Word: potassium
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Dates: during 1920-1929
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...after taking his leave of Secretary of the Navy Wilbur; after testing and christening and testing again his triple-engined Fokker monoplane, the Josephine Ford (in honor of a 3-year-old daughter of a financial backer, Edsel Ford); after laying in 200 smoke bombs and a supply of potassium permanganate (purple when moistened) to be used as targets for his drift-indicator (compass) when flying over snowfields; after discussing landing-skis with a Canadian expert and buying a second extra set, larger than any, for the Josephine, as well as a small set for her tail; after explaining into...
...would further aid his navigators by having them drop, as they fly, minims of potassium permanganete upon the ice-floes. The purple stains moisture would make of these droppings would be readily visible trailblazers from quite a height, providing no snow fell...
Increase of 1½c to 2¼c on potassium chlorate (TIME...
...President Coolidge, by proclamation following the unanimous recommendation of the Tariff Commission, and in accordance with his power under the "flexible" provision of the Tariff Act, increased the duty on potassium chlorate from 1? to 2½ ? a pound (an increase of 50%, the maximum permitted...
...world is short of bromine, Is this important? Yes, if photography, especially moving pictures, are important. Bromides of silver and potassium are essential to their welfare. Yes, if ethyl motor fluids are important; if certain medical sedatives are important. The world is short of bromine, and the chief sources?salt deposits in Prussian Saxony, brines in Michigan, Ohio, Pennsylvania, West Virginia and Chile ?do not bid fair to replenish the supply...