COAL MEASURES. 13 



Ft. In. 



No. 1. Soil and drift clay 24 



No. 2. Coarse limestone 4 



No. 3. Blackshale 2 



No. 4. Coal,(No.ll) 1 



No. 5. Fire-clay 1 8 



No. 6. Dark blue shale 3 



No. 7. Limestone G 



No. 8. Light-blue shale 30 



No. 9. Coal. (No. 10) '. 4 



No.10. Fire-clay 2 



No. 11. Light and dark shales 40 



No. 12. Fire-clay 20 



No. 13. Bituminous shale (i 



No. 14. Limestone, (Carlinville bed) 6 8 



No. 15. Bituminous shale 1 10 



No.lC. Coal, (No. 9) 3 



No.17. Fire-clay 1 6 



No. 18. Light-colored shales 58 



No.19. Soft limestone 2 



No. 20. Bituminous shale 3 



No. 21. Coal, (No. 8) . 7 



No. 22. Sandy shale 40 



No. 23. Variegated shales with streaks of coal 17 



No. 24. Sandstone in heavy beds, and shalo 55 



No.25. Hard limestone 5 



No.20. Coal, (No. 6) 6 



No.27. Fire-clay 1 8 



No.28. Clayshate 8 



No. 29. Limestone 27 



No. 30. Blackslate .2 to 4 



No. 31. Coal, (No. 5) 7 10 



Bottom of coal 373 5 



Several shafts have been sunk in Sangamon county since the pub- 

 lication of the former volumes of the geological reports, but in most 

 cases no detailed record was kept. At Girard it was about 340 feet 

 to coal No. 5. No details could be obtained of the first 190 feet, 

 except that a six-inch seam of coal was found at the depth of 1C4 

 feet. The following is a record of the lower part of this shaft : 



Ft. In. 



Drift, clay, shales, etc., details not given 190 



Coal, (No. 8) 1 4 



Shale, with iron bands at the base 71 



Fossilif erous limestone 10 



Blackshale 8 2 



Coal, (No. 7) 1 



Fire-clay 2 9 



Gray shale 19 



Fine black shale 1 8 



Coal, (No. 6) 6 



Fire-clay 3 3 



Impure limestone . 1 3 



Hard gray sandstone 10 2 



Dark gray shale 2 



Blue shale 1 1 



Limestone 3 4 



Light gray shale 3 3 



