National Geographic : 1943 Jan
From Sand to Seer and Servant of Man He Sights Glass Sheets Sidewise So You May See Clearly through Your Eyeglasses Faintest trace of "strings" or "seeds" is cause for rejection. Colors are vegetable stains for identification. e0 nanlonal ueograpmc society Kodachromes by Willard R. Culver Symphonies of Color Glow through Such Glass As Organs Play and Millions Worship For cathedrals building in Washington, D. C., New York, and Liverpool today, stained glass is blown in cylinders, just as it was for immortal windows of Chartres, York, and Canterbury. Closed ends are snipped off with hot wire, then the cylinders are cut down the sides, reheated, and flattened to sheet size.