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...me "supplements" (3rd–6th) or undergone drastic re-organizations (15th). In recent years, digital versions of the ''Britannica'' have been developed, b ...[[Cyclopaedia, or Universal Dictionary of Arts and Sciences|Cyclopedia]]'' in 1728, which went through multiple editions and awakened publishers to the e

...is Nicolas Vauquelin]] in the mineral [[crocoite]] (''[[lead chromate]]'') in 1797. Crocoite was used as a pigment, and after the discovery that the mine ...lete removal from the diet has caused [[chromium deficiency]]. It is toxic in larger amounts. [[Hexavalent chromium]] (Cr(VI)) is toxic and [[carcinogeni