“…reports have demonstrated that atmospheric pollution of lead (Pb), caused principally by com--bustion of leaded gasoline and liquid and vapor wastes from coal-burning and metal-melting establishments, has contributed to the increased Pb content of waters (Johnson, Rossano, et al, 1966;Tsaihwa, 1966), plants (Cannon and Bowles, 1962;Everett, Day, et al, 1967;Lagerwerff, 1966), and soils (Cannon and Bowles, 1962;Lagerwerff, 1966;Marten and Hammond, 1966) in industrial and urban areas. But information relative to accumulations in soils is fragmentary and inadequate.…”