““Arsenic was used as a poison to eliminate troublesome people throughout history, but that changed in 1836 when a test was created to detect it in tissues or body fluids. This test helped prove how someone died and helped catch the killer.” ArsenicChemistryfactsForensicscienceHistoryofscienceSciencedetectivesStemeducationTruecrimescience Book:Magical Elements of the Periodic Table Presented By The Alchemical Wizards - Book 2 Source: Magical Elements of the Periodic Table Presented By The Alchemical Wizards - Book 2