Amphicvelia Cedar Milleres, Type at Princeton, Clayville, Cedarville Ohio Singulara quadrata Eichwald, Fruit m. Lewis Co., NY. Manual P 507, pg 647. Outer shell layer black, concentric striae. Inner shell layer white, + numerous radiating striae, especially in middle part, distinctly do not show in outer shell. Strong median septum, grid central scars. Concave laterals. Concavely curved as in cincture fissures. Anterior margin convex as in Hallist Clark's figures. Principles of Stratigraphy Brahman A G Sailer & Co., NY. North American Under Fossils, P 12.00. Hyolithes is a true Oterolend. Slide shown with "wings" Walcott. Might, Red Jasper conglomerate + Lake Superior copper casts? as far east as eastern Ohio? Revolution glaciation. Revolution glaciation preceded Labrador glaciation. Feretts (+ Champlain) Revolution + Labrador ice sheets came down contemporaneously, not from Revolution first. Lt/Surling Victoria Memorial Museum Ottawa Ont. Parkes, Fortuni & Penn.