176 Cincinnati Society of Natural History. 



of the same is a valley, on both sides of which the Clinton crops out. 

 Following this valley northwards to a low waterfall the Clinton is seen 

 to be underlaid by 5 inches of clay ; under this are 7 inches of bluish 

 shale, evidently only a phase of the blue clay. Below this is a layer, 

 7 inches thick, which is much firmer, and which has the character of 

 the Belfast bed as seen in some of the more southeastern exposures. It 

 is a bluish rock when freshly broken and can be split along the strati- 

 fication. While not hard, it is much firmer than the blue shaly layers 

 just above. Under this layer are 15 inches of blue clay. Beneath this 

 begins the Cincinnati limestone with a layer containing coarse branch- 

 ing bryozoans. Less than three feet of material represent therefore 

 the Belfast bed and the upper blue clay of the Cincinnati Group of 

 other sections. The firm layer, to which reference was made, alone 

 shows the characteristics of the Belfast bed. Following the little 

 streamlet northward, the Clinton is seen to be a coarsely crinoidal 

 rock, with scarcely a sign of a fossil except stromatoporoids. In the 

 fields, where tiling has in part replaced the open course of the stream- 

 let, a few fragments of Clinton rock of the higher horizons showed a 

 finer grain and contained Rhitwpora verrucosa, RhynckoneUa scobina y 

 Strophomena patenta ?, and Tllcenus daytonensis ? 



15. Thorp Farm. — About two miles northwest of Waynesville r 

 and two miles directly east of Lytle (Raysville), on the pike connect- 

 ing these two towns, is the farm formerly belonging to Stephen 

 Burnett, now the property of the widow Thorp, of Waynesville. 

 Crossing from the house to the north side of the pike, and then past 

 the barn diagonally westward through the orchard, a sort of gully is 

 reached. Near its lowest part the Cincinnati rock is exposed. Over- 

 lying this are about three feet and a half of a blue clay, breaking into 

 shaly fragments, or softening under the influence of the weather to a 

 homogeneous clay. At the top two or three inches are hardened and 

 brown. A side gully, running eastward, up the orchard already 

 mentioned, shows instead of this blue clay a brownish shale, of which 

 the pieces are very thin. This material corresponds in position to 

 the Belfast bed and underlying blue clay of more eastern sections. It 

 is evident that no part can here be discriminated as the Belfast bed 

 and as distinct from the blue clay usually found at the top of the 

 Cincinnati. Over this horizon is found the Clinton limestone, consist- 

 ing here of coarse rock, made up of innumerable crinoid fragments, 



