Units of measurement in France before the French Revolution 4 parts in one million) than the "pied" used in France. According to the law of 19 Frimaire An VIII (December 10, 1799), Traditionally, the French pound ("livre") was defined as the mass of exactly of a French cubic foot of water. When the kilogram was defined, the knowledge that a "pied du Roi cube" filled with water masses exactly 70 French pounds was apparently lost. According to the traditional (cubic foot) definition, one "livre" would have been about 489.675 grams. According to the kilogramme definition, one "livre" was about 489.506 grammes. The difference is about 0.035%. However, a small
African pied wagtail the genus containing all but the forest wagtail of Asia, is from the Latin for a “little mover” while the specific name "aguimp" from the French for “with a wimple” which refers to the black hood of the African pied wagtail. Among the wagtails the African pied wagtail is most similar in appearance to the recently discovered Mekong wagtail but genetic evidence suggests that the two are each other's closest relatives and are each just as related to other black and white wagtails such as the white wagtail "M. alba" complex or the white-browed wagtail "M. maderaspatensis". There are currently