Dubos's classic biography of Louis Pasteur, originally published in 1960 and for several years out of print is once again made available in this new and expanded hardcover edition. The original work has been enlarged by more than forty illustrations and tables, a new biographical sketch of Dubos, a glossary of technical terms and a chronological outline of Pasteur's career. The book's enduring appeal is a tribute both to its subject and to its author. Few scientists so captured the public imagination as Louis Pasteur, and fewer still had such a dramatic effect on everyday life. Dubos, a Pulitzer prize winner, was a modern biographer almost ideally suited to the task. A distinguished French-born microbiologist of broad culture, Dubos had a deep appreciation for the power and enduring significance of Pasteur's scientific work. To the more personal dimensions of the biographer's task, Dubos brought his keen insight into the wellsprings of human action, behavior, and personality. He thus appreciated the full range of Pasteur's life, including its philosophical, religious, and political dimensions. Finally, Dubos' graceful writing style allowed him to convey the excitement and significance of even the most technical aspects of Pasteur's work.

Lake Mendota has often been called "the most studied lake in the world. " Beginning in the "classic" period of limnology in the late 19th century and continuing through the present time, this lake has been the subject of a wide variety of studies. Although many of these studies have been published in accessible journals, a significant number have appeared in local monographs and reports, ephemeral documents, or poorly distributed journals. To date, there has been no attempt at a synthetic treatment ofthe vast amount of work that has been published. One intent of the present book is to present a com prehensive compilation of the major early studies on Lake Mendota and to examine how they impinge on important present-day biological questions. In addition, this book presents a summary of field and laboratory work carried out in my own laboratory over a period of about 6 years and shows where correlations with earlier work exist. The book should be ofinterest to limnologists desiring a ready reference to data and published papers on this important lake, to biogeochemists, ocean ographers, and low-temperature geochemists interested in lakes as model sys tems for global processes, and to lake managers interested in understanding short-term and long-term changes in lake systems. Although the major thrust ofthe present book is ecologicaland environmental, sufficient background has been presented on other aspects ofLake Mendota's limnology so that the book should also be useful to nonbiologists."