6 FLAMEPROOF, WATERPROOF, MILDEW RESISTING MATERIAL INTENDED TO BE APPLIED AS A COATING TO COTTON, WOOL, WORSTED, RAYON, SILK, HEMP, JUTE, SISAL, AND OTHER CELLULOSIC AND FIBROUS MATERIALS AS A PROTECTION AGAINST THE DESTRUCTIVE ACTION OF FIRE, WATER, AND MILDEW ON THESE MATERIALS