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The editors wish to thank the European Science Foundation for its support of the programme on the Evolution of Chemistry in Europe, 1789-1939, as well as for sponsoring the publication of this volume. Through the subdivision of this initiative that deals specifically with chemical industry it has been possible for historians of science, technology, business and economics to share often widely differing viewpoints and develop consensus across disciplinary and cultural boundaries. The contents of this volume are based on the third of three workshops that have considered the emergence of the modern European chemical industry prior to 1939, the first held in Liege (1994), the second in Maastricht (1995), and the third in Strasbourg (1996). All contributors and participants are thanked for their participation in often lively and informative debates. The generous hospitality of the European Science Foundation and its staff in Strasbourg is gratefully acknowledged. Introduction Emerging chemical knowledge and the development of chemical industry, and particularly the interaction between them, offer rich fields of study for the historian. This is reflected in the contents of the three workshops dealing with the emergence of chemical industry held under the aegis of the European Science Foundation's Evolution of Chemistry in Europe, 1789-1939, programme. The first workshop focused mainly on science for industry, 1789- 1850, and the second on the two-way traffic between science and industry, 1850-1914. The third workshop, dealing with the period 1900-1939, covers similar issues, but within different, and wider, contexts.