Long ago one of our oldest French prehistorians, Gustave Chauvet, called attention to the probable existence of a wooden framework over the structures beneath tumuli. At a Congress of the A.F.A.S. held at Nantes in 1875 he described the digging of seven tumuli at La Boixe (Charente) containing burials of the polished Stone Age. Two of them covered true dolmens; others simple rectangular or circular cellae enclosed within small dry-stone walls.