My thesis examines the process of industrialization in nineteenthcentury New England before the Civil War. I have attempted to achieve three principal objectives: first, the purely descriptive task of beginning to fill our present vacuum of detailed information on the American economy before 1840; second, to test the specific hypothesis that New England and perhaps other American regions would exhibit concentrated spurts of industrial output similar to those which characterized the emergence of modern economies in nineteenth-century Europe; third, to construct an explanation of the forces which determined the particular course of development which was observed.