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R This initial "R" likely stands for "Rosicrucian" or "Rosae" (of the Rose), explicitly linking the contents to the secretive Brotherhood of the Rosy Cross mentioned on the preceding page.
The emblem depicted on this page—the pelican in its piety—is a profound alchemical symbol. By appearing to feed its young with blood from its own breast, the pelican represents the "nourishing" of the alchemical matter or the "Philosopher's Stone" through the dedication and sacrifice of the practitioner. The bird stands upon a cube, representing the stable, physical world (or "Salt"), which is marked with symbols of authority (crossed staffs) and the four elements (spheres), all while being illuminated by the sun of divine light.