DiotimosReading Desk

Operations of separation

Lixiviation

Auslaugung, “leaching”; auslaugen, “leach”; Lixivium, “lye or leaching liquor”

Drawing water-soluble material from an earth, ash, or residue into a liquor.

From the book

The Golden Chain of Homer

Anonymous (traditionally attributed to Anton Joseph Kirchweger) · Diotimos Editions · 2026

Browse this book’s lexicon →

Orientation

At a Glance

  • The wordDrawing water-soluble material from an earth, ash, or residue into a liquor.
  • In the Golden ChainLeaching makes saline portions accessible while leaving another remainder whose value must still be judged.
  • Translation“Leach” renders the operative verb; lixivium names the associated liquor rather than the act alone.
  • A place to readB1C23S015, where leaching Gur helps support the claim that a vitriolic salt belongs to mineral beginnings.

Meaning

Lixiviation is leaching: a liquid takes up soluble portions from a more earthy or residual material. The source applies it to soils, ashes, Gur, and residues after heating. The liquid can then be clarified and concentrated to obtain salt. This distinguishes leaching from simply burning a subject and from the subsequent filtration that separates what the liquid carries from what it leaves behind.

The operation supplies evidence within the author's theory of saline nature, but its product depends on what was leached and how that subject had already been altered. An alkaline salt from ash, a vitriolic salt from Gur, and material recovered from decayed earth have different immediate histories. Their common participation in the saline account does not make them one chemically identical substance.

Use in the book

B1C13S001 uses the leaching of thoroughly altered animal earth as evidence that the animal kingdom can return toward a nitrous-saline condition. The author infers origin from the condition to which a subject can be reduced. That inference is central to the book, but it should remain attributed to his natural philosophy rather than be presented as an independently sufficient proof of primordial composition. B1C23S015 applies the reasoning to Gur: leaching and the subsequent operations reveal a vitriolic or aluminous saline condition according to the earth involved.

B1C19S017 states that the individual subject's alkali can be leached from its reverberated residue. B2C07S009 gives leaching a place in a route especially concerned with purity, where a subject's own phlegm can serve as the liquid medium. Thus leaching is not confined to adding an unrelated common water. Its relation to the subject's own portions can be important when the aim is an ordered reunion through homogeneous materials.

B2C05S057 and B2C05S066 identify the controversial judgment that sometimes follows successful leaching. Practitioners obtain a salt, recognize its fixity, and discard what remains as useless dregs. The author objects that the ash or earthy remainder can itself carry a still more enduring foundation, as glassmaking supposedly demonstrates. His criticism is directed at the conclusion drawn about the residue, not at the mere act of leaching. Lixiviation distinguishes materials by solubility; it does not, by itself, decide the hierarchy of their powers or justify throwing the remainder away.

Places to read

  1. Book I · Ch. 13 · §1Leached animal earth is evidence within the author’s account of return.
  2. Book I · Ch. 23 · §15Gur yields a specified vitriolic saline portion.
  3. Book I · Ch. 19 · §17The subject’s alkali is obtained from a prepared residue.
  4. Book II · Ch. 7 · §9A subject’s own phlegm can serve in leaching.
  5. Book II · Ch. 5 · §66The salt obtained does not make the remaining ash worthless.

Translation in this edition

Auslaugung and auslaugen are attested German forms. Lixivium occurs for the related liquid. “Lixiviation” is the English access-heading for that operation; it need not pretend that an identical Latin noun is printed wherever leaching is described.

The liquid's designation as lye does not establish a fixed modern composition, concentration, or universal reaction. The book distinguishes different originating subjects and prior treatments. Preserving those qualifiers also keeps leaching distinct from every dissolution of a solid by a powerful menstruum: both transfer material into liquid, but their local place in the anatomy and argument can differ.