Publisher's Synopsis
Excerpt from Observations sur la Physique, sur l'Histoire Naturelle Et sur les Arts, Vol. 6: Avec des Planches en Taille-Douce, D�di�es A Mgr. Le Comte d'Artois
Quatrieme Exp�rience. Fil de fer pefant 6 livres 14 onces foute mnt un poids de 50 livres fut mis en �quilibre livres 15 onces 1, exc�s d'une once du ids inf�rieur fur eur.
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