DiotimosReading Desk

Operations instruments and practitioners

Regale

A cement used in the purification of gold.

From the book

A Chymical Dictionary

Gerhard Dorn and John French · Diotimos Editions · 2026

Browse this book’s lexicon →

Orientation

At a Glance

  • The wordA cement used in the purification of gold.
  • In the bookCompare Quartatio, an assay described at greater length, and Regulus, the pure metallic part after separation of dregs.
  • A place to readThe historical definition below, 1650 dictionary, unnumbered definition page 40; facsimile PDF page 368.

Historical definition

Regale is a cement by which gold is purified.

Meaning

Cement names a material employed in a refining operation. The definition concerns its function toward gold, rather than a building material or an adhesive. No composition is specified here.

Use in the book

Compare Quartatio, an assay described at greater length, and Regulus, the pure metallic part after separation of dregs. Their shared concern with purity does not make the processes interchangeable.

Places to read

  1. RegaleRead the complete historical definition and its commentary.
  2. QuartatioA gold assay described through the separation of silver from gold.
  3. RegulusThe purified metallic or mineral portion after separation.

Source note

Historical source. 1650 dictionary, unnumbered definition page 40; facsimile PDF page 368 — Facsimile

Sources. A Chymicall Dictionary (1650), s.v. Regale; 1650 facsimile PDF p. 368; compare Quartatio, Regulus