The art had, however, been born, and could not be kept down. It was revived in France, in Germany, and in America. Fifty years after the discovery of Ged, Tilloch and Foulis, of Glasgow, patented a similar invention, without knowing anything of what Ged had done; and after great labour and many experiments, they produced plates, the impressions from which could not be distinguished from those taken from the types from which they were cast. Some years afterwards, Lord Stanhope, to whom the art of printing is much indebted, greatly improved the art of stereotyping, though it was still quite inapplicable to newspaper printing. The merit of this latter invention is due to the enterprise of the present proprietor of The Times. Mr. Walter began his experiments, aided by an ingenious Italian founder named Dellagana, early in 1856. It was ascertained that when papier-mache matrices were rapidly dried and placed in a mould, separate columns might be cast in them with stereotype metal, type high, planed flat, and finished with sufficient speed to get up the duplicate of a forme of four pages fitted for printing. Steps were taken to adapt these type-high columns to the Applegath Presses, then worked with polygonal chases. When the Hoe machines were introduced, instead of dealing with the separate columns, the papier-mache matrix was taken from the whole page at one operation, by roller-presses constructed for the purpose. The impression taken off in this manner is as perfect as if it had been made in the finest wax. The matrix is rapidly dried on heating surfaces, and then accurately adjusted in a casting machine curved to the exact circumference of the main drum of the printing press, and fitted with a terra-cotta top to secure a casting of uniform thickness. On pouring stereotype metal into this mould, a curved plate was obtained, which, after undergoing a certain amount of trimming at two machines, could be taken to press and set to work within twenty-five minutes from the time at which the process began. Besides the great advantages obtained from uniform sets of the plates, which might be printed on different machines at the rate of 50,000 impressions an hour, or such additional number as might be required, there is this other great advantage, that there is no wear and tear of type in the curved chases by obstructive friction; and that the fount, instead of wearing out in two years, might last for twenty; for the plates, after doing their work for one day, are melted down into a new impression for the next day's printing. At the same time, the original type-page, safe from injury, can be made to yield any number of copies that may be required by the exigencies of the circulation. It will be sufficiently obvious that by the multiplication of stereotype plates and printing machines, there is practically no limit to the number of copies of a newspaper that may be printed within the time which the process now usually occupies.