In 1673 the first plate-glass was manufactured at Lambeth, under a royal charter; but no great progress was made at that time, and the works for the purpose were doubtless very limited. One hundred years later, _i.e._ 1773, a Company was formed, under a royal charter, called the "Governor and Company of the British Cast Plate-Glass Manufactory," with a capital of eighty shares of five hundred pounds each, their works being at Ravenshead, in Lancashire. These works have been very successfully conducted, and, according to a late writer, are rivalled by none, excepting those at "St. Gobain," in France. Since the excise duty on plate-glass has been repealed, its manufacture has increased to a wonderful extent; the quantity used in the construction of the Crystal Palace, for the World's Fair, being probably many times larger than that manufactured twenty years since in the kingdom of Great Britain in any one year. An English paper states that Roger Bacon, at sixty-four years of age, was imprisoned ten years for making concave and convex glasses, and camera-obscura and burning-glasses. It is to many persons matter of great surprise that the manufacture of plate-glass has never been introduced into this country. The whole process is a simple one. The materials are as cheap here as in England or in France. Machinery for the polishing of the surface is as easily procured, and water-power quite as abundant, as in either country. The manufacture, with the materials so ready to the hand, and these together with the skill, labor, and demand, increasing every year, is most certain to realize a fair remunerating profit and steady sale. Besseman has lately introduced a new method of casting plate-glass, which, should it equal the inventor's expectation, will reduce the cost, supersede the old plan, and eventually, of course, increase the consumption. CURIOSITIES OF GLASS-MAKING. We gather from the ancient writers on glass-making, that the workers in the article had, at a very early period, arrived at so great a degree of proficiency and skill as to more than rival, even before the period of the Christian era, anything within the range of more modern art. The numerous specimens of their workmanship, still preserved in the public institutions of Europe, and in the cabinets of the curious, prove that the art of combining, coloring, gilding, and engraving glass was perfected by the ancients. Indeed, in fancy coloring, mosaic, and mock gems or precious stones, the art of the ancients has never been excelled. Among the numerous specimens it is remarkable that all vessels are round; none of ancient date are yet found of any other form. And no specimen of crystal glass of ancient date has yet been found.