914 GEOLOGY OF OHIO, 



rectly above the limestone. This is counted in under the number given 

 above, for, though differing in age, it belongs to the same vital node. 



Coal No. Ilia seldom reaches thirty inches in thickness, and seldom 

 falls below twelve inches. In some neighborhoods it is known as the 

 sixteen-inch seam. It is found of this thickness at McCuneville, at 

 Baird's Furnace, and at Haydenvilie ; while in Vinton county it makes 

 a showing of four feet, from the fact that it includes a bed of black slate 

 in the middle of the coal. To the east of McArthur it is, an this account, 

 known as the slate seam. For a short distance south of the Marietta 

 Railroad, it is a chief dependence for local supply, especially in Madison 

 township. It is there called, locally, the Kelly Coal. It is thin through 

 the southern part of Vinton and the northern part of Jackson ; but in 

 Jefferson township, Jackson county, it again reaches a thickness of six- 

 teen to twenty inches. It holds these dimensions southward through 

 Scioto county. It has been worked for neighborhood use oa Monro* Fur- 

 nace, and also on Scioto Furnace lands. It seems probable that it 

 makes the Hunnewell Cannel of Northern Kentucky. 



5. Coal No. 1116, the next reliable seam to be reached in ascending the 

 scale, lies twenty or thirty feet above the last named horizon. It is the 

 most valuable seam thus far found above the Wellston Coal, and is vastly 

 more extensive and steady than it. It is known tohavebeen worked for the 

 general market but in one instance, viz., at Vinton Furnace^ The com- 

 mercial seam opened there is the one now under discussion. The seam 

 at that point measures five feet, partings included. The quality is fair. 

 The same seam, holding the same thickness and quality, is found in the 

 tunnel of the Columbus and Gallipolis road, at Eagle Furnace. On the 

 general section, the Tunnel Coal is wrongly identified as No. IIIc. For 

 local supply this seam is largely depended on. It is a thirty inch seam 

 in the neighborhood of Union Furnace, Hocking county, being here over- 

 lain by two feet of highly bituminous shale. It holds through southern 

 Hocking and northern Vinton, attaining its maximum near the line of 

 the Marietta Railroad, as already described. Southward it keeps its place 

 quite steadily, though it is generally less than twenty inches in thick- 

 ness. There is a greater multiplicity of coal seams through the southern 

 part of Vinton county than in any other part of this district. The exact 

 equivalent of Coal No. III6 in this region can not be certainly given here 

 but it is probable that the Wortman dal, which lies about fifty feet below 

 the Gray Limestone, is the seam sought for. If it is not, the thin seam 

 tan feet below represents it. 



On the lands of Monroe Furnace, this seam has a thickness of three 

 and one-half feet, slate parting included. It has been worked here to 



