Show change changes in of glass in most od old gaass roofs aai a kiy perceive different tinte tint caused by the alon of the sun anil anti atmosphere changes in the wor of glass ara are caused b 05 subjecting it to the action of what lire are known ns raye rays of light 1101 Some something of the same sort iry iray be observed on high mountains where old gl from bottles brigina originally green after exposure to tho light of a great elevation in tho the of perpetual snow arow attain attal nix beautiful pala pate tint |