The known octaves which lie within the range of perception are five and one half. These begin with the third, or hydrogen octave, and end with the uranium group which are isotopes of actinium and tomium in the last octave.
The invisible octaves of finely divided matter of space are three and one half in number. These octaves are beyond our range of perception, but they are not beyond our knowing.
Light is the universal language. Through spectrum analysis of light waves man has been able to analyze and recognize each element when in its incandescent stage.
By means of the spectroscope, he has been enabled to divide light rays through its prisms into the component parts which make up the life history of each stage of its two-way cycle.
Each element tells the story of its entire previous "incarnations" in other octaves, since its beginning. Any line in one octave is repeated in the next, but shifted in position because of the changing pressures of each succeeding octave.
The spectrum of hydrogen is preponderantly red. A bright red line indicates its present octave. Other red lines tell its past history in lower octaves.
The simple history of hydrogen, as compared to the complex spectrum of iron, is like the history of an obscure youth as compared to that of Napoleon.
In the spectrum analysis of iron, the lines which belong to iron and those which tell its recent and remote history can be seen at a glance. These lines also indicate the relative ability of the iron atom to charge or discharge.
Wave length 7181.8 is immediately recognizable as belonging to iron in its present octave; 6916.8 is recent history and 6944.8 is extremely remote history. Herein follows a partial list of lines whose wave lengths belong to iron or to its immediate mid-tone associates, and also other lists indicating its recent and its more remote history.
The visible and invisible spectrum is divided into several thousand lines. Each line is different in its shade of color and in its plane. Each line proves that this universe of varying motion is a universe of varying pressures. [Walter Russell, The Secret of Light, pages 272-274]
