"Thus may it now be simply stated that all periodicities of all motion of whatever nature, with two exceptions, may be built up on the following extremely simple formula: The two exceptions to this octave periodicity are mass, and tone. Mass means weight. Tone means sound. Mass accumulates all down the entire ten octaves; tone lowers from the highest note down the cosmic keyboard to the lowest. [Russell, The Universal One; Book 01 - Chapter 15 - The Formula of the Locked Potentials.]
See Also
Cosmic clock
Cosmic Forces
Cosmic harp
Cosmic Kaleidoscope
Figure 12.05 - Russells Cosmic Clock
Ramsay - PLATE III - The Keyboard and the Chords of Harmony
Ramsay - The Chromatic Chord and the Keyboard
Scale of the Forces in Octaves