ECONOMICAL (JKOLOUY. .-,.-> 



Ft. In. 



1. Surface soil 1 



2. Sandstone and shale 



3. Black shale 3 n 



4. Coal , 1 3 



5. Soft gray shale 2 1 



al 3 



7. Black shale 3 4 



8. Fire clay 1 2 



Total depth 75 



A boring at Effing-ham, which commences in about the highest 

 strata of the upper coal measures, was carried to the depth of 

 1.170 feet, passing through three workable coals in that dis- 

 tance. For the following copy of the record of this boring I am 

 indebted to Walton Rutledge, Esq., Mine Inspector of that dis- 

 trict : 



No. Ft. In. 



1. Yellow clay 16 



2. Hardpan 10 



3. White sandstone , 6 



4. Sandstone and shale % 



5. Blue limestone 2 



6. Black shale 3 



7. Sandstone and shale 187 



8. Limestone 2 



'.'. Shale 7;. 



10. Bituminous shale 1 



11. Coal 



12. Shale 35 



13. Coal 1 



II. Fire clay :> 



15. Sandstone and shale 19 



1C. Coal 8 



17. Calcareous shale 6 4 



18. Limestone 7 



19. Blue shale 7 



20. Limestone 7 



21. Calcareous shale 3 



22. Shale 44 



23. Coal o : -j 



21. Sandy shale 4 9 



25. Coal 8 



26. Shale 71 4 



27. Black slate > 



28. Shale and sandstone i:; 



29. Coal 1 2 



30. Blue shale 7 KJ 



31. Black slate 2 



32. Shale, part sandy 53 



33. Limestone 6 



31. Black shale 4 



35. Gray shale 52 



