. . "Photographs - 101 photographs, including portraits of Bredig and his colleagues, laboratory settings in Leipzig and Heidelberg, as well as scientific buildings in Europe. Includes images of Wilhelm Ostwald, Svante Arrhenius, Ernst Cohen et al."@eng . "Photographs - 101 photographs, including portraits of Bredig and his colleagues, laboratory settings in Leipzig and Heidelberg, as well as scientific buildings in Europe. Includes images of Wilhelm Ostwald, Svante Arrhenius, Ernst Cohen et al."@eng . .