104 THE ALLEGHANY COAL FIELD. 



Feet. 



16. Grit — embracing twelve feet of Shale and kidneys of 

 Iron Ore and a thin seam of Coal, - - - - 90 



17. Iron Ore — calcareous, 1 



18. Grit and Shales, embracing two layers of Iron Ore, 



also twenty inches of Coal at level of high water of 

 the Ohio River, Symmes' Creek, 8 miles from mouth, 120 



547 



This appears to be near the base of the "lower Sandstone 

 group," as defined on the opposite bank of the Ohio River, 

 in Virginia, by Mr. Briggs. 



No. 11. 



SECTION OF THE COAL ROCKS ON THE NATIONAL ROAD AND THE 



MUSKINGUM RIVER. FROM THE OHIO REPORTS. 



Feet. 



1. Conglomerate, surface at Brownsville, Ohio, two 

 hundred feet above Lake Erie. 



2. Sandstone and Shale, 50 



3. Coal — thickness variable, .... 3 



4. Limestone^ 2 



5. Sandstone and Shale, 130 



6. Limestone^ - 3 



7. Sandstone, 70 



8. Iron Ore^ thin, ) ^ „.„ 



.] 



9. Buhr Stone, two to six feet, - 



10. Grit, 20 



11. Shale, 15 



12. Coal, 2 



13. Sandstone — argillaceous, . . . . 15 



14. Coal, 2 



15. Shale, 10 



16. Grit, (Island Run, Muskingum River,) - - 25 



17. Shale, 30 



18. Limestone, with fossils, - - - - - 8 



19. Black Shale, 3 



20. Coal, (Pomeroy bed,) 5-398 



