Note 270 — Chapter XVIII · (XXXII.)

It is somewhat remarkable that the Venetians, who practised the art of glass mosaic from about the ninth century, and in the thirteenth began their famous glass works, never achieved anything in the technique of the stained glass window. Venetian glass vessels, like the glorious lamps from the Cairo Mosques, owe much of their beauty to the fact that the material is not clarified but possesses a beautiful warm tone. It is indeed more difficult to get clear glass than tinted.