Show aluminum num for paper rt ft i is stated that experiments with alu aluminum minum as a substitute for paper are arc now under way avay in france it is now possible a to roll aluminum into sheets four thousandths of an inch in thickness in which form it weighs loss than paper by the adoption of suitable mach machinery hiery these sheets can bo ba made even thinner and can he be used for books and writing paper the metal m eft al will not oxidize is practically fire an dwater and water proof andis and is tible by worms |