290 GEOLOGY OF ILLINOIS. 



to five feet. Though thinner, this seam is more extensively worked than either 

 of the others. It is worked along Cedar creek, on section 19, township 11, 

 range 1, and sections 13, 14, 23 and 24, township 11, range 2. Also, in the 

 latter township, there are other mines along Honey Run and its branches, in 

 sections 25, 35 and 36. The strata were reported by the miners to be, in this 

 neighborhood, as follows : 



FT. IN. FT. IX. 



1. Drift, not measured 



2. Clay shale ('-soapstone") 10 to 20 



3. Limestone 6 



4. Blue clay, shale and black slate 2 to 2 6 



5. Coal, No. 2 of Illinois section 1 8 to 2 3 



6. Fireclay 3 to 8 



1. Bituminous limestone '. 2 to 6 



8. Clay shale ? 



9. Thin coal ? 



The coal is of good quality, and, though containing some pyrite (the " sul- 

 phur" of the miners), it is easily freed from it. 



In sections 23 and 26, township 10, range 1, mines have been opened. We 

 again find this seam worked in section 3, township 9, range 1. In this locality 

 there is sometimes two or three inches of cannel coal at the top of the seam. 

 South of this, in township 8, range 1, there are mines in sections 23 and 26. 

 Though the coal here is but one foot six inches thick, large amounts of supe- 

 rior coal are taken from these mines. 



From the blufis of Nigger creek, sections 14 and 23, the following section 

 was obtained, which gives a general idea of how the strata lie in this region : 



FT. 



1. Clay shale 



2. Coal, No. 2 of the Illinois section 



3. Fire clay 



4. Clay shale 



5. Coal and black slate 



6. Clayshale 1 



7. Sandstone 



8. Clay shale 20 



9. Sandstone or arenaceous shale 3 



10. Arenaceous shale 2 



11. Clayshale 



12. Coal 



13. Sandstone 1 



14. Clay shale 



15. Slaty coal 



16. Sandstone or arenaceous shale 



17. Clayshale 



18. Coal 



