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Cohobation

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Title: Cohobation  
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Subject: Alchemy, Frater Albertus, Digestion (alchemy), Hermetic Definitions, Hermetic Journal
Collection: Alchemical Processes, Chemical Processes, Distillation
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Cohobation

In pre-modern chemistry and alchemy, cohobation was the process of repeated distillation of the same matter, with the liquid drawn from it; that liquid being poured again and again upon the matter left at the bottom of the vessel.

Cohobation is a kind of circulation, only differing from it in this, that the liquid is drawn off in cohobation, as in common distillation, and thrown back again; whereas in circulation, it rises and falls in the same vessel, without ever being drawn out.

References

  •  This article incorporates text from a publication now in the public domain
  • This article incorporates text from a publication now in the public domain:
  • "Cohobate"; "Cohobation". Oxford English Dictionary. Oxford University Press. 2nd ed. 1989.
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