Men of the old stone age : their environment, life and art (1916)
Osborn, Henry Fairfield, 1857-1935 · New York, Scribner · leaf 155
derstand the geography of the Somme at the time of the arrivalof the Pre-Chellean flint workers. It appears certain that allthree of the old river terraces composed of limestone had beencut long before and that the river had already reached the bottomlevel of the underlying chalk rock.11 The higher… … Fig. 57. Three ancient river terraces (I, II, III), on the west bank of the ConnecticutRiver in Vermont, believed to be of Postglacial age. The terraces are respectively140, 60, and 20 feet above the river, and thus show a profile similar to that of the ter-races on the Somme in Pre-Chellean times…
Prehistoric peoples · Stone age · Art, Primitive
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
