But before arriving at the movable type placed side by side, and forming phrases, which appears to us to-day so simple and so ordinary, many years passed. It is certain that long before Gutenberg a means was found of cutting wood and metal in relief and reproducing by application the image traced. Signs-manual and seals were a kind of printing, inasmuch as the relief of their engraving is impressed upon a sheet by the hand. But between this simple statement and the uncritical histories of certain special writers, attributing the invention of engraving to the fourteenth century, there is all the distance of legendary history. Remembering that the numerous guilds of _tailleurs d'images_, or sculptors in relief, had in the Middle Ages the specialty of carving ivories and of placing effigies on tombs, it can be admitted without much difficulty, that these people one day found a means of multiplying the sketches of a figure often asked for, by modelling its contour in relief on ivory or wood, and afterwards taking a reproduction on paper or parchment by means of pressure. When and where was this discovery produced? We cannot possibly say; but it is certain that playing cards were produced by this means, and that from the year 1423 popular figures were cut in wood, as we know from the St. Christopher of that date belonging to Lord Spencer. It is not our task to discuss this question at length, nor to decide if at first these reliefs were obtained on wood or metal. It is a recognised fact that the single sheet with a printed figure preceded the xylographic book in which text and illustration were cut in the same block. This process did not appear much before the second quarter of the fifteenth century, and it was employed principally for popular works which were then the universal taste. The engraving also was nothing more than a kind of imposition palmed off as a manuscript; the vignettes were often covered with brilliant colours and gold, and the whole sold as of the best quality.