Word: fluor
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...British geologists, they gave Japan a foothold on the Gulf of Mexico, a base from which to route supplies across the Mexican Isthmus bypassing the Canal. The embargo involved 700 flasks of mercury (for making explosives), 14 sacks of molybdenum (for making steel alloys), 2,000 tons of fluor spar (for making aluminum), such oddments as 1,700 tons of flour, 5,000 drums of gasoline and oil. But the scrap and certain petroleum products which were "practically Government monopolies" were held...
...have in Mexico considerable manganese ore and fluor spar, as well, two articles found in very small quantities in the United States...
...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...