Ever since 1800 Webster had been the exponent of a doctrine of nationalism which now made him the chief defender of the idea of union. His debate with Hayne of South Carolina in 1830, commonly called The Great Debate, is a classic statement of the doctrine and the idea. For twenty years Webster was the voice of New England. He failed of election as President, but he had a notable, if brief, career as secretary of state under Harrison and Tyler, 184143, during which he concluded with Great Britain the important Webster-Ashburton Treaty. Once more in the Senate after 1845, Webster opposed the annexation of Texas and the Mexican War. As the struggle over slavery grew more violent he turned to the side of Clay and in the famous Seventh of March Speech defended Clays Compromise Bill, with the result that he was bitterly denounced in the North as a renegade. The same year he became secretary of state again. He died under a kind of cloud, 24 October, 1852, but there can be little doubt that he, more than any other one man, contributed to the growth of that sentiment of union which sustained the national idea during the Civil War.THE EDITORS.