The symbolic Virgin carries in her left hand a sistrum and a cymbal, or square frame of metal, which when struck gives the key-note of Nature (Fa); sometimes also an olive branch, to indicate the harmony she preserves among natural things with her regenerating power. By the processes of death and corruption she gives life to a number of creatures of diverse forms through periods of perpetual change. The cymbal is made square instead of the usual triangular shape in order to symbolize that all things are transmuted and regenerated according to the harmony of the four elements.

And the Virgin of the Wisdom of God is the Spirit of the pure Element, and is therefore called a Virgin, because it is so chaste [or pure,] and genera...