Archidoxa ex Theophrastia : Pars I (1570) - Page 20

Book One: On the Mysteries of the Microcosm original: Microcosmi; literally the "little world," referring to the human body as a reflection of the entire universe..
Book Two: On the Mysteries of the Elements original: Elementorum; the fundamental building blocks of nature—Earth, Water, Air, and Fire..
Book Three: On the Mysteries of the Fifth Essence original: Quintæ Essenciæ; also known as the Quintessence, the pure, spiritualized core of a substance extracted through alchemy..
Book Four: On the Mysteries of the Arcanum original: Arcani; a hidden, potent medicinal power or "secret" found in natural substances..
Book Five: On the Mysteries of Extractions original: Extractionum; the chemical process of drawing out the essential medicinal parts of a plant or mineral..
Book Six: On the Mysteries of Specifics original: Specificorum; medicines that have a particular, targeted effect on a specific disease or organ..
Book Seven: On the Mysteries of Elixirs original: Elixir; potent medicinal preparations intended to restore health or prolong life..
Book Eight: On the Mysteries of External Things original: Externis; referring to medicines applied to the outside of the body..
Book Nine: On Practice original: Praxi; the actual application of these alchemical theories in medicine.: but it is not written.

Or rather, it is not printed. original: Al’ non est impressus; the note clarifies that while the ninth book might have been written by the author, it was not included in this specific printed volume.