146 



GEOLOGY OF OHIO. 



Analyses op Coal No. 5. 



Tunnel seam, Tuscarawas county. 



Whan seam, New Lisbon, Columbiana county. 



Roger vein, Elliottsville, Jefferson county. 



R. Miller, Liberty township, Guernsey county. 



Roger vein, Salineville, Columbiana county. 



Coal No. 6. 



This is probably the most interesting and important of all our coal 

 seams. It attains greater thickness, occupies a wider area, and in its 

 different outcrops and phases supplies a larger amount of good fuel than 

 any other. It also seems destined to make in the future still more im- 

 portant contibutions to the wealth of the State. In the remarkable 

 section which terminates the coal field at its north-western corner, in 

 Holmes county, Coal No. 6 is only two feet in thickness, but it is here par- 

 tially cut away by the heavy sandrock (Mahoning sandstone) which over- 

 lies it in so many localities. A few miles further east, near Millersburgh, 

 at the mine of Judge Armor, it is six feet thick, in two benches, the part- 

 ing being near the middle. Here it exhibits a character which it gener- 

 ally holds through northern Ohio, viz., it is a rather soft, but very bright 

 and black coking coal, containing a moderate amount of sulphur, but too 

 much to permit its employment for the manufacture of gas. Throughout 

 Holmes county Coal No. 6 is almost constantly present, running from 

 three to six feet in thickness, and is the source from which most of the 

 fuel used by the inhabitants is supplied. In Tuscarawas county it is 

 likewise the most important seam. On Stone Creek it is thin, but in ad- 

 joining localities it ranges from four to five feet thick. At Port Washing- 

 ton it is seven feet thick. Elsewhere, as at Trenton, Urichsville, Dennison, 

 Pike Run, New Philadelphia, the Goshen salt well, and in the valley of the 

 Connotton, it is nearly of the same thickness, from four to five feet. At 



