The Upper Clinton over of the Cement Mill has a thickness of about 95 to 105 Separating sandstone 30 inches. The Proleatus equivalent has a thickness of about 25 to 30 feet. My fossils are from the upper 8 feet. The 6-7 inch layer of oolite marks the base of the Salina or the Ludlow. The lithologic character of those beds in the many limestone bands between the calcareous shale are of the brutalume character, very a light colored (occasionally) impure arg. li. On first fracture a dark hue appearing in Ostracoda throughout. There some ostracoda from the basal beds and 2 pieces of the oolite, and another lot 40 feet higher.