STRATIGRAPHICAL ORDER. 127 
and Jefferson counties, that might be added to the number, but as they 
are nowhere known to be workable, they are omitted. 
The names of these coals in the Pennsylvania system are as follows, 
some of their Ohio synonyms being placed in parallel columns: 
CoaL SEAMS OF THE LOWER CoAL MEASURES OF OHIO. 
mea tinh. Fs Big Vein of Salineville, 
12. Upper Freeport coal....... Coal No. 6 and Coal No. 7 ae Net Ou ee une rile, 
bridge, Alexander, 
Bayley’s Run, Norris, 
Happy Hollow, Wat- 
erloo. 
11. Lower Freeport coal. . 2 : 
i j 2 ; * Odie tees: oger, Steubenville 
(Upper Kittanning coal). | Coal No. 5 and Coal No. 6a SP Hae lear Wine 
ace, Hatcher. 
10. Middle Kittanning coal 
(No. 5a coal).........00.. Coal No. 6 and Coal No. 4.......... Strip Vein of Ham- 
mondsville, Osnaburg, 
Pike Run, Dennison, 
Coshocton, Zanesville, 
Straitsville, Nelson- 
ville, Carbondale, 
Sheridan. 
9. Lower Kittanning coal....| Coal No.5, Coal No.4, and Coal.. Leetonia, Mineral P’nt, 
No. 3. New Castle, Lower 
New Lexington, Creek 
Vein, Hammondsviille. 
8. Upper Clarion coal.........; Scrub Grass, Coal No. 4b........ oxod] GrNAGLENaal, Ghose 
Coal No. 4, and Coal No. 3. Vein, New Lisbon, 
Limestone coal of Vin- 
Ue Lower Clarion COAL... .c0000 Coal No. Aa. 0020000000086 2000898908 888000008 ton county, ete, 
6. Brookville coal... Sere eaisecess Coal No. 4, @eceeeoeaseeeeoooooeoeaseeeoos Ooeeee Gray limestone coal of 
Stark Co., Evansdale, 
Greentown, ete. 
5. Tionesta coal 00000000000 200000 Coal No. 3b. 00+ 00000008 000100088 0200000000 Bolivar, McArthur, 
(Newland’s), Vinton 
Furnace (?) 
4, Upper Mercer COAL. ....c006 Coal No. 3a. 2900000008 00090 ODOH0R POOH OO9EE Bryce Coal of Canfield, 
Bedford cannel, Co- 
shocton county. 
3. Lower Mercer coal. ee0eecee: Coal No. 3. 0000S ceoeeFeo2ee DAG008 BE0008 Blue limestone coal, 
Wick & McDowell’s 
coal of Canfield, Flint 
Ridge cannel. 
2. Quakertown Coal............| Coal No. 2. .............sececrseevesscoee Wellston (?) 
1. Sharon CORE ee ans Coal No. 1. 2000S OOO PESSSEHSTHESTFGHGSEOSEA eE8 Block coal, Brier Hill, 
Youngstown, Massil- 
lon, Jackson shaft (?) 
