Of the later book illustrations a somewhat better account may be given. Owing to the steady deterioration of paper and presswork, which was the real cause of the typographical decline, woodcuts by the end of the sixteenth century had gone quite out of fashion, the old simple style having been lost and no printer being able to do justice to the finer work on which designers insisted. But copper engravings throve in Germany and the Low Countries, and when the fashion of engraved frontispieces and titles took root in England in the last years of the century it was pursued with considerable success for a couple of generations, while in the eighteenth century the French _livres a vignettes_ attained an extraordinary brilliancy and elegance, and Gravelot and other French engravers bestowed some of their skill on English books. The use of wood, now worked with the graver and no longer with the knife, was revived in England by Bewick about 1784, and was pursued with varying success for over a century, great technical skill and, at least in the "sixties," very fine design being marred by the poverty and often the tawdriness of its typographical setting. Despite these drawbacks, the collectors who are bestowing attention on all this wood-engraved work of the nineteenth century will probably reap their reward. When wood engraving was killed a few years ago by the extraordinary perfection attained, at a much smaller cost, by the process block, its fate was shared by the line-engraved illustrations which had appeared fitfully throughout the century, and had lingered on in the beautiful work of C. H. Jeens, who died in 1879, and in the use of old plates. As the wood engraving was killed by the half-tone block, so the line engraving disappeared before the photogravure, and the colour processes now being rapidly perfected threaten to reduce all black and white illustrations to unimportance. In so far, however, as the new processes necessitate the use of heavily loaded papers as a condition of their being even tolerably well printed, the least antiquarian of collectors may be forgiven for neglecting the books illustrated by them. Some of them can only be preserved by every plate being backed with sound paper, and a hundred years hence of all this illustrated work, much of it really beautiful, which is now being produced in such quantities, very little will remain. The modern Groliers whom we tried to call forth at the beginning of this chapter will need to be experts both in paper and in leather if they are to leave behind them any permanent record of their good taste. But this is only a crowning proof of how urgently they are needed.