof. Wormley gives, of this, the following analysis:
Silica............................................. 15.20
Iron and alumina, chiefly iron...... 4.40
Carbonate of lime.....,.......................... 49.80
Carbonate of Magnesia..........................................30.65
Total................ 100.05
This may prove a valuable material for a cement lime.