1928. Whether to admire more the man or his method, the life or work, is left for the reader to decide. Among the researches that have made the name of Louis Pasteur a household word, three are of the first importance: a knowledge of the true nature of the processes in fermentation; a knowledge of the chief maladies which have scourged man and animals; a knowledge of the measures by which either the body may be protected against these diseases, or the poison neutralized when once within the body.