This chemist discovered several elements, including magnesium, & also invented a miner's safety lamp
.... Magnesium metal 
crystals ... salts and discovered several new metals, including sodium and 
potassium,... [DOC] [TLE] Humphry Davy | Chemical Heritage Foundation [PAR] Sep 11, 2015 ... A self-taught chemist and inventor, Davy became a leader in Lavoisier's reformed 
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