3621. ---------------. [WEDEKIND, E., AND ALBRECHT., W. H.] [Distinguishing the Different Types of Ferric Oxides and Hydrated Oxides by Their Different Magnetic Properties. II.] Ber. deut. chem. Gesell., vol. 60, 1927, pp. 2239-2243; Chem. Abs., vol.

3621. ---------------. [WEDEKIND, E., AND ALBRECHT., W. H.] [Distinguishing the Different Types of Ferric Oxides and Hydrated Oxides by Their Different Magnetic Properties. II.] Ber. deut. chem. Gesell., vol. 60, 1927, pp. 2239-2243; Chem. Abs., vol. 22, 1928, p. 3090.