The use of white line not only affected the art by making it more easy to practise, but also involved a change in the mode of drawing. Formerly the effects were given by the designers’ lines, now they were given by the engravers’ lines; in other words, the old workman followed the designer’s drawing, the modern workman draws himself with his graver. By the old method the design was reproduced by keeping the same line-arrangement that the artist employed; by the new method the design is not thus reproduced, but is interpreted by a line-arrangement first conceived by the engraver. In the earlier period the design had to be a drawing in line for the engraver to cut out and reproduce by leaving the original lines in relief; now the design may be a washed sketch, the tints of which the engraver reproduces by cutting lines of his own in intaglio. The change required the modern engraver to understand how to arrange white lines so as to obtain artistic effects; he thus becomes an artist in proportion to his knowledge and skill in such arrangement. It is clear that, no matter how much mechanical skill, firmness, justness and delicacy of touch were requisite in the older manner of following carefully and precisely the lines already drawn upon the block, still the engraver was precluded from exercising any original artistic power he might have; he could appreciate the artistic value of the design before him, and, like Hans Lützelburger, show his appreciation by his fidelity in rendering it, but the lines were not his own. The new method of reproducing artists’ work by means of lines first conceived and arranged by the engraver requires, besides skill of hand, qualities of mind--perception and origination, and the judgment that results from cultivated taste. This is what is meant when it is said that the true art of wood-engraving is not a hundred years old, for it is only within that time that the value of a print has been due to the engraver’s capacity for thought and his artistic skill in line-arrangement, as well as to the designer’s genius. The use of white line as a mechanical mode of obtaining color was not unknown in the sixteenth century, and the artistic value of white line was definitely felt in early French and Italian wood-engraving; but the possibilities of development were not seen, and no such development took place. The step in advance was taken by Bewick, who thus disclosed the opportunities which wood-engraving offers its craftsmen for the exhibition of high artistic qualities. The white line revolutionized the art, and this is the essential meaning there is in calling Bewick the father of wood-engraving.