Limojon de Saint-Didier
"They will see in the Practice of the Work, who parabolical Rivulets, who confounding themselves secretly together, give Birth to the mysterious Triangular Stone, which is the Foundation of the Art.
They will see a secret and natural Fire, of which the Spirit penetrating the Stone, sublimes it in Vapours, who condense themselves in the Vessel.
They will see what Efficacy the sublimed Stone receives of the Sun and Moon, who are its Father and Mother, of whom it inherits presently its first Crown of Perfection.
They will see in the Continuation of the Practice or in the Progress of the Work, that the Art gives to this Divine Liquor a double Crown of Perfection, by the Conversion of Elements, and by the Extraction and the Depuration of the Principles, by which it becomes to be that mysterious Rod of Mercury, which operates or performs such surprising Metamorphosings.
They will see that this same Mercury, as a Phoenix, who takes a new Birth in the Fire, arrives by the Magistery to the last Perfection of the fixed Sulphur of the Philosophers, which gives it a foreign Power over the three Genders or Reigns of Nature; of which the three-fold Crown (upon which is set for this Purpose the Hieroglyphic Figure of the World) is the most material or essential Character." [Der hermetische Triumph oder der siegende philosophische Stein, c. 1765 by Limojon de Saint-Didier, Alexandre Toussaint de]