Hughes
In the same way are written the two last primaries of a series of twelve, which began with C. A higher series of twelve follows, and the first two primaries of a still higher series of twelve. The secondaries are written below the primaries. [Harmonies of Tones and Colours, Combinations of dissonance, rests, page 24]
In any series of twelve, the primaries of the two first key-notes repeat the secondaries of the two last of a lower series of twelve; and the two last secondaries of the twelve in development are sounded as the two first primaries of a higher series of twelve. The three series are thus linked into each other. [Harmonies of Tones and Colours, Combinations of dissonance, rests, page 24]
This diagram shews the two last minor primaries of a series of 12, with the 12 of a higher series, and the two first of a series higher still. As in the diagram of the Major, the secondaries are written below the primaries, and the sharps or flats of each harmony are written to their respective notes. With the exception that one of the primaries rises a tone higher, it will be observed that in the same way the notes of each minor primary are identical with the secondaries of each third harmony below, but in a different order; and the double tones are altered sharp or flat, as before. [Harmonies of Tones and Colours, Diagram Shews the Two Last Primaries, page 34e]
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