STAEK COUNTY. 173 



4. Coal No. 5 :i -i 



o. Fire-clay '.', 



6. Interval (cciYcred) 50 



7 . Limestone 1 



8. Coal No. 4 2 2 



9. Fij-e-clay 5 



10. Blark shale ..'. 6 



11. Coal N«. 3a..' :; 



12. Fire-clay and saudatoiie ti 4 



13. Black shale (5 



14. Coal No.:!? 4 



1,"). Black shale 8 



16. Fire-clay 3 



I have indicated above the numbers which I suppose belong to the 

 coals. The upper one is No. 6, here thinner and nearer No. 5 than usual. 

 The exposures of the upper portion of the section are very imperfect, the 

 underlying rocks being almost completely concealed between the station 

 at Alliance and Mt. Union, a vertical interval of nearly one hundred and 

 fifty feet. The top of the hill at Mt. Union undoubtedly reaches into the 

 Barren Coal Measures, but Coal No. 7 is thin or wanting; and if No. 6 occur- 

 red above the coal mined, it would be pretty sure to have been discovered 

 in wells or throuaih springs issuing from its outcrops. About Coals Nog. 

 4 and 5 there can be no mistake. The lower two coals I Uave sujiposed 

 to represent the lower two in the section at Zoar ;-^tiition, Tuscarawas 

 count}'-, as in all this region we frequently find a coal interposed between 

 the two limestone seams Nos. 3 and 4; but since it is a very unreliable 

 seam, and has nothing like the continuity and vahir of the others, it has 

 been designated as No. So.. It is, or was formerly, well shown in the rail- 

 road cut below Zoar Station, where it attains a thickness of three feet. 

 The distance which separates these three coals is, however, so small that 

 the middle one may only be an off-shoot from ol^e of the others, and be 

 quite local. As before remarked, these limestone coals are very variable, 

 and are prone to divide and form double seams. The coal of the lower 

 seam is said to be much the best. 



No limestone is found over the lower coal, but this does not preclude 

 its being No. 3, as its limestone is frequently replaced by calcareous 

 shale. The fire-clay under Coal No, 4 is here of excellent quality, and is 

 largely used for terra cotta, pottery, etc., by the Alliance Fire-clay Com- 

 pany. 



About Mineral Point, Tuscarawas county, Coal No. 5 is underlain by a 

 peculiar quality of fire-clay. This is non-plastic, and upon exposure 

 breaks into angular fragments, like flint. It has proved, however, to be 



