The Long-continued Action of Water on Window-glass: Weathering of the Mediaeval Glass of Weoley Castle, Birmingham

JSGT 1955 V39 T128-T133

The effects of the weathering of ancient glass have often been described; but the author's study of the subject in 1934 by the geologists' method of preparing rock-slices, a method perhaps never before used for weathered glass, has exhibited effects not previously so well seen, and has suggested a new theory of origin of some of the structures displayed.

Frank Raw