90 GEOLOGY OF ILLINOIS. 



A shaft was commenced near where this boring was made, and carried 

 down to the depth of one hundred and fifteen feet, mainly through 

 sandstone and sandy shale. The flow of water in the shaft was so 

 strong as to seriously interfere with the prosecution of the work, and 

 finally filled it to within about five feet of the surface of the ground, 

 where it still remains. The shaft terminated in the heavy bed of 

 sandstone Xo. 4 of the preceding section. Another boring two miles 

 to the westward of this, near the Fair Grounds, was reported as follows : 



Ft. In. 



1. Soil and drift clay 13 



2. Sandstone •. 40 



3. Clay shale (soapstone) € 7 



4. Hard gray sandstone . '38 



5. Hard rock (probably sandstone) 3 



6. Sandstone 47 



7. Impure limestone 4 



8. Black shale. 8 



9. Limestone 8 6 



10. Clay shale (soapstone) : .' 37 



205 6 



These borings commence at least forty or fifty feet below the coal 

 and limestone north-west of Louisville, and were discontinued before 

 reaching the horizon of any workable coal. The boring at Xenia was 

 carried to the depth of 450 feet passing through three thin coals, o'ne 

 of which was reported to be four feet thick. The following is the section 

 of this boring as furnished by Captain Dyer: 



Ft. In. 



1. Soil and drift 14 



2. Clay shale (soapstone) 02 



3. Bluish-gray sandstone 31 



4. Coal, So. 13! 9 



5. Crevice ? (probably soft fire-clay).. 1 6 



6. Clay shale (soapstone) 3 



7. Limestone 1 6 



8. Conglomerate -_ 3 



9. Bluish-gray sandstone 4 



10. Blue shale 64 



11. Hard rock 1 



12. Black shale, No. 12 ? 9 



13. Sandstone 12 



14. Blue shale 14 6 



15. Coal, No. 11? 4 



16. Fireclay 6 



17. Sandstone 15 



18. Pebbly rock 2 



19. Shale 2 6 



20. Blue shale 29 



21. Micaceous sandstone 4 



22. White sandstone 4 



23. Bock with a few fossils 1 



24. Coal, No. 10? 1 6 



25. Fire-clay 2 6 



26. Sandstone 11 6 



27. Blue shale 4 



28. Sandstone 2 



