an opportunity to practice the same exercises. In response to an invitation, he took charge of a similar course in Oldenburg, capital of a Grand Duchy of the same name, in 1851. He also visited many places in Hesse in the interest of physical training, and teachers from all parts of the state came to Darmstadt from time to time during the next few years to become familiar with his method. A list of foreign visitors during the period 1852–1854 listed educators from Sweden (1), Belgium (1), Switzerland (3), Austria (4), Prussia (6), Saxony (2), Württemberg (2), Baden (5), Oldenburg (4), Frankfurt am Main (8), and smaller German states. In 1852, a new indoor gym () was opened for use classes of boys and girls from various schools. It contained a hall one hundred by sixty feet which could be changed into two rooms by means of a movable partition. It was surrounded by a double Turnplatz and was the first building of the kind in Germany. Public exhibitions the next year and again in 1855 acquainted parents, teachers, the grand ducal family, and the state and city authorities with the nature of his work. In 1855, failing health compelled Spiess to interrupt his hitherto unceasing activity. Tuberculosis had developed in a lung wounded by a sword thrust during his student days as a second to a duel. Attempts to stop its progress by residence in the Taunus and for two years at Vevey, on Lake Geneva, proved unavailing. He returned to Darmstadt, visiting the Turnhaus there for the last time in the fall of 1857, and died the following year. Works Die Lehre der Turnkunst (System of Gymnastics). Basel, Schweighauser'sche Buchhandlung. In four volumes: “Das Turnen in den Freiübungen für beide Geschlechter” (Free exercises for both sexes, 1840) “Das Turnen in den Hangübungen für beide Geschlechter” (Hanging exercises for both sexes; 1842; 2nd ed., 1871) “Das Turnen in den Stemmübungen für beide Geschlechter, mit einem Anhang der Liegeübungen” (Supporting exercises for both sexes with an appendix on exercise while lying on the ground; 1843; 2nd ed., 1874) “Das Turnen in den Gemeinübungen, in einer Lehre von den Ordnungsverhältnissen bei den Gliederungen einer Mehrzahl fur beide Geschlechter” (Group exercise for both sexes, with instructions for the orderly coordination of large numbers; 1846; 2nd ed., Basel: Benno Schwabe, 1885) Turnbuch für Schulen als Anleitung fiir den Turnunterricht durch die Lehrer der