Key points are not available for this paper at this time.
The Bacher and Gouds ll1i t t heor y expresses the energy of a state of an atom in t erms ?f a lineal: combination of energies of states of other ions of t h e same ato m. T his t heor y IS tested 111 the sp ectra II'lth da nd s-electron s a nd general conclusion s drawn abo ut its accul"ft.cy . .
R. E. Trees (Thu,) studied this question.