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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production has been rapidly increasing since the completion of the Columbus and Hocking Valley Railroad to that point.
The extensive mines of Peter Hayden, Esq., are near Haydenville,
Hocking county.
Considerable coal is mined at various points on the Marietta and Cincinnati Railroad, in Athens and Vinton counties. At Chauncey and
Salina, coal for the salt works is obtained by shaft from the Nelsonville
seam. At Jackson and vicinity, on the Portsmouth branch of the M. &
C. R. R., coal is largely mined for the blast furnaces. It is also shipped
to a considerable extent, especially from the mines of the Petrea Coal
Company. The coal used on the locomotives of the MI. & C. R. R. is
largely from Petrea mines. Coal is also mined largely at Carbondale,
Athens county.
Coal is mined for shipment, at the Miami Company's mines, on the line
of the Zanesville and Cincinnati Railroad, in Muskingum county, and in
that vicinity.
At Zanesville, and at various points on the Muskingum river, coal is
extensively mined, but chiefly for consumption in the local manufacturing
establishments and for domestic uses. Little is shipped away from the
immediate valley.
A considerable quantity of coal is mined near Pine Grove Furnace,
and brought by a railway to Hanging Rock, Lawrence county, and shipped by'the Ohio river. Extensive mining is done at the Sheridan mines,
six miles above Ironton.
On Duck creek and Little Muskingum river, a limited quantity of coal
is mined for local use, chiefly for the generation of steam at the oil wells.
Coal is pretty largely mined and shipped in Guernsey county, near Cambridge, on the Central Ohio Railroad.
Of the coal mined in Monroe and Belmont counties, I have obtained
little definite information. Belmont county has considerable coal.
FIRE CLAYS AND OTHER CLAYS IN THE SECOND GEOLOGICAL DISTRICT.
Fire clays are often found interstratified with our coal measure rocks,
and although there has as yet been no time for their special investigation, yet it is believed that the district will -prove rich in this important
source of wealth. A seam of fire-clay of great purity and excellence is
found at the base of the coal measures, in the vicinity of Sciotoville,
Scioto county, and two extensive fire-brick and tile establishments are in
successful operation at that place. The brick has proved to be of first
quality, and is rapidly superseding the Mount Savage ana other foreign
brick. They are already largely used in our furnaces and rolling-mills.
In Muskingum and Perry counties there are extensive potteries, using
the clay found, in geological position, below the New Lexington or Nelsonville coal. Hon. A. A. Guthrie, Collector of Revenue of the 13th District,