Fig. 29.—Stained Glass Window from Chartres Cathedral.
The peculiar excellence of stained glass as compared with every other sort of decoration, is that it is luminous. To some extent fresco-painting may claim a sort of brightness; mosaic when executed in polished materials possesses brilliancy; but in stained glass the light which comes streaming in through the window itself gives radiance, while the quality of the glass determines the colour, and thus we obtain a glowing, lustre of colour which can only be compared to the beauty of gems. In order properly to fill their place as decorations, stained-glass windows must be something quite different from transparent pictures, and the scenes they represent must not detach themselves too violently from the general ground. The most perfect effect is produced by such windows as those at Canterbury or Chartres (Fig. [29]), which recall a cluster of jewels rather than a picture.
Coloured Decoration.
Colour was also freely introduced by the lavish employment of coloured materials where they were to be had, and by painting the interiors with bright pigments. We meet with traces of rich colour on many parts of ancient buildings, where we should hardly dare to put it now, and we cannot doubt that painted decoration was constantly made use of with the happiest effect.
Sculpture.
