CHAPTER XVII.

DIAGRAM XIV.—THE MODULATING GAMUT OF THE TWELVE MINOR KEYS BY FIFTHS IN MUSICAL CLEF, AND THE SAME VEERING ROUND THROUGH TWELVE OCTAVES: THE THREE HARMONIES SOUNDED BY EACH KEY FOLLOWING IN SUCCESSION THROUGH THE TWELVE KEYS THAT ARE MINGLED AND EVER DEVELOPING.

"There's not the smallest orb which thou behold'st,

But in his motion like an angel sings,

Still quiring to the young-eyed cherubim."—Shakespeare.