[On the track of "scientific pursuit". Franz Josef Kallmann (1897-1965) and genetic racial research].

When the National Socialist state was created in 1933, an exodus of anti-Nazi elite began. However, some researchers who were forced to leave Germany approved Nazi eugenic politics, even as Jews. One of them was the psychiatrist Franz Josef Kallmann, a researcher on schizophrenia, who demanded an even more radical sterilization policy than the Nazis. He co-operated closely with the German Research Foundation for Psychiatry in Munich and its leader, Ernst Rüdin. From Rüdin he received help in leaving Germany and finding a job in USA, and Rüdin's assistant, Theo Lang, delivered data-material from Munich to New York. After 1945 Rüdin got a denazification certificate from Kallmann who already co-operated again with Lang.