Diagram illustrating the relation of the Dansville to the Wayland Valleys. The floor of the Wayland Valley at Wayland has an elevation of 1372 feet. Its continuation on the extreme left hand of the diagram is 1300 feet. The elevation of the Dansville Valley at Dansville is 700 feet. Both valleys are partially filled by drift. The streams which dissect the Wayland Valley have cut narrow gorges in the rock bottom.
Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 777