Whittlesey.] 190 [November 18, 



direction of the strike. The limestone, only a few feet beneath it, 

 passing beneath the summit 634', extending easterly to the waters of 

 Little Beaver, around Dungannon, five miles farther, is on that line, 

 substantially level, or 540' A. From there to New Lisbon, five miles, 

 a little north of east, No. 6 is reported to be 515' (N.), but without the 

 limestone. At Arter's mine, five miles northwest of New Lisbon, it is 

 530' (W.). Over this space, about twelve miles by five, the only in- 

 clination yet detected is to the south. 



At fifteen miles south, near Irondale, the presumed No. 6 is at an 

 elevation of 330', rising to the northwest at the rate of 50' per mile. 

 No general undulation of the beds in a north and south direction 

 could produce these results. 



If there is an axis of elevation between Hanover and Salineville, 

 it must bear northeast and southwest. The Sandy Creek valley 

 group, if it rises, rises over this axis, and must be visible in the 

 ravines at the head of the west fork of Little Beaver, in Franklin 

 township. Two miles along the track from the summit, where the 

 railroad grade is 542', the Salineville '' Strip seam " is found at 44 V 

 A., rising rapidly to the west. 



The Salineville No. 6, if it exists there, is 40' to 50' lower. At 

 the nearest point of the Sandy group, eight miles northwest, the ar- 

 rangement of beds is entirely different, and therefore I infer that the 

 two groups are independent. I have shown that the Irondale group 

 and the Salineville group cannot be matched. 



In the eastern part of Columbiana County, near the State line at 

 Achor, No. 6 is reported to be 430' A., while at the Arter mine, about 

 fifteen miles north, 20° west, it is 530'. This difference in that direc- 

 tion, instead of being evidence that the strata dip to the east, shows 

 only that Achor lies below the line of bearing, which is north of east, 

 and the bed should be lower at that point, on the theory of regularity. 



Returning to Coshocton County, at the southwest, I have con- 

 structed a series of triangles in different beds of the series ; carrying 

 them forward consecutively to the north and east, over the same 

 ground as the radial, to the State line in Mahoning County; many 

 of which were published prior to the present survey. 



In this investigation I use the additional elevations given in the 

 Report, although in several instances they are not correct. Observa- 

 tions with a barometer carried in the field are not reliable to identify 

 strata which lie vertically so near each other, or which have so large 

 local irregularities of level. Coal seams Nos. 5 and 6, over a large 



