Thb American Geologist, Vol. XXVIII. 
Fig. 1. — Concave parting in Medina sandstone, Slack's quarry, Hollj, N. Y., 
Looking W. 10° N. 
Fig. 'J. — Succession of four convex partings or ridges in Medina sandstone, 
Old Uuarry, Albion, N. Y. Looking S. W. 
Fig. 3. — Concave partings in Medina sandstone, Horan's quarry, Mcdiiui, .N. V, 
I-ooking S. E. 
"Beach Structures in Meuin.\ S.vnustune." — H. L. Fairchild. 
