Projection
Zodiacal correspondence (Pernety, 1758): Pisces ♓
Projection is the culminating operation in which a small quantity of the finished Stone or 'powder of projection' was cast upon a molten base metal in order, it was claimed, to transmute it into gold or silver. It is the final gate, the moment toward which the entire work was directed. Pernety assigns it to Pisces, the last sign of the zodiac, and Ripley made it his twelfth gate. This site reports projection as the historical goal claimed by practitioners; it endorses no claim that transmutation ever succeeded.
See also the concept page: Projection
Historical Development
Projection is the climactic act of the work: casting a minute portion of the Stone onto a large mass of molten base metal in the expectation of transmuting it. Its position as the twelfth and final stage mirrors Pisces as the final sign, the completion of the cycle, and gives the whole sequence a satisfying narrative shape from first calcination to final projection.
Pernety keys projection to Pisces; Ripley made it the twelfth and last of his gates. The two schemes agree on the endpoint even though they differ in the middle, suggesting that the broad arc of the work (open the body, purify, unite, perfect, increase, project) was more stable than the exact list of operations.
Textual Tradition
Accounts of projection recur across the late-medieval and early-modern corpus and in the many transmutation narratives of the period, including the widely reported demonstrations that circulated in print and at court. Such narratives are gathered and contextualized in Stanton Linden's anthology.
Modern Scholarship
Historians such as Lawrence Principe analyze transmutation narratives critically, as period testimony shaped by patronage, credibility and rhetoric, while Tara Nummedal situates them within the economic and legal world of the courts. Following that scholarship, this portal documents projection as a historical claim and goal, never as an achieved fact.