72 GEOLOGY OF OILIO. 
from the Kittanning coal to the Upper Freeport limestone is precisely 
the same as was found between coal and blackband in the section 
already given. é 
On the Robertsville road to Minerva, the Lower Freeport limestone 
occurs in good development at several points. One is just above the 
Robertsville Station, and a second is on the Slagle Hill, near Minerva. 
The limestone is from 80 to 100 feet above the Middle Kittanning coal. 
The southward dip carries the Osnaburg coal down to 450 feet 
above L. E. at Oneida where the railroad reaches the Sandy Valley. 
The seam, us has already been stated, is opened on nearly every farm 
through the valley. At Malvern it is quite extensively worked by 
T. M. Creighton, in the southwest quarter of section 18, Brown town- 
ship. The Lower Freeport coal, 2 feet thick, has been opened at just 
100 feet above the Middle Kittanning coal on this farm, and near by, 
on the J. Weis tract, southwest quarter of section 7, an old mine of the 
Upper Freeport coal is found. The limestone appears in the adjacent 
ridges in strong force. On the Foltz Hill, it is not less than 8 feet 
thick, and is thoroughly characteristic in all respects. The Weis coal 
was but 24 or %5 inches thick. It carried no blackband with it, but it 
was covered by a considerable body of black shale. 
At David Stull’s farm, in Sandy township, Stark county, near the © 
western line of Brown, a measurement was again obtained between the 
Middle Kittanning coal and the Upper Freeport coal. The interval is 
here 132 feet. The upper coal was found 3 to 4 feet in thickness, and 
the black shale over it carried iron enough to lead to its being mined 
on the large scale, many thousand tons being calcined, but it proved too 
lean an ore to be used with profit. 
The Magnolia section already shown on page 92, when extended 
so as embrace all of the elements that fairly belong to it, proves to be 
the most comprehensive and the clearest section of the Sandy Valley. 
It was extended only to the Middle Kittanning coal (No. 6 of the Tus- 
carawas Valley), but by following this well-known seam % mile to the 
southeast from Magnolia Station, it becomes possible to add 150 feet 
of overlying strata to the section. 
On the V. Rhinehart farm (n.w. 4 sect. 24, Rose tp.) the coal 
seam which made the top of our previous section is mined, and on the 
summit of the hill, which rises above the coal bank, the Upper Free- 
port horizon is reached. It holds, or rather held, 2 feet of coal, over- 
