On the Equilibrium between Radiation and Matter.

9 S. J. Barnett, Physic. Rev., 25, 835, 1925. 10 This can, for instance, be seen from Darwin's Lagrangian and Hamiltonian functions for atoms in magnetic fields, Phil. Mag., 39, 537, 1920. 11 P. Tartakowsky, Zeits. f. Physik, 34, 216, 1925. 12 P. Debye, Physic. Rev., 25, 586A, 1925. 13 A. Pascal, numerous references listed in Jahr. d. Rad. and Elektr., 17, 184, 1920. 14 The value e = 1.0000693 for He is that obtained by Herzfeld and Wolf, Ann. d. Physik, 76, 71 and 567, 1925, by extrapolating refractive indices to infinite wave-length, and is probably more accurate than direct determinations. The value e = 1.000273 for H2 is that obtained directly by Tangl. This value apparently is for 0°C. rather than 200C., contrary to the statement in the Landolt-Bornstein tables (5th ed., p. 1041) and so is in good agreement with dispersion data. 16 If the field were strong enough for spacial quantization, the values of Z obtained from diamagnetism with the old quantum theory would be 1.14 and 0.78 instead of 0.93 and 0.64. We suppose the electric but not the magnetic field adequate for spacial quantization in the old theory. 16 Wills and Hector, Physic. Rev., 23, 209, 1926; Hector, Ibid., 24, 418. 17 Son6, Phil. Mag., 39, 305, 1920. 18 E. Lehrer, Ann. Physik, 81, 229, 1926. 19 C. W. Hammar, Proc. Nat. Acad. Sci., 12, 594 and 597, 1926. 20 J. H. Jones, Proc. Roy. Soc., 105A, 650, 1924.