146 GEOLOGY OF OHIO. 



It will be noticed that in this section a bed of limestone occurs near 

 the surface, and that the lower part of the boring was in a thick bed of 

 sandstone. This sandstone is the massive stratum which overlies the 

 Briar Hill coal, sometimes coming down to it, and sometimes even cut- 

 ting it out completely, but more generally resting upon a bed of shale of 

 variable thickness. The place of Coal No. 1 is plainly below the bottom 

 of this hole. 



Since my first visit to Edinburgh, Mr. Chapman has continued his ex- 

 plorations, and others have been carried on by Mr. D. W. Goss, but, so 

 far, I believe, without very satisfactory results. The many borings made 

 show great irregularity in the deposition of the strata here, and it is evi- 

 dent that this has been a region through which rapid currents-" of water 

 have swept, which have cut away the coal seams, and deposited sands and 

 clays in a very unequal way. This will be evident upon an examination 

 of the records of some of the drillings. A well bored one mile north-east 

 of the Center gave— 



FT. 



1. Earth 20 



2. Shaly sandrock 



3. White sandrock 39 



4. Blue shale 3 



5. Fire-clay 3 



6. Shale, -with coal streaks 4 



7. Fire-clay ,....,,., 1 



8. Shale : 4 



9. Black, coaly shale 2 



10. Shale 3 



11. Fire-clay 2 



12. Shale 37 



13. Very hard sandrock 8 



14. Fire-clay 1 



15. Shale 42 



16. Fine sandrock 24 



17. Sandrock gjj 



18. Softshale 3 



19. Fine, blnish sandrock 45 



20. Gray shale 50 



21. Shale and sandrock 3ji| 



22. Bluish-gray shale 21 



It is evident that this boring has gone far into the Waverly, and it 

 reveals the fact that the Conglomerate is here absent. This is somewhat 

 surprising, as in the valley of the Mahoning, only a few miles distant, it 

 is fully one hundred feet in thickness. 



