534 GEOLOGY OF OHIO. 



Ft. In. 



4. Not seen 26 



5. Laminated sandstone 6 



6. Clay slate 10 



7. Coal v 4 7 



8. Clay parting 2 



9. Coal 1 4 



10. Underclay 2 6 



11. Sandy shale (not measured). 



(Map XII., No. 9.) 



This coal is extensively mined by Mr. Scott, and shipped by the Cen- 

 tral Ohio Eailroad. It is used for household purposes, for steam-making, 

 for locomotives, and in rolling mills. It is an excellent coal. 



At the mining works of Pordyce & Co., about a mile west of the Scott 

 bank, large quantities of this coal are mined and shipped by railroad, 

 and considerable is made into coke in coke ovens. The Cambridge coal 

 is always quite bituminous and somewhat caking in character. It is 

 highly esteemed by those who prefer a coal of this class to the dry burn- 

 ing coals. 



The following is a record of salt well No. 2, bored by Mr. Scott : 



Ft. In. 



1. Level of the Cambridge seam. 



2. Soil, etc .' 18 



3. Gray sandrock 32 



4. Not known '. 10 



5. Coal 1 6 



6. Fire-clay 3 



7. Limestone 1 6 



8. Soapstone 6 



9. Shale and fire-clay 26 



10. Black slate 10 



11. Shale 12 



12. Coal 10 



13. Soapstone 40 



14. Coal 1 2 



15. White fire-clay 20 



16. Blue sandstone (oil rock) 44 



17. Black shale 31 



18. Limestone 11 



19. Shale 14 



20. Iron ore, very hard 1 6 



21. Shale 69 



22. Hard black rock 6 



23. Shale 83 



24. Stratum charged with sulphuret of iron 3 



25. Interval not recorded 215 7 



26. White sandrock 40 



