Pewter which is commonly called etain in France, and generally confounded there with true tin, is a compound metal, the basis of which is tin. The best sort consists of tin, alloyed with about a twentieth or less of copper, or other metallic bodies, as the experience of the workmen has shown to be the most conducive to the improvement of its hardness and colour, such as lead, zinc, bismuth, and antimony. There are three sorts of pewter, distinguished by the names of plate, trifle, and ley-pewter. The first was formerly much used for plates and dishes; of the second are made the pints, quarts, and other measures of beer; and of the ley-pewter, wine measures, and large vessels. The best sorts of pewter consist of 17 parts of antimony to 100 parts of tin; but the French add a little copper to this kind of pewter. A very fine silver-looking metal is composed of 100 pounds of tin, 8 of antimony, one of bismuth, and four of copper. On the contrary, the ley-pewter, by comparing its specific gravity with those of the mixture of tin and lead, must contain more than a fifth part of its weight of lead.