mind to realize the place which pictures filled in mediæval life, before the invention of printing had brought about that great change which has resulted in making books almost the sole means of education. It was not merely that the paintings upon the walls of the churches conveyed more noble conceptions to the peasant and the artisan than their slow imagination could build up out of the words of the preacher; like children, they apprehended through pictures, they thought upon all higher themes in pictures rather than in words; their ideas were pictorial rather than verbal; painting was in spiritual matters more truly a language to them than their own patois. They could not reason, they could not easily understand intellectual statement, they could not imagine vividly, they could only see. This accounts for the rapid spread of the new art, and for the popularity and utility of the holy prints which were so widely employed to convey religious ideas and quicken religious sentiment; in the production of these wood-engraving appears from the first in its true vocation as a democratic art in the service of the people; its influence was one, and by no means the most insignificant, of the great forces which were to transform mediæval into modern life, to make the civilization of the heart and the brain no longer the exclusive possession of a few among the fortunately born, but a common blessing. Wood-engraving was at once the product of the desire for this change and of the effort toward it, a mirror of the movement the more valuable because the art was more intimately connected with the popular life than any other art of the Renaissance, and a power feeding the impulse from which it derived its own vitality. In this fact lies the historic interest of the art to the student of civilization. At first it served mediæval
