His chief works are Geographical Essays (ed. D. W. Johnson ... J. N. L. B. DAVISSON, Clinton Joseph (1881-1958), American physicist, was educated at Chicago and Princeton universities. He joined ... He travelled widely abroad, opposing imperialism and exploitation. ... D. B. Q. DAVOS, district drained by the Landwasser, lying in the Alps of eastern Grisons, Switzerland, 16 mis SE. of Chur (40 by rail).