ASHLAND COUNTY. 627 



(. 

 as is the cas3 with moat of the coarse sandstone of this part of the State, 

 contains so much magnetic iron-ore, that the compass cannot be used in 

 its immediate neighborhood. 



At George Brubecker's quarry, section 14, Milton township, this rock 

 is found one huadred and twenty five feet above its level in Ashland. It 

 is here a coarse sandstone, partly bedded in thin layers, partly massive, 

 yellow in color, blotched with iron stain, and, in places, passing into a 

 silicious iron ore. The layers are horizontal, the fossils crinoids and 

 fucoids. 



At Benjamin Croninger's quarry, section 3, MifHin township, the 

 Waverly is exposed one hundred and twenty- five feet below the stratum 

 at BrUjtecker's quarry, and on the level of Ashland village. The section 

 exposed is — 



FT. 



Coarse shaly sandstone 18 



Massive sandstone 8 



This is a fine-grained sandstone, irregularly colored with iron, and con- 

 taining pockets of soft iron ore and clay. In the ravine below, thin beds 

 of hard, sandy shale alternate with argillaceous shale. 



These beds of coarse massive sandstone apparently represent the 

 Waverly Conglomerate of Richland and Knox counties, although gen- 

 erally containing fewer pebbles, and approaching more nearly the char- 

 acteristics of the Cuyahoga shales of Summit county. In the north part 

 of Hanover township, the rocks on this horizon are in distinct layers, 

 and some of them have an abundance of quartz pebbles. 



Below, about twenty feet of soft argillaceous shales are exposed, con- 

 taining nodules of iron ore, and an abundance of the fragments of crinoids 

 and shells. 



The crinoid stems are in small pieces, and uniformly flattened. Of the 

 shells, very few are perfect, the thick portion about the hinge being gen- 

 erally all that is preserved, this retaining the original texture of the 

 shell. 



There are many outcrops of this series of rocks in the county not 

 referred to above, but those described are typical, and represent the gen- 

 eral character of all, except one in a ravine near the north part of Bug- 

 gies township. This is peculiar only on account of the organic remains. 



The lower layers of the exposed rock contain very large quantities of 

 the Spirophpon caudagalli (Hall), and a form resembling the S. typum 

 (Hall). The former is abundant upon the surfaces of the rock layers, and 

 the latter in the interior of the thickest layers. Some of these layers,' 

 twelve to twenty inches thick, of rock otherwise homogenous, are filled 



