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.
This new method of newspaper stereotyping was originally employed on the cylinders of the Applegath and Hoe Presses.

But it is equally applicable to those of the Walter Press, a brief description of which we now subjoin.