556 GEOLOGY OF OHIO. 



The two lower seams of coal in this section we believed to be the same 

 as the Barnesville tunnel seam and the one next below it. They, with 

 the limestone No. 27 in the above section, constitute a group which Mr. 

 Bundy and myself traced to Belmont. The coal in the deep cut just east 

 of Lewis's Mill could not be measured with perfect accuracy. There is 

 over it some hard black slate, which in places is rather a slaty coal. In 

 the second cut, east of Lewis's Mill, the lower seam of coal appears about 

 four feet above the track. The section here is — 



Ft. In. 



1. Sandstone, seen 1 



2. Shale U 



3. Coal 2 



4. Clay 3 



5. Coal 8 



6. Clay 4 



At the water station, a mile west of Warnock's Station, we find a seam 

 of cement limestone. The rapid descent of the railroad from Lewis's Mill 

 being greater than the dip of the strata, we have descended in the series 

 to the horizon of the cement limestone, twenty-two feet above the upper 

 Barnesville coal. In the cut at the water station this cement limestone 

 measures four feet six inches in thickness. The section at this point is 

 as follows : 



Ft. Id. 



1. Sandstone 26 



2. Coal 1 



3. Clay shale 25 



4. Dark-colored shale 3 



5. Sandstone, fine-grained 8 



6. Limestone layers and shales 6 



7. Shale 10 



3. Limestone 1 



9. Shale 1 



10. . Limestone 1 



11. Shale 1 



12. Limestone 2 



13. Shale 1 6 



14. Clay 8 



15. Cement limestone 4 6 



16. Clay shale 3 



Railroad track. (Map XIV., No. 6.) 



On the land of William Warnock, at Warnock's Station, we found the 

 cement limestone six feet three inches in thickness. The best exposure 

 is in the bank of the creek, above the railroad bridge. (See Map XIV. 

 No. 7.) Below the cement limestone are several feet of dark sandy lime- 



