 Use of the following artwork is gratefully acknowledged:  Jean Cocteau, Stravinsky Playing the Rite of Spring  Pablo Picasso, Portrait of Stravinsky  Fernand Leger, The Mechanic  Francis Pacabia, The Cacodylatic Eye  © S.P.A.D.E.M., Paris/V.A.G.A., New York 1984.  Piet Mondrian, Composition #2  © Beeldrecht, Amsterdam/V.A.G.A., New York 1984.  George Grosz, Remember Uncle August the Unhappy Inventor  © Estate of George Grosz/V.A.G.A., New York 1984.  Raoul Hartmann, Dada Cino  Wassily Kandinsky, Orange