combine completely with the Glass. It was, however, from the Bohemian that the idea was caught by some French manufacturers, who, after having expended a considerable sum in the attempt, at length succeeded in incrusting several medallions, and from their almost invariably breaking while under the operation of cutting, very few were finished; and the manufacture was upon the point of being abandoned, when it was fortunately taken up by a French gentleman, Monsieur de St. Amans, who, was a perseverance not less honourable to himself than in its results advantageous to the arts, prosecuted a series of experiments, by which, in a few years, he very considerably improved the invention. The French have, however, not succeeded in introducing incrustation into articles of any size, such as decanters, jugs, or plates; but have contented themselves with ornamenting smelling-bottles, and small trinkets. Nor had the invention been applied to heraldry, or any other purpose, antecedently to the recent improvements upon the art in this country.

England has long been famed for bringing to perfection, and directing to useful application, the crude inventions of other countries. A patent was, some years since, taken out by the author of this work for ornamental incrustations, called "Crystallo-Ceramic," which excited considerable notice at the time. By this process, ornaments of any description—arms, ciphers, portraits, and landscapes of any variety of colour—are enclosed within the Glass, so as to become chemically imperishable. The substance of which these ornaments are composed, is less fusible than Glass; it is incapable of