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 1385.    HEDVALL, J. A., HEDIN, R., AND PERSSON, O.  [Ferromagnetic Transformation and Catalytic Activity.  II.]  Ztschr. Physik. Chem., vol. 27, B, 1934, pp. 196-208; Chem. Abs., vol. 29, 1935, p. 1314.

       Catalytic effect of Ni on the reaction N2O→N2+O is suddenly changed at the Curie point, where the amount decomposed increases rapidly.  This is another example of the theory of the change of reactivity in transitions that do not result in the change of the lattice symmetry.