The new 'societe' has greatly extended and strengthened its operations since 1831. The works at Tour-la-ville have been abandoned, the site sold, and the workmen transferred to St.-Gobain. The glassworks of St.-Quirin, the proprietors of which, on the abolition in 1804 of privileges in general, had taken to making plate glass, were taken over in 1858 by the St.-Gobain company, together with certain other works at Mannheim in Germany and the chemical works at Cirey, and the 'societe' assumed the name under which it is now known of 'The Company of Mirrors and Chemical Products of St.-Gobain, Chauny, and Cirey.' In 1863 it bought up the works at Stolberg near Aix-la-Chapelle in Rhenish Prussia, in 1868 a minor manufactory at Montlucon in the Department of the Allier, and finally during this current year 1889 it is establishing a manufactory at Pisa in Italy. The operations of the company, as it now exists, extend to six manufactories of mirrors, six manufactories of chemicals, a mine of iron pyrites, a salt mine, many thousand hectares of forests in this department of the Aisne and in the province of Lorraine, and to a local railway connecting St.-Gobain with Chauny, where the plate glass cast at St.-Gobain is polished and the mirrors are silvered. At St.-Gobain, besides the plate glass mirrors, glass is made for roofs, for floors, for pavements, for optical instruments, including the finest lenses used in the lighthouses of France. Here, as I have said, the lens was made now used at the top of the Eiffel Tower in Paris, from which, night after night, a gigantic auroral ray of electric light leaps into space and shoots for miles athwart the sky, to the inexpressible delight of the gaping crowds below, and I hope to the edification of the world of science. Since 1870 the output of the company from its various manufactories has more than doubled. It now amounts, in round numbers, to 800,000 square metres a year of polished plate glass; to 500,000 square metres a year of rough glass; to a million kilogrammes a year of blocks and castings for floors and roofings, and to eighty thousand kilogrammes a year of optical glasses of all sorts. In the time of Louis XIV. and before Lucas de Nehou had made his invention of plate glass, there was absolutely no public demand for what in those days were called 'large mirrors' made in the Venetian fashion, mirrors which to-day would not find a market in the most remote frontier towns of America or Australia. Colbert then wrote to the Comte d'Avaux apropos of the works of Lucas de Nehou in Normandy, that 'there was absolutely no market for large mirrors in the kingdom, the king being the only person who could possibly need them!' This was in 1673.