Word: fluor
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Dates: during 1920-1929
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...experiments of "natural philosophy" in makeshift laboratories. Extremely versatile, never idle, he learned all that his contemporaries knew about electricity and wrote a history of that mysterious force. By hit-or-miss methods he obtained in his retorts "marine acid air" (hydrochloric acid gas), "vitriolic acid air" (sulphur dioxide), "fluor acid air" (silicon fluoride), "alkaline air" (gaseous ammonia). One day, he tried passing electric sparks through his "alkaline air" and found that it decomposed into nitro gen and hydrogen. Then, "having a notion" that ammonia and hydrochloric acid gas, mixed, might produce a "neutral air," he obtained some...