[3] By some writers it has been claimed that the whole idea of stained-glass work was derived from cloisonné enamel; but from the fact that the glazing of windows in glass and metal had been known long before, I think the course of events I have suggested above to have been more probable.
[4] There is some at Augsburg and at Tegernsee in Bavaria which may perhaps be a little earlier, but it is not certain.
[5] It seems to have been the practice of glass-workers in the Middle Ages to describe the different colours in glass by the jewel they most nearly resembled. A survival of this at the present day is their universal habit of calling red glass "ruby."
[6] Some critics have thought the figure merely a copy from an earlier design, but I cannot agree with them.
[7] The little piece of white with yellow stain under the right toe is, of course, a fifteenth century scrap.
[8] Were it not for the difference in the source of the light one would be reminded of Kipling's lines:—
"The first are white with the heat of Hell and the second are red with pain,"
and
"... Tomlinson looked up and up, and saw against the night
The belly of a tortured star blood-red in Hellmouth light;