Show new sun proof glass to keep out the sun rays that fade cloth in manufacturing scientists have developed a new glass by adding ferric oxides to melted glass the glass containing ferrous oxides has beon been developed which will exclude 90 per cent of the suns heat producing rays that cause reactions on drugs and chemicals during manufacture the glasses have been used in railroad passenger car wini win i dows to cut down the heat and shut out sunburn rays A dehydrated air space between the treated glass and a safety pane prevents fogging 0 and allows for a clear view |