Shelby City. One mile northeast of the water tank along the Cincin- nati Southern, another fork of Knob Creek shows exposures of the brecciated Devonian bed, just where it crosses road while extends parallel to the railroad, half a mile south of the same. From the station at Shelby City the road goes southward half a mile, and only a short distance east of its junc- tion with the road just mentioned, the brecciated bed is well exposed. Follow- ing the creek southward into a partly wooded field the limestone with large nodules and irregular beds of chert is exposed. On ac- count of the southward dip of the archos this bed is exposed for a great distance just a- bove the creek bed. Fossils are not uncommon in the chert where it has been weath- ered out, as may be seen by fol- lowing the road following the west side of the creek. 218 Two miles east About half a mile east of Shel- by City defect the black shale is exposed along the railroad track. A short distance eastward a great quantity of chert locates the bed with abundant chert un- derlying the brecciated layer. The brecciated bed, and the beds below the cherty beds are not exposed. The Lower Silurian is seen in the creek bed on the south side of the railroad a short distance eastward. Only about 20 feet intervene between the black shale and the Lower Silurian. This certainly does not leave room for any Middle Silurian. 219 From this period eastward the creek banks show frequent exposures of Lower Silurian. Two miles east of Shelby City, where a road crosses the creek, the Lower Silurian contains considerable chert, some of the fossils even are turned to chert. Some of the layer contain pebbles of con- jectact blue rock, the largest peb- tles averaging 2 inches.