This acclaimed biography tells the story of a towering figure in the history of science. Drawing on Pasteur's diaries, letters, and laboratory notebooks, author Rene J. Dubos offers a compelling portrait of a man who overcame adversity and opposition to transform the world of medicine. From his groundbreaking work with microbes to his development of the first vaccines, Pasteur's achievements revolutionized the world of science and medicine. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.