Francis Picabia, Man Ray, and Erik Satie each contributed to a page of Picabia's magazine 391, published in June 1924. Picabia contributed a drawing, Satie a polemical writing, and Man Ray a seemingly abstract poem. Metamorphosis and interpretative simultaneity are both subjects and devices of this three-part collaborative effort. The page involves multiple levels of deliberate codification involving interrelated references to the Arensberg Circle, Satie's ballet Mercure, Renaissance art of Raphael and Albrecht Dürer, the Morse code, as well as dadaist and futuristic poetics. The mutative quality of possible interpretations suggests that the page is meant to be understood through multiple, even divergent and simultaneous, readings. The resulting interpretative flux recalls Picabia's own multi-layered approach to painting, which may serve as a model for understanding the operations of this 391 page. (Author abstract)