Montpellier, France/montpellier040

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The black pot holds a retort that is heated on an ethanol burner. "Eaux mères des maris salants + chlore" means concentrated "concentrated sea water from the saltworks + elemental chlorine," which was heated and distilled over. Balard produced his chlorine in the same manner as the discoverer Scheele, who reacted manganese dioxide with hydrochloric acid.