COAL MINES OF SCIOTO COUNTY. 1037 
three lowest seams in particular have little or no value here. The 
Upper Mercer, the Tionesta, the Brookville and Clarion coals support 
at the best but feeble mines. The Kittanning and Freeport coals, 4 in 
number, furnish almost the entire coal supply jof these counties, and 
seem likely to hold the same place for time to come. 
The general section is as follows: 
Cambridge limestone, generally in two beds. 
Interval, containing Brush Creek coal, 130 feet. 
Upper Freeport coal, Waterloo seam, Coal No. 7. 
Interval, 40-50 feet. 
Lower Freeport coal, Hatcher seam, Coal No. 6a. 
Interval, 40-50 feet. 
Middle Kittanning coal, Sheridan seam coal, No. 6. 
Interval, 40 feet. 
Lower Kittanning coal, Newcastle seam, coal No. 5. 
Interval, 20-30 feet. 
Ferriferous limestone. 
Interval, 0-15 feet. 
Clarion coal, in northern townships only, Coal No. 4a? 
Interval, 50 feet. 
( Brookville coal, Coal No. 4. 
Interval, 40 feet. 
1O0=140/ tr. 4 Tionesta coal, Coal No. 3b. 
L Interval, 10-20 feet. 
Franklin or Big Red block ore. 
Interval, 15-40 feet. 
40-60 feet. Upper Mercer coal, Webster cannel, Coal No. 3a. 
Interval, 20-30 feet. 
Little Red block ore. 
The places of the three lower seams are also indicated, counting 
from the last-named ore : 
Taterval, 0-15 feet. 
Lower Mercer coal, No 3. 
Interval, 90-120 feet. 
Quakertown coal, Wellston seam, No. 2. 
Interval, 50-100 feet. 
Sharon coal, Jackson Shaft seam, No. 1. 
A good representation of the elements likely to be found in any 
one section is shown in the accompanying figure. The section was 
carefully measured, and may be counted a type for the region to which 
it appears: 
