91.     ASHWORTH, J. R.  Simple Characteristic Relationships Among the Ferromagnetics.  Nature, vol. 116, 1925, p. 397; Chem. Abs., vol. 20, 1926, p. 2781.

                Ratio of the critical temperature (?° abs.) to the maximum intensity of magnetization (I_?) for Fe, Co, Ni, and magnetite is, respectively, 0.58, 0.95, 1.19, and 1.83, or 2 x 8/27, 3 x 8/27, 4 x 8/27, and 6 x 8/27.  Heusler’s alloy fits this scale, the ratio ? I_? being 1.50 or 5 x 8/27.  The 2 to 6 are exactly integral within the accuracy with which ? and I_? are known.  The ration of I_? for Fe to I_? for Ni, and that of the values for Co and magnetite, are both 3.3, the respective ratios of the critical temperatures being 1.60 and 1.67.