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Show Substitutes for Glass. Materials of ninny kinds, more or less transparent, are being tried in Ktirope lo replnce window glass, which Is iinoliliiliinlile. Cellulose films are I miide practical by mourning on metnl I uniting. Ilghi wire screen, or cloth Olue Interlnceil wllh hemp strnnds between be-tween two sheets of paper: albumen nnd cnseln products; sheet gelnlin. nnd nn urllflcinl resin made by condensing phenol with a formnldehyde solution ! .ill are Imperfect btlt rendy ncikeshlfts. I More nearly resembling ghiss, hill comparatlVCl) expensive, are nil oxide . f slllcn mnde by fusing It with acid i oxides of titunlum or (fUUftim, nnd n comhluntlon of greensnnd mnrl with ! imignesiu. bniixlte. nnd nn nlknll. melt j ed In nu electric fiirmice. Some of these glnss substitutes are tlexllde. Popular Mechanic Mngnzlne. |