CLAY COUNTY. 93 



■was about three feet in thickness, and it probably overlays the limestone 

 and coal at Lanikins' place, though the exact connection between them 

 was not determined. 



On the S. E. qr. of sec. 21, T. 4, E. 6, a sandstone quarry has been 

 opened where the rock shows a perpendicular face from four to six feet 

 in thickness. The sandstone is overlaid by a buff colored shale sue. 

 ceeded by a black laminated shale containing concretions of black or 

 dark-blue limestone or septaria, containing a few fossils. 



On section 16, in the same township, a hard sandstone is found in the 

 bluffs of Crooked creek which resembles the rock at the quarry on 

 section 21, and it is here underlaid by slialy sandstone and shale to the 

 water level. If these sandstones are identical the section here would 

 show the following order of succession : 



Feet. 



Black laminated shale with septaria 5 to G 



Bnffordrab shale to 8 



Sandstone (quarry rock) 4toG 



Sandy shale, partial exposure 12 to 15 



Just below the mouth of Crooked creek, in the bluffs of the Little 

 Wabash, we find the following section: 



Feet. 



Soil and drift clay 12 to 15 



Soft shales partly argillaceous 15 



Irregnlarly bedded sandstone 3 to 4 



Sandy shales.: 12 to 15 



These beds outcrop at intervals along the bluffs of the stream from 

 the mouth of Crooked creek to Louisville, and at the old mill dam we 

 find nearly a repetition of the above section, as follows : 



Ft. In. 



Black laminated shale 2 to 3 



Coal , 6 



Buff and blue shales — partial exposure i 6 to 12 



Irregularly bedded hard sandstone : 4 to G 



Sandy shales extending below the river bed .*. 10 to 12 



The thin coal in the above section is locally overlaid by a few inches 

 of chocolate colored shale, passing into a hard blue limestone contain- 

 ing a few fossils, among which we were able to identify the following : 

 Productus Prattenianus, Ghonetes granulifera, Lingula umbonata f Pleu.ro- 

 tomaria carbonaria, Macrocheilus, etc. This thin coal is probably identi- 

 cal with that at Mr. Spikee's three miles north of Xenia, and is either 

 a local seam or else represents coal No. 15 of the general section. The 

 beds on the Little Wabash at Louisville underlay the limestone and 

 coal at Lamkins' place and on Dismal creek, but the exposures were too 

 isolated to obtain a complete section of the strata. 



.Four miles south- west of Flora, on a branch of Raccoon creek, sand- 

 stone and sandy shale outcrops along the bluffs of the stream for some 

 distance. The bed is altogether some ten or twelve feet in thickness, 



