Show e glass class according to rec c it t reports a bohem af r 13 years ot of research has ed in producing unbreakable slats it a recent demonstration on it is sal plates and ves FIS fels F IS of tile the manerl mii teri remained whole when thrown to p ground from a height ot of 12 feet j meat eat was roasted un on a thin gin las plat pie oer 0 er an open fire tit at a tempera ra ft f degrees F tin was melted ire a glass pot and nalls nails were drivell io a piece of hardwood using a piece f glass tor for a hammer popular magazine |