KNOX COUNTY. 315 



In some mines this coal runs as thick as six feet, but the section above given 

 shows its more common thickness. At the mines of P. Peterson, Esq., in the 

 northwest part of the northwest quarter of section 32, and some others in the 

 vicinity, the coal was thicker than in the mines in the northern part of the 

 township. The overlying limestone is here quite hard and durable, and is 

 worked somewhat for building stone. In township 12, range 3, mines have 

 been worked in sections 1, 10, 1,1 18, 19 and 20. East of Wataga, township 

 12, range 2, in sections 13, 15, 22, 23 and 24, much coal has been taken from 

 this seam. From the mines of John A. Leighton, Esq., in section 12, the fol- 

 lowing section was obtained : 



FEET. IN. 



1. Clay shale. Not measured. 



2. Limestone 1 foot 6 in. to 2 



3 . C 1 ay 6 



4. Black slate 8 in. to 2 



5. Coal . . 4 2 



8. Clay. Not measured 



The clay parting here varied from two to four inches in thickness. Near the 

 center of section 24, limestone is found in considerable quantities, which makes 

 good lime. 



In township 11, range 3, there are mines in sections 3, 4 and 5, and the coal 

 is reported to belong to this seam, and to be from four to five feet thick. In 

 section 15, towHship 10, range 4, the coal appears along the bluff a number of 

 feet above the stream. The following section was obtained here : 



FEET. IN 



1. Limestone. This is sometimes replaced by two feet of black shale 1 to 4 



2. Clay, containing limestone nodules 6 



3. Coal, clay parting from one to two inches thick 5 8 



4. Clay 10 " 12 



5. Sandstone 3 " 5 



6. Clay shale 8 " 12 



The limestone, No. 1 of the section, is worked at this place, and the fol- 

 lowing fossils were obtained from it : Productus Prattcnanus, Chonetes Flemin- 

 gii, Yoldia Knoxensis ? and some others not identified. This limestone is again 

 exposed and worked in the southeast quarter of section 25, township 9, range 

 4. It is quite hard at this point, and makes a valuable building stone, and 

 being four feet thick, can be quarried more readily than at most other locali- 

 ties in this vicinity where it is thinner. It also forms a good roof for the coal 

 below, there being but six inches of shaly limestone between. This seam is 

 worked in sections 23, 24, 31 and probably 32 and 33. There is also a mine 

 in section 35, township 9, range 3. At this point the coal is found high up in 

 the hill and is reported to be somewhat rotten. 



