This is followed by chemical analysis…

“Throughout the course of the first years of peace, marked improvements were achieved in the diagnosis and treatment of syphilis. The distribution of the paraboloidal or black background condensers helped to find Treponema, the colouring procedures of which had already been perfected by the silver impregnation method (Fontana), while continuous perfectioning of the Wassermann type colorimetric reactions, and especially Porges’ discovery of the agglutinating faculty of the syphilitic serums on the lipic suspensions, cleared the way to the most sensitive and specific agglutination reactions (Meinicke, Kahn, Garriga, Müller, etc.). On the other hand, when Ehrlich’s theory on intraorganic parasitotrope therapy was in full regression, the research done by Wagner von Jauregg, Kirle, etc., using the exaltation of natural defenses through paludization and the protein therapy, allowed positive results to be achieved in those syndromes – tabes, general paralysis – which had, until then, been inaccessible for the most daring and violent therapeutic assaults. Finally, Levaditi, continuing Balzer’s studies, managed to find certain bismuth preparations with immediate effectiveness in the treatment of syphilis”.