420 GEOLOGY OF OHIO. 
stated, but there are two examples found in it of stratified ores. The 
lowermost one of these (No. 3 of the section), seems to belong to the 
horizon of the lowest coal. Blackband, as will be remembered, occurs 
at the level of this seam in Northern Ohio, and attains great value 
there, but no clear and well defined example of it has been reported 
south of Mahoning county. On the lands of Scioto Furnace, however, 
a few hundred tons of a stratified ore have been mined from the very 
floor of the Lower Coal Measures. There is no good development of 
the Sharon or lowest coal in the county, but the ore comes from the 
place where it is due. The deposit is not even or regular, and it is 
confined, so far as is now known, to a few localities. Exploration has 
been of a simple and inexpensive kind, and our knowledge is therefore 
mainly derived from a few outerops. No analyses are at hand, but it 
is safe to say that the ore is low in iron. It has been tried in the fur- 
nace, but is no longer mined. | 
The most important fact in connection with this deposit is the 
reappearance of blackband at the Sharon coal level. Though this 
particular deposit has no great value, its presence dislodges the pre- 
sumption against the occurrence of ore at this horizon, which the circuit 
of 200 miles, from which it is absent, has served to establish. 
No other beds of this character are now known, unless the forma- 
tion referred to in the subsequent paragraph as occurring in section 2, 
Richland township, Vinton county, shall be assigned to this place in 
the scale. 
At 80 to 1CO feet above the Conglomerate or the Sub-carboniferous 
limestone, and at 100 to 125 feet below the Lower Mercer limestone, 
in the southern part of the field, and at 75 to 100 feet further north- 
ward, there is a series of small ore deposits. Not less than five distinct 
names have been given to ores that have been opened and worked about 
Scioto Furnace at this general level. The best known of these names 
is perhaps the Lincoln ore, or No. 4 of the section. It matters but 
little whether there are one or five seams of ore in this series, for no 
one of them singly adds much to the supply of the district, nor do all 
combined. 
The horizon is seen to be about that of the Wellston coal. This 
seam is often covered with heavy kidneys of ore, known as the Davis 
ore, near Wellston, and it is probable that these several ores of Scioto 
SS ee 
