Antimony
From London's Ghost Acres
Antimony
A Compendium of Domestic Medicine, 1865
Mentioned in the form of tartarised antimony (tartar emetic). Tartar emetic and Butter of Antimony classified as Mineral Poisons (199)
antimonial powder: a powder consisting of one part oxide of antimony and two parts phosphate of calcium that has been used as a diaphoretic, emetic, and cathartic —called also James's powder (http://www.merriam-webster.com/dictionary/antimonial%20powder)
Given for a few of childhood diseases