TIN-FOIL

a general name for thin plates or sheets of metal, resembling a leaf in thinne . It is used in chemistry for electrical apparatus, and by jewelers for backing gems of the le precious kind. The latter is sometimes known as ‘Dutch F.’, consisting of small sheets of small sheets of silvered copper, rolled very thin. It is coated with a mixture of isingla , and translucent color. highly polished. ‘“Tinfoil’ is the commonest kind, used for wrapping chocolate, tobacco, etc. ‘Gold-F.’ is chiefly used by dentists for filling teeth, and is thicker in substance than gold-leaf, which is employed principally for gilding purposes. Gold-leaf is prepared by a prolonged beating-out of the metal between sheets of vellum and thick skin. The leaves can be produced in ten different shades of color, according to the amount of silver or copper alloy used, and are about 3)4 in. square.