From left: Max Ernst. Bird-Head (Oiseau-tête). 1935–35. Bronze, 20 5/8 x 15 x 10 3/8" (52.4 x 38 x 27.3 cm). The Museum of Modern Art, New York. Acquired through the James Thrall Soby Bequest. © 2018 Artists Rights Society (ARS), New York/ADAGP, Paris; Composite image of four X-rays of Bird-Head, taken at 200kV, 4.5mA for three minutes Part 1 of this series examined four Max Ernst bronzes that wer
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