21 St. 1 Min, 1 Jan 1774 Jahr - Joseph Priestly- 1774 isolated and discovered “Oxygen” but called it dephlogisticated air. Due to an illness, he developed in his younger years he was left with a stutter for the rest of his life.
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21 St. 1 Min, 1 Jan 1774 Jahr
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~ 250 years ago
