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Harper's Encyclopedia of United States History (ed. Benson Lossing), Metric system, (search)
United States signal service, and United States census: Decimal system of money adopted by the United States Congress, with the dollar as a unitJuly 6, 1785 John Quincy Adams, United States Secretary of State, makes an elaborate report on the metric system to CongressFeb. 23, 1821 By legislation of July 4, 1837, the use of the system in France is enforced, to take effectJan. 1, 1840 International Decimal Association formed1855 Canada adopts the decimal currency used in United StatesJan. 1, 1858 Metric weight of 5 grammes (77.16 grains) and diameter of 2 centimetres given to the 5-cent copper nickel piece in the United States by act of CongressMay 16, 1866 Use in the United States authorized by act of Congress, and table of equivalents approvedJuly 28, 1866 Convention establishing an international bureau of weights and measures signed at Paris by representatives of Austria, Germany, Russia, Italy, Spain, Portugal, Turkey, Switzerland, Belgium, Sweden, Denmark, United States, A