John Dalton (1766-1844) English chemist and schoolmaster. Described colour blindness (Daltonism) from which both he and his brother suffered. Engraving.

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Photo credit: © World History Archive / Alamy / Afripics
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Keywords: 1766-1844, archival, archive, british, brother, chemist, dalton, english, engraving., historical, history, john, scientist, spectacles, suffered.