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Some curious Gentlemen both of Royal Society ofLondon , and of the Royal Academy of Sciences atParis , thinking it might be of good Use, for the better comparing together the Success of Experiments made inEngland and inFrance , proposed some time since, that accurate Standards of the Measures and Weights of both Nations, carefully examined, and made to agree with each other, might be laid up and preserved in the Archives both of the Royal Society here, and of the Royal Academy of Sciences atParis : Which Proposal having been received with the general Approbation of both those Bodies, they were there- upon pleased to give the necessary Directions for the bringing the same into Effect.

V. An account of the proportions of the English and French measures and weights, from the standards of the same, kept at the Royal Society