See 4plusplus

Russell
Carbon fulfills the plan of the Creator in His desire to create but one form: the cube-sphere. Carbon alone crystallizes in true cube, with all of the qualities of the true cube and sphere fully exemplified. All other elements which crystallize as cubes are octave extensions of carbon. All such extensions occupy the four-zero-four position of wave amplitude.

In carbon are all of the elements of its previous stages, just as in man are all of the actions and reactions of his previous stages. Hydrogen is a one octave younger prototype of carbon. It forms on the wave amplitude at four-zero-four just as carbon forms at four-zero-four one octave ahead. In hydrogen is a whole octave of elemental tones. Several of these have been recently discovered and wrongly named isotopes. Isotopes are split tones such as those which a violinist could produce between full tones. [Walter Russell, The Secret of Light, pages 263-266]