Leonard Bloomfield (1887-1949) was one of the greatest linguists of the twentieth century. He devoted his entire life to a thorough-going study of language, its structure and its use, summed up in masterly fashion in his book Language (1933). After his premature death at the age of 62, his work was at first acclaimed as an exemplary application of the scientific method to linguistics, but then fell into unjustified neglect. Now that the centenary of his birth has passed, the time has come for the story of Bloomfield's life and work to be recounted in a biography. Accordingly, basing his