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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siderite ore, separated by 1 foot 7 inches of light blue clay-shale, the
lower 2 inches and the upper 3 to 4 inches thick.
Near John Fluhart's mill, Green township, Hocking county, there were
found nodules and thin layers of iron ore, in shales, the upper part black,
and the middle white clay, and the lower bluish. There were nodules of
ore in all these shales, but probably none were thick enough to work.
Some of the ore was flinty.
At Maxville, Perry county, a layer of siderite ore, 3 inches thick, was
seen about 20 feet above the top of the Maxville limestone.
These lower ores are found sweeping through the northern half of
Perry county, but there was great difficulty in finding such exposures of
the rocks as would enable us to determine their exact stratigraphical
position. Near Wolfe Station, on the Zanesville and Cincinnati Railroad, one of these layers of ore is somewhat largely mined and sent to a
furnace at Zanesville. Mr. Baird, who first used this ore, thinks it is
elsewhere represented by the ore resting upon the Maxville limestone.
North of this, in the Somerset region, excellent ores are found. Should a
railroad be built through that part of the county these ores could be
profitably mined and sent to furnaces.
Between 40 and 50 feet above the level of the Maxville limestone is a
very well-marked horizon of ore. The ore is seen directly behind the old
Hocking furnace at Haydenville, Green township, Hocking county, where
the quality is good, but it adheres firmly to the sandstone below it.
Where it could be removed from the stone it has been used in the furnace. Below the sandstone, which is 12 inches thick, is a stratum of
earthy limestone 1 foot 6 inches thick. Both limestone and sandstone
are highly fossiliferous.
On the bank of Monday creek, opposite Henry Hazelton's, Salt Lick
township, Perry county, this ore is well seen. Here there are three or
four layers. The upper is in nodular masses imbedded in blue shale.
The next below is ore of a good quality, and lies in one and sometimes
two layers. The lowest is rather a ferriferous flint. In all, there may be
15 inches of ore. Three samples were analyzed by Prof. Wormley, and
the results are given in table of analyses of ores. No. 1 was from the
top, or nodular layer; No. 2 the next below, and No. 3 the flinty ore.
No. 1 is a rich ore, yielding 41.37 per cent. of metallic iron. It is chiefly
a carbonate of iron (siderite), but a portion has been changed under atmospheric agencies to limonite or the hydrated sesquioxide. It contains
0.48 per cent. of sulphuric acid and 0.18 of phosphoric acid. No. 2 is
also rich in iron, containing 37.59 per cent. The sulphuric acid is 0.75
per cent, but there was no trace of phosphorus. No. 3 is poor, containing only 17.99 per cent. of metallic iron. To what extent these ores
could be obtained by " stripping," it is impossible to state without a
special investigation. Mining by drifting would be very expensive.