The New International Encyclopædia…
“ The soils of eastern Virginia are in general light and sandy, except in the bottom lands and in the marsh regions, where a deep layer of vegetable mold has accumulated. In the Piedmont upland the soil is generally more fertile, having been enriched by decayed greenstone material. The most fertile portion of the State, however, is the Great Valley, where the underlying rocks are ancient limestones, whose decomposed materials are admirably adapted for wheat and other grain. ”
