The ethnographic and aristocratic era in the art of dancing has reached the climax of æsthetic development. We are entering the era of cosmic art. We begin it with the same primitive steps that our ancestors made so many centuries ago; only with this difference--that now we view the problem from a universal point of view while our forefathers beheld it from a nationalistic and aristocratic point of view. We are in the cosmic current of evolution and begin our circle where it was left by those who had passed the current of a certain race or class. The future dance will grasp beauty from a broader stretch and deeper depths than the greatest virtuosi of the past and present could do. The fundamental law of all spiritual as well as physical evolution is to bring about a better equilibrium between the individual and the universal powers. LITERATURE FOR VOLUME X _In English_ S. A. BARRETT: The Dream Dance of the Chippewa and Menominee Indians (Milwaukee, Wis., 1911). CAROLINE AND CHARLES CAFFIN: Dancing and Dancers of To-day (New York, 1912). HAVELOCK ELLIS: The Philosophy of Dancing (Atlantic Monthly, Boston, April, 1914). J. E. CRAWFORD FLITCH: Modern Dancing and Dancers (London, 1912). MARCELLA A. HINCKS: The Japanese Dance (London, 1910). A. HOLT: How to Dance the Revived Ancient Dances (London, 1907). TROY AND MARGARET WEST KINNEY: The Dance (New York, 1914). CECIL J. SHARPE AND HERBERT C. MACILWAINE: The Morris Book (London, 1910). G. VUILLIER: A History of Dancing (New York, 1898). _In German_ W. ANGERSTEIN: Volkstänze im deutschen Mittelalter (Berlin, 1868). F. M. BOEHME: Geschichte des Tanzes in Deutschland (Leipzig, 1886). HANS BRANDENBURG: Der Moderne Tanz (Munich, 1913). ÉMILE JACQUES-DALCROZE: Der Eurythmus (Dresden, 1913). H. FLACH: Der Tanz bei den Griechen (Berlin, 1880). G. FUCHS: Der Tanz (Stuttgart, 1906). G. MOHR: Die deutschen Volkstänze (Leipzig, 1874). HEINZ SCHNABEL: Kordax: Archeologische Studien (Munich, 1910). R. VOSS: Der Tanz und seine Geschichte (Erfurt). _In French_ CASTIL-BLAZE: Histoire littéraire, musicale, choréographique, etc. (Paris, 1847). AUGUSTE EHRHARD: Une vie de danseuse: Fanny Elssler (Paris, 1909). MAURICE EMMANUEL: La danse grecque antique (Paris, 1896). J. G. NOVERRE: Lettres sur les arts imitateurs en général (Paris, 1907). _In Italian_ G. B. DUFORT: Trattato del ballo nobile (Naples, 1728). _In Russian_ Bulletins of the Russian Imperial Ballet School (Petrograd, 1900–1914). CÉSAR CUI: Istoria Russkoi Musyki (Petrograd, 1903). S. HUDAKOV: Istoria Tanzev, 2 vols. (Petrograd, 1914). N. RIMSKY-KORSAKOFF: Memoirs (Petrograd, 1910). PRINCE S. VOLKHONSKY: The Ballet (Petrograd, 1913). _In Danish_ Bulletins of the Danish National Theatre (Copenhagen, 1910–14). TOBIAS NORLIND: Svardsdans ock Bagdans (Copenhagen, 1911). _In Finnish and Esthonian_