The temperature variation of the saturation magnetization of a &ggr;‐ferric oxide sample has been interpreted by use of Ne´el's molecular‐field model, with neglect ofA‐AandB‐Binteractions. The parameters assumed are:jof the Brillouin function=52; a net moment of 1.25 Bohr magnetons per iron atom; ratio of the number of atoms onAsites to the number onBsites, 8/(40/3)=3/5. From these parameters the functionM/M∞=G(T/&thgr;) was calculated numerically;M=magnetization at temperatureT, M∞=magnetization atT=0, &thgr;=Curie temperature. The data fit the theoretical curve very well if &thgr; is assigned the value 1020°K.