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2548. Diaphanie. This is a beautiful, useful, and inexpensive art easily acquired, and producing imitations of the richest and rarest stained glass; and also of making blinds, screens, skylights, Chinese lanterns, &c., in every variety of colour and design. 2549. Imitation of Coloured Glass. In decorating his house an Englishman spends as much money as he can conveniently spare; the elegances and refinements of modern taste demand something more than mere comfort; yet though his walls are hung with pictures, his drawing-rooms filled with bijouterie, how is it that the windows of his hall, his library, his staircase, are neglected? The reason is obvious. The magnificent historical old stained glass might be envied, but could not be brought within the compass of ordinary means. Recent improvements in printing in colours led the way to this beautiful invention, by which economy is combined with the most perfect results. A peculiar kind of paper is rendered perfectly transparent, upon which designs are printed in glass colours (vitre de couleurs), which will not change with the light. The paper is applied to the glass with a clear white varnish, and when dry, a preparation is finally applied, which increases the transparency, and adds tenfold brilliancy to the effect. 2550. Imitation of Half-Light. There is another design, printed in imitation of the half-light (abat-jour); this is used principally for a ground, covering the whole surface of the glass, within which (the necessary spaces having been previously cut out before it is stuck on the glass) are placed medallion centres of Watteau figures, perfectly transparent, which derive increased brilliancy from the semi-transparency of the surrounding ground. This is by far the cheapest method, though involving extra trouble, as the plain grounds printed in sheets are only a fourth the price of the sheets which contain the medallion Watteau centres or other small designs suitable for the purpose.