Note 104 — X
Reading edition
They were common during the first quarter of the fifteenth century. Bernard, De l’origine de l’imprimerie, vol. I, p. 102. Fournier, De l’origine et des productions de l’imprimerie, p. 176. Papillon, Traité historique et pratique de la gravure sur bois, vol. I, p. 101. Guichard, Notice sur le Speculum, p. 118. They have been noticed also by Passavant. It is plain that copyists everywhere recognized the utility of engraving.