Show METAL HAS NEW USES Beca lecause usein in some parts of africa the t air dry that the thir cove covers ro of books ard are turned back by the heat beat andzack and lack of mols moisture tuie an aluminum binding has been made for volumes subject to such conditions conditions the aluminum cover is of about the thickness kne sa ot of an ordinary dana can Is light la in weight insect proof and washable the metal is chemically treated to io take ordinary printing ink as well as enamel or patt 1 th the paper as well aa the cover is made insect proof the paper being treated with a carbonate of 0 soda solution |