Show curious mccovery Ma covery of iture bletl lleta ln the rather curious discovery lion has recently bently beep been made that in common alluvial clay used in germany for brick milking making some of tile rarest rat cat metals made occur among th thae se is cerium anti and yttrium th the ii biml aiato at effect is in to render the bricks of a bright flesh or yellow color hitherto therlo bi hi supposed to be duo due to the presence of iron it is probable that large of tile the oxides of tile the above metah will II 11 through tills discovery bo rendered available in the arts arta scientific journal |