Ulrich Charpa (Herausgegeben von) Research Professor at the Leo Baeck Institute in London and Professor of Philosophy at the Ruhr-Universität Bochum.Ute Deichmann (Herausgegeben von) Research Professor at the Leo Baeck Institute in London; director of the Jacques Loeb Centre for the History and Philosophy of the Life Sciences, Ben-Gurion University of the Negev, Israel, and group leader, history of the biological and chemical sciences project, University of Cologne.

• I. Introduction by the Editors: Problems, Phenomena, Explanatory ApproachesII. Research practices, achievements, contextsUte Deichmann: Empiricism and the Discreteness of Nature. Ferdinand Cohn (1828-1898), the Founder of Microbiology - Anthony S. Travis: German-Jewish Chemists and Raphael Meldola. The 1906 Celebrations for the Discovery of the First Aniline Dye - Moritz Epple: An Unusual Career between Cultural and Mathematical Modernism. Felix Hausdorff (1868-1942) - Ute Deichmann: 'I Detest His Way of Working'. Leonor Michaelis (1875-1949), Emil Abderhalden (1877-1950) and Jewish and non-Jewish Biochemists in GermanyIII. The impact of religious and ideological attitudesRaphael Falk: Three Zionist Men of Science. Between Nature and Nurture. Salaman, Bychowski, Bodenheimer - Ulrich Charpa: Aaron Bernstein's 'nächster großer Reformator'. Einstein, Reform Judaism, and the Fries School - Nurit Kirsch: Genetic Studies of Ethnic Communities in Israel. A Case of Values Motivated Research Work - Yael Hashiloni-Dolev: German and Israeli Attitudes towards Reproductive Genetics and the Effect of ReligionIV. Anti-Semitism in academiaAharon Loewenstein: Dogmatic and Pragmatic Physics. Stark on Aryans, Jews and White Jews in Physics (appendix: Johannes Stark, "The Dogmatic and Pragmatic Spirit in Science", 1938) - Ruth Sime: No Return: Jewish Émigrés and German Scientists after World War IIV. Simone Wenkel: Prosopographical Data: An Overview