Stained Glass Work: A text-book for students and workers in glass

"You are to know that stained glass means pieces of coloured glasses put together with strips of lead into the form of windows; not a picture painted on glass with coloured paints.

You know that a beer bottle is blackish, a hock bottle orange-brown, a soda-water bottle greenish-white—these are the colours of the whole substance of which they are respectively made."