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 as the invention of the art of printing. And it is worth mention in passing that, as an example of fine typography, the earliest book printed with movable types, the Gutenberg, or "forty-two line Bible" of about 1455, has never been surpassed.

Printing, then, for our purpose, may be considered as the art of making books by means of movable types. Now, as all books not primarily intended as picture-books consist principally of types composed to form letterpress, it is of the first importance that the letter used should be fine in form; especially as no more time is occupied, or cost incurred, in casting, setting, or printing beautiful letters than in the same operations with ugly ones. And it was a matter of course that in the Middle Ages, when the craftsmen took care that beautiful form should always 112