284 GEOLOGY OP OHIO. 



IN. 



1. Eoof-coal 15 



2. Clay 6-20 



3. Coal 31 



4. Parting 2 



5. Coal 17 



6. Parting J 



7. Coal IC 



6.-,i 



Here the upper pyrites band is from eight to twelve inches below the 

 clay, and is sometimes triple. It is persistent. The clay, No. 2, contains 

 many thin streaks of coal, and, where thickest, usually contains a layer 

 from two to four inches thick. The coal, as exhibited here, is of very 

 fair quality, but when exposed to the weather it, in many portions, be- 

 comes covered with streaks of copperas, and, for the most part, shows a 

 decided tendency to slack. Near the outcrop the coal is beautifully irised. 



Half a mile further on, and very near the Jefferson county line, we find 

 Mr. M. F. Sterling's opening. At this we obtain the following section: 



FT. I.V. 



1. Limestone 



2. Shales :^-H 



3. Coal 1 1 



4. Clay 4-6 



.'). Coal 2 4 



6. Parting } 



7. Coal 1 3 



8. Parting i 



9. Coal 1 <H 



10. Parting : i 



11. Coal 1 



12. Fire-clay 3 



13. Liixiestone ." 3 



14. Shales and .sanilstone Ii.'i 



15. Limestone and shale ."S 



16. Shales 20 



Thickness of main coal, six feet to six lent two imlies. 



The roof-coal is quite good, though somewhat bony. It burns down to 

 a loose, white ash, which is bulky. The pyrites band occurs eight inches 

 below the clay, No. 4 of the section, but through the bed pyrites is not 

 of frequent occurrence. At all of these openings we find in the center 

 of the bed, both above and below the "bearing-in bench," especially in 

 the portion below, known as the " brick-coal," a very free-burning coal, 

 which, on the grate, shows no tendency to cake. It is very clean, and 

 suits well for blacksmithing. The lowest portion of the bed, usually one 



