In 1838, Congress having accepted the trust of John Smithson of L100,000, and pledged the faith of the United States for its purposes, Mr. Forsyth, the secretary of state, addressed Mr. Gallatin, at the request of the President, requesting his views as to its proper employment; but Mr. Gallatin does not appear to have answered the communication. The programme of the Smithsonian Institution, inclosed to the board of regents in its first report, stated its object to be the increase and diffusion of knowledge, and bears marks of the general views which Mr. Gallatin had for many years urged on public attention. The first of the Smithsonian "Contributions to Knowledge" was the memoir of Ancient Monuments of the Mississippi Valley, by Squier and Davis. Before its publication was undertaken, however, it was submitted to the Ethnological Society. Mr. Gallatin returned it, with the approval of the society, and some words of commendation of his own addressed to Professor Henry, the learned superintendent of the Smithsonian Institution. The period of temporary political repose, which followed the peace of Vienna and the establishment of the balance of power by the allied sovereigns, was an era in human knowledge. Science made rapid progress, and in its turn showed the broad and liberal influence of the great revolution. In 1842 societies were founded in Paris and London to promote the study of ethnology. Mr. Gallatin would not be behindhand in this important work for which America offered a virgin field. Drawing about him a number of gentlemen of similar tastes with his own, he founded in New York, in 1842, the American Ethnological Society. Among his associates were Dr. Robinson, the famous explorer of Palestine, Schoolcraft, Bartlett, and Professor Turner, noted for their researches in the history and languages of the Indian races. Messrs. Atwater, Bradford, Hawks, Gibbs, Mayer, Dr. Morton, Pickering, Stephens, Ewbank, and Squier were also, either in the beginning or soon after, members of this select and learned institution, of which Mr. Gallatin was the central figure. One of its members said in 1871, 'Mr. Gallatin's house was the true seat of the society, and Mr. Gallatin himself its controlling spirit. His name gave it character, and from his purse mainly was defrayed the cost of the two volumes of the "Transactions" which constitute about the only claim the society possesses to the respect of the scientific world.' To the first of these volumes, published in 1845, Mr. Gallatin contributed an "Essay on the semi-civilized nations of Mexico and Central America, embracing elaborate notes on their languages, numeration, calendars, history, and chronology, and an inquiry into the probable origin of their semi-civilization." In this he included all existing certain knowledge of the languages, history, astronomy, and progress in art of these peoples. A copy of this work he sent to General Scott, then in the city