The work which established the scientific reputation of Swedenborg was published, in 1734, in three massive folios, at the expense of Duke Ludvig Rudolph of Brunswick. The second and third volumes describe the best methods employed in Europe and America in the manufacture of iron, copper and brass. The first volume contains a philosophical explanation of the elementary world which has aroused admiration as a beautiful, daring and consistent creation of human genius, worthy of being placed side by side with the works of Newton, and replete with remarkable ideas and anticipations of later discoveries. Swedenborg indicated the existence of the seventh planet forty years before Uranus was discovered by Herschel. He was the first to form an idea of the development of nebulæ from chaotic masses to concrete heavenly bodies, a hypothesis later perfected by Herschel, and the first to offer the theory, later developed by Buffon, Kant and La Place, of the solar origin of the planets and their satellites. As in astronomy, so also in physics and geology he preconceived great discoveries. His experiments and theories in physics have been confirmed by the discoveries of the polarity of light and the galvanometer and its magnetic properties. Swedenborg discovered before anybody else the great importance of magnetism and the fact that magnetism and electricity are manifestations of the same power. He made observations concerning air and water which have been confirmed as to their correctness by Priestley, Cavendish and Lavoisier, who long were supposed to have been the first discoverers. In geology, he was the first to demonstrate that the Scandinavian peninsula, except the southern part of Scania, was a rising continent, proving the earlier level of the sea to have been much higher and the inland lakes to have stood in connection with the sea. Through his remarks on bowlders, he gave rise to the later theories of Berzelius and Sæfstrom of a bowlder period. Upon these researches followed great and remarkable works of anatomy, which, by later anatomists of the first rank, have been declared to be classics in the literature of physiology. His immense work, “Arcana Cœlestia,” and other theosophical writings which he has placed as a foundation for the New Church, and on which his present fame rests, were not so celebrated in his days as his scientific works. Like the latter, they were all written in Latin. The new religion, founded by Swedenborg, more spiritual than the old, has proved equally attractive to the individual and idealistic thinkers of all sects, Protestants and Catholics, Unitarians and Theosophists. Swedenborg made no attempt to establish a sect, and the New Church as an organization is the result of a movement which was started after his death.