Heinrich Caro (1834-1910) was the inventor of new chemical processes that in the two decades commencing in 1869 enabled BASF of Ludwigshafen, Germany, to take first place among manufacturers of synthetic dyestuffs. The cornerstones of Caro's success were his early training as calico (cotton) printer in Germany, and his employment at a chemical firm in Manchester, England. Caro was a creative research chemist, a highly knowledgeable patent specialist and expert witness, and a brilliant manager of science-based chemical technology. This first full-length scientific biography of Heinrich Caro delineates his role in the emergence of the industrial research laboratory, the forging of links between academic and industrial chemistry, and the development of modern patent law. Major chemical topics include the rise of classical organic chemistry, collaboration with Adolf Baeyer, artificial alizarin and indigo, aniline dyes, and other coal-tar products, particularly intermediates.

Most chemists today have either taken part in, or been affected by, the chemical revolution that has taken place over the course of the last century. Developments in instrumentation have changed not just what chemists do, but also how they think about chemistry. New and exciting areas of previously inaccessible research have been opened up as a direct result of this revolution. This is the first book to examine this instrumental revolution and goes on to assess the impact on chemical practice in areas ranging from organic chemistry and biochemistry to environmental analysis and process control, thus demonstrating how fundamental and extensive are the changes that have occurred. With contributions from internationally recognised specialists, this lavishly illustrated book provides a focal point for any historian of chemistry or chemist with an interest in this fascinating topic. This book is published in association with the Science Museum, London, UK and the Chemical Heritage Foundation, Philadelphia.

constitutive of reference in laboratory sciences as cultural sign systems and their manipulation and superposition, collectively shared classifications and associated conceptual frameworks,· and various fonns of collective action and social institutions. This raises the question of how much modes of representation, and specific types of sign systems mobilized to construct them, contribute to reference. Semioticians have argued that sign systems are not merely passive media for expressing preconceived ideas but actively contribute to meaning. Sign systems are culturally loaded with meaning stemming from previous practical applications and social traditions of applications. In new local contexts of application they not only transfer stabilized meaning but also can be used as active resources to add new significance and modify previous meaning. This view is supported by several analyses presented in this volume. Sign systems can be implemented like tools that are manipulated and superposed with other types of signs to forge new representations. The mode of representation, made possible by applying and manipulating specific types of representational tools, such as diagrammatic rather than mathematical representations, or Berzelian fonnulas rather than verbal language, contributes to meaning and forges fine-grained differentiations between scientists' concepts. Taken together, the essays contained in this volume give us a multifaceted picture of the broad variety of modes of representation in nineteenth-century and twentieth-century laboratory sciences, of the way scientists juxtaposed and integrated various representations, and of their pragmatic use as tools in scientific and industrial practice.

American Synthetic Organic Chemicals Industry: War and Politics, 1910-1930

The authors examine the relationship between the cultural, religious and social situation of German Jews on the one hand and their scientific activities on the other. They discuss the sensitive question of the specificity of the approaches of Jewish scientists and draw attention to the debate concerning the relationship between Judaism and academic research, ranging from the early 19th century theorizing on science and Judaism to 20th century issues, e.g. the controversies on 'Jewish' physics, mathematics etc. in the 1920s and 30s. Contributors: Ute Deichmann, Anthony S. Travis, Moritz Epple, Raphael Falk, Ulrich Charpa, Nurit Kirsch, Yael Hashiloni-Dolev, Aharon Loewenstein, Ruth Sime, Simone Wenkel

This volume explores the global history of natural dyes from the Americas and asks how their production and trade have shaped globalisation since early modern times. From their extraction and processing to their overseas trade, it shows how this commodity contributed to the rise of the textile industry and consumption in Europe, the United States and Latin America. In doing so, it sheds new light on the emergence of a global economy. Spanning several centuries, Colours, Commodities and the Birth of Globalization takes the reader from 1500 through the industrial revolutions of Europe and the United States and culminates in the synthetic age of the late-19th and early-20th centuries. Ranging from the indigo trade in the Atlantic to the secrets of the Indian production of cochineal, the chapters in this collection transcend nationally bounded historical narratives and explore transoceanic dynamics, imperial ambitions and the cross-cultural exchange of knowledge and techniques to better understand the birth of globalization.