Thefe metals have been fometimes taken in exchange by weight, in the ihape of ornaments for the neck, the arms, the ears, or the ankles; fometimes in the rude form of duf't, bars, or ingots; fometimes {tamped with the mark of kings, govern ments, or cities. Perhaps the earliei't recorded mark of this kind was the rude image of a Iheep or an ox, the metal being called in Latin from that image petunia, from peenr.