2151.     LUYKEN, W., AND KRAEBER, L.  [Magnetic Properties of Natural and Artificial Iron-Oxygen Compounds.  I.  Magnetic Measurements on Powdered Specimens.]  Mitt. Kaiser-Wilhelm Inst. Eisenforsch, Düsseldorf, vol. 16, 1934, pp. 169-178; Chem. Abs., vol. 29, 1935, p. 434.

        Method was developed for measuring paramagnetic and ferromagnetic substances in the form of powder, and its application in the determination of magnetic properties of Fe-O compounds is described.  Magnetization curves of different material.