3673.     ---------------.  [WEVER, F.]  [Thermodynamics of the Transformations of Iron.]  Mitt. Kaiser Wilhelm Inst. Eisenforsch, Düsseldorf, vol. 9, 1927, pp. 151-155; Chem. Abs., vol. 21, 1927, p. 2245.

        Discussion of polymorphic and phase transformations.  Th A₃ and A₄ transformations of Fe are clearly both polymorphic and phase transformations, whereas the magnetic A₂ transformation comes under neither class.