POTTERY IN ARCHITECTURE. 442 is beginning to extend in France, in which country they made their first appearance only about ten years ago. Besides their variety of colour, they have the advantage of very great dura- bility. They may be of geometrical pattern (Fig. 8x8) or dis- play concentric… … Fig. 819. Fig. 820. Figs. 817 to 820. — Stoneware Mosaics (De Smet et Cie.). Geometrical mosaics are formed of little cubes of different colours, which are made by special machines ; the others are executed from fragments of different dimensions and shapes obtained by breaking plain stoneware…