184 GEOLOGY OF OHIO. 



served. In Fox township it is constant at from ten to fifteen feet below 

 the limestone, but is always very thin. 



Coal No. 7 a is found at from sixty-five to ninety feet below No. 7 h. It 

 is traceable with extreme difficulty, partly because it is not persistent, 

 and partly because of the varying intervals between it and No. 7 h, above, 

 and No. 7, below. At several localities No. 7 is found at a horizon, rela- 

 tive to the Crinoidal limestone, precisely the same as that occupied by 

 No. 7 a at others, and in each case there can be no doubt respecting the 

 identification of the coals. The relations of No. 7 and No. 6 to the Crin- 

 oidal limestone are equally peculiar over ■& large portion of the county, 

 the interval between the two coals varying from thirty-five to one hun- 

 dred feet. These facts are certainly conclusive against any alleged par- 

 allelism of coal beds over a large area. 



In south-western Perry, not far from Mastersville, No. 7 a is seen on the 

 farms of Messrs. Minnick, John Suary, and B. Borland, where it is about 

 eighteen inches thick, overlaid by an equal thickness of very good plate 

 ore, which is certainly deserving of careful investigation. Erosion has 

 removed the overlying deposits from a considerable area, so that the ore 

 can be reached without much stripping. Specimens of this ore were 

 obtained from Mr. Borland's farm, but, unfortunately, have been mislaid 

 or missent, and we are unable to present an analysis. About one mile 

 north from Perrysville, in the same township, this coal has been experi- 

 mentally opened by Mr. Othniel Baker. When examined, the opening 

 was not sufficiently extended to give any definite idea respecting the 

 value of the bed. It appears to be about four feet thick, parted midway 

 by about six inches of clay. It is sixty-five feet below No. 7 h. Near 

 L«esville, Orange township, it is seen, but is very thin, and is not worked. 

 At Harlem, Lee township, this coal is opened on Mrs. Harris's property, 

 is twenty-two inches thick, and good for domestic use, but contains a 

 notable percentage of sulphur. On the adjoining farm of Mr. James 

 Thompson it is a bituminous coal, two feet thick, with a good deal of 

 pyrites. Fourteen feet below it is a cannel seam, fifteen inches thick, 

 which appears to be local, having been observed at no other place where 

 No. 7 a is exposed. 



Coal No. 7 is or has been worked in Orange, Harrison, Center, and Fox 

 townships. In Orange township the openings are numerous, and the 

 bed is of much local importance. At Leesville Mr. J. C. Price works it 

 by means of a shaft thirty-five feet deep. He finds it four feet thick, 

 without regular partings, and of nearly the same quality throughout. 

 Pyrites occurs in streaks at various intervals through the bed, but is 

 more abundant at the bottom. Nodules are by no means rare, and fre- 



