Digestion (alchemy)

In alchemy, digestion is a process in which gentle heat is applied to a substance over a period of several weeks.

This was traditionally performed by sealing a sample of the substance in a flask, and keeping the flask in fresh horse dung or sometimes in direct sunlight. Today, practitioners of alchemy use thermostat-controlled incubators.[1]

Digestion is considered one of the 12 core alchemical processes and is "ruled", or "dominated", by the zodiacal sign of Leo.

References

John Reid's Course on Practical Alchemy - II Chapter 2 (November 1, 2010)

Alchemy
Concepts	Alkahest Azoth Chrysopoeia Classical planets (Suns) Classical element Elixir of life Homunculus In art and entertainment Philosopher's stone Substances Symbols
Branches	Daoist Hindu Islamic Spagyric Iatrochemistry Chemistry
Magnum opus	Nigredo Albedo Citrinitas Rubedo
Processes	Calcination Ceration Cohobation Congelation Digestion Distillation Fermentation Filtration Fixation Multiplication Projection Solution Sublimation
Alchemists	Agastya Arthur Dee Cleopatra the Alchemist Fulcanelli Ge Hong Heinrich Cornelius Agrippa Isaac Newton Jābir ibn Hayyān John Dee Albertus Magnus Khālid ibn Yazīd Bernard of Treviso Mary the Jewess Michael Maier Dmitri Mendeleev Nicolas Flamel Ostanes Paracelsus Rhazes Robert Boyle Roger Bacon Wei Boyang Zosimos of Panopolis
Works	Alchemical Studies Atalanta Fugiens Aurora consurgens Baopuzi Bibliotheca Chemica Curiosa Buch der heiligen Dreifaltigkeit Cantilenae Intelectuales de Phoenice Redivivo Cantong qi Chymical Wedding of Christian Rosenkreutz Cyranides De Alchemia Den vises sten Deutsches Theatrum Chemicum Emerald Tablet Fasciculus Chemicus Greek Magical Papyri Hermetic Definitions Hermetic Journal Hermetica Kitab al-Kimya Leyden papyrus X Liber Ignium Musaeum Hermeticum Mutus Liber Occult Chemistry Papyrus Graecus Holmiensis Parabola Allegory Picatrix Psychology and Alchemy Rosary of the Philosophers Septimana Philosophica Splendor Solis Suspicions about the Hidden Realities of the Air The Hermetical Triumph The Mirror of Alchimy The Twelve Keys of Basil Valentine Theatrum Chemicum Theatrum Chemicum Britannicum Tripus Aureus Turba Philosophorum Treatise on the Apparitions of Spirits
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