Wood-engraving, however, has been practised in our time less as a fine art than as a useful art; and if little that is valuable for artistic worth has been executed by engravers since the days of Nesbit, Clennell, and Thompson, the application of wood-engraving for merely useful purposes has been of the greatest service. It has become a most powerful instrument of popular education; it imparts the largest share of the visual knowledge which the people have of the things they have not directly seen; its utility as a means of instruction by its representation of the objects with which science deals, and the mechanical contrivances and processes which science employs, and also as a means of influence in caricature and of simple popular amusement, is incalculable; and, notwithstanding its low level in art, there can be no doubt that it frequently assists the exercise of the popular imagination, and sometimes generates in the better-endowed minds among the people a real sympathy with the higher products of art and an appreciation of them. These utilities, indeed, so overbalance its value simply as a fine art as to give it a distinctive character, when its practice now is compared with that of any previous time; as, formerly, it reflected the aspects of changing civilization, now it reflects the peculiar character of our time, and shows how great has been the gain in the popular hold upon the material comforts of life and upon intelligence, and how great has been the loss in the community’s appreciation of purely artistic results. This is especially true of the earlier American practice of the art, which seldom resulted in any work of artistic value. [Illustration: FIG. 75.--The Creation. Engraved by J. F. Adams.] [Illustration: FIG. 76.--The Deluge. Engraved by J. F. Adams.]