24 GEOLOGY OF ILLINOIS. 



seam reported 4 feet thick in the bore, but on reaching it in the shaft 

 it proved to be 2 feet of bituminous shale and 6 inches of coal. 

 The report of this bore is as follows : 



Ft. In. 



1. Soil and clay 4 



2. Shale 15 



3. Sandstone 10 



4. Clay shale 6 



5. Coal, No. 10 1 



6. Fireclay 13 



7. Limestone 3 



8. Fire clay 5 



9. Limestone * 2 C 



10. Shale 8 



11. Coal, No. 9 ? 3 6 



12. Fire-clay 4 



13. Sandstone 43 



14. Shale 5 



15. Hard sandstone 4 



16 Shale 8 



17. Gray sandstone 8 



18. Shale 12 



19 Coal, reported 4 



20. Fire clay 5 



21. Pebbly shale 4 



22. Dark shale 15 



23. Gray sandstone 4 



24. Dark shale : 39 



25. Gray sandstone 17 



26. Black shale 3 



27. Eotten coal, No. 8 ? 3 



28. Fire-clay 3 



29. Sandstone 22 



30. Shale 5 



31. Sandstone 4 



32. Soft variegated shale 30 



33. Shale, with tarry substance and fetid odor 7 



34 . Hard sandstone 4 



323 



If any reliance can be placed on the reported section of this boring, 

 it must have passed through coals Nos. 10, 9 and 8, of the general section 

 of the Illinois Coal Measures, and it is noticeable that in the shaft suuk 

 at the landing, they found two thin beds of limestone over the coal at 

 the bottom of the shaft, coal No. 9, showing that although this limestone 

 has thinned out very much from what its outcrop shows in Clark county, 

 it has, nevertheless, not quite disappeared. This coal was reported in 

 the boring at 4 feet, -without any recognition of the bituminous shale 

 above it, while in the shaft that was sunk down to this horizon in the 

 anticipation of finding a good seam of coal, the bituminous shale proved 

 to be 2 feet thick and the coal only 6 inches. 



The rotten coal No. 27, of the foregoing section, probably represents 

 coal No. 8, which, in Gallatin county, is from 50 to 75 feet above No. 7, 

 though no trace of the latter was reported in this bore. The coals 



