Calcination and Reverberation · Lexicon

From the book

Heinrich Khunrath’s Magnesia Catholica Philosophorum

Heinrich Khunrath · Diotimos Editions · 2026

Orientation

At a Glance

The wordCalcination and reverberation are named laboratory operations associated here with the preparation of metallic powders and salts.
In KhunrathThe catalogue on pages 67–682 includes calcinations and reverberations after the initial breaking-up and treatment of metals.
In this editionThe technical terms are retained rather than expanded into a reconstructed heating method.
A reading distinctionThe repeated catalogue at pages 90–912 is part of the opponent’s challenge and Khunrath’s answer, not a newly supplied process.

Meaning

Calcination and reverberation are named laboratory operations associated here with the preparation of metallic powders and salts. The treatise uses their established technical vocabulary without supplying a procedural definition. Their importance is that Khunrath both acknowledges them as real work and refuses to let their performance prove that first matter has been obtained.

Use in the book

The catalogue on pages 67–682 includes calcinations and reverberations after the initial breaking-up and treatment of metals. Their products proceed into further preparations and extracts. Page 70 grants the overall family of preparations medicinal value, yet denies its sufficiency for the first matter of silver and gold. The operation names therefore appear inside a concession followed by a doctrinal limit.

Pages 90–912 repeat the catalogue when answering the claim that the Art must lie in metals. Khunrath grants that metals can be prepared in many forms, including calcined and reverberated products. What he then requires is not a refusal of all that prior labour but regeneration through the appropriate catholic ground. The same preparation may be preliminary to a permitted work without being independently its foundation.

Page 125 returns to the terms in the salt controversy. Laborants imagine that prolonged calcining and reverberating of silver or gold, followed by their further treatment, can yield the salt named by the Philosophers. Khunrath grants medicinal products but denies that the proverb identifies those products as the Stone. Duration and elaboration do not remove the central question of the matter’s status.

Calcining also opens the ten-operation list on page 160, now in the positive argument that raw matter cannot already perform what rightly prepared matter alone is said to do. That occurrence prevents a categorical claim that calcination is always a false operation. As with dissolution and fixation, its legitimacy cannot be settled by the verb alone; one must know the subject, purpose and stage within the argument.

Places to read

1599 p. 67Calcination and reverberation appear in the acknowledged metallic preparation catalogue.
1599 p. 70The catalogue’s products are medicinally praised but denied first-matter status.
1599 p. 90Calcining begins at the page end in the repeated preparatory list.
1599 p. 91Reverberating continues the list before the requirement of regeneration is stated.
1599 p. 125Prolonged calcining and reverberating figure in a mistaken interpretation of metallic salt.
1599 p. 160Calcining is included among the preparations needed for the wonder-working Stone.

Translation in this edition

The technical terms are retained rather than expanded into a reconstructed heating method. Page 160 lists calcining but does not repeat reverberation; the earlier catalogue supplies their pairing. The text does not support making every named operation a mandatory separately timed step of one universal recipe.

Source note

The repeated catalogue at pages 90–912 is part of the opponent’s challenge and Khunrath’s answer, not a newly supplied process. Reading its conditional syntax prevents the list from becoming an unconditional instruction.