This book gives definitions by well-known artists of the various movements, or forms of art, of the period. They range from Cubism, Futurism, Expressionism, Abstract, Metaphysicians, Suprematism, Simultanism, Dadaism, Purism, Neoplasticism, Merz, Prooun, Perism, Constructivism, to Abstract Film. The definitions are followed by illustrations of examples of each movement.