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To the five senses at present the property of mankind two more on this globe are to be added. The sixth sense is the psychic sense of colour. The seventh is that of spiritual sound. In the second instruction, the corrected rates of vibration for the seven primary colours and their modulations are given. Inspecting these, it appears that each colour differs from the proceeding one by a step of 42, or 6 × 7.

Carrying the process backward, and subtracting 42, we find that the first or ground colour is green, for this globe.

The second and fourth octaves would be heat and actinic rays, and are invisible to our present perception.

The seventh sense is that of spiritual sound; and, since the vibrations of the sixth progress by steps of 6 × 7, those of the seventh progress by steps of 7 × 7. This is their table:

The fifth sense is in our possession: it is possibly that of geometrical form, and its steps of progression would be 5 × 7, or 35.

The fourth sense is that of physical hearing, music, and its progressions are 28, or 4 × 7. The truth of this is demonstrated by the fact that it is in accord with the theories of Science as to the vibrations of musical notes. Our scale is as follows:

—, 28, 56, 84, 112, 140, 168, 196, 224, 252, 280, 308, 336, 364, 392, 420, 448, 476, 504, 532, 560, 588, 616, 644, 672, 700.

According to musical science, the notes C, E, G, are as 4, 5, 6, in their ratios of vibrations. The same ratio obtains between the notes of the triplet G, B, D, and F, A, C.