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.

117
Beginning at the base of the coal measures, we find ore at a few points
below the Maxville limestone. The best development was seen in Section 16, Madison township, Perry county, on the land of Edward Danison. Here upon the top of the Logan sandstone group were seen nodules
of siderite ore in clay, measuring from 4 to 8 inches thick, and overlaid
by sandy shales. S. Baird, Esq., formerly in charge of the furnace at
Logan, reports a layer of ore over a seam of fire-clay resting on the Logan sandstone. This is not far from Logan, and is in the same geological
horizon with the last mentioned.
On the top of the Maxville limestone iron ore was seen at several
points. On the farm of Mr. Danison, previously alluded to, this ore
was found from 4 to 8 inches thick. A sample of this ore was analyzed
by Prof. Wormley, and the result given in No. 5 of the appended table
of analyses. This ore is interesting, as containing 4.30 per cent. of manganese. No alumina was found, which is remarkable for a coal-measure
ore, and one overlaid by a shale containing much clay. Of sulphur and
phosphorus it contains only a trace. The percentage of metallic iron,
38.87, added to the unusual purity, would make this a desirable ore for
making iron, if it can be obtained in sufficient quantity.
On Section 14, Newton township, Muskingum county, on the farm of
Joseph Rambo, nodules of similar ore were found resting upon the great
Maxville or Newtonville limestone. No analysis was made of this, but
probably it is an excellent ore.
In Section 28, Green township, Hocking county, on James Tannahill's
land, is a very thin layer of nodules of iron ore, containing quartz pebbles,
resting upon the Maxville limestone. This ore is here the only representative of the true coal-measure conglomerate. The place of the conglomerate is above the Maxville limestone. Dr. Briggs, in the old reports,
observes the conglomeratic character of this ore.
On Edward Danison's land, already referred to, there is a thin layer of
siderite ore 13- feet above the limestone ore, and still another layer
3 inches thick, 15 feet higher.
In a section made by Dr. Hildreth, given in the old Geological Reports,
and copied as Sec. 35 in my map of grouped sections, on Joseph Baird's
land, Sec. 11, Hopewell township, Licking county, a layer of ore 1 foot 4
inches thick, rests upon the Maxville limestone. This is thicker than I
found it at any point. Ten feet higher up, Dr. H. reports a seam 8 inches
thick. Col. J. W. Foster, in the old geological reports, gives a section
(copied as No. 41 in my map of grouped sections) in which are two layers
of shale containing nodules of iron ore. These are repectively 15 feet 4
inches and 17 feet 4 inches above the limestone in the bed of the MIskingum, at Zanesville.
At nearly the same geological horizon on the land of Joseph Rambo,
Sec. 14, Newton township, Muskingum county, are two small layers of