the Carafa coat of arms being variably screened by vertical and horizontal lines (modern sable), vertical lines (modern gules), or horizontal lines (modern azure). According to the data from the Plantin-Moretus archive, the book emblems were firstly prepared by artist-engravers in the service of the Jesuits. Between December 1631 and June 1634 these were redone by André Pauwels (Andries Pauli, 1600–1639) for Balthasar Moretus (1574–1641). The allegorical title page of this book was prepared by Rubens where Mercury symbolizes the arts. The explanation on the mentioned engraving is given in page 480 of the book. Petra Sancta characterizes the title page of this book in the conclusion as an expression of the power of emblematic way of illustration. The book also contains the portrait of Carafa, engraved in 1632 by Michel Natalis (Liège, 1610–1668). On the escutcheon of this engraving we can see a kind of a screening or hatching as well. Thus it’s obvious that Petra Sancta got the model for his heraldic hatching system from the illustrators and publishers of his books in the Low Countries. It is possible that these engravers also knew at least two earlier hatching systems by Zangrius in 1600, and Francquart in 1623. The techniques of heraldic hatching might have even been carried forward by the guilds of engravers one after another. The arms on the title page of one of the Francesco Corbelletti’s 1639 publications, i. e. the Rome publisher of Petra Sancta, already represents a complete example of heraldic hatching. That means Corbelletti took over the heraldic hatching system already in the next year after the 1638 system of Petra Sancta appeared. If we consider the time needed to prepare the engravings and the approval by the censor, Corbelletti must have known the hatching system of Petra Sancta even before 1638. Aegidius Gelenius was deeply influenced by Petra Sancta; the men met several times in Cologne. Gelenius's hatching system from 1645, however, is identical only at two points with that of Petra Sancta. Works Silvestro Pietrasanta: Iter Fuldense ... Petri Aloysii Carafae ... in quo periocha historiae, visitatio, & reformatio ... abbatiae S. Salvatoris civitatis Fuldensis continetur / Caelius Servilius [i.e. Silvestro Pietrasanta] ... Roberto Canonico patritio Ferrariensi dicat. Leodii, 1627 Silvester Petrasancta: Silvestri Petrasanctae Romani Soc. Iesv theologi Notae in epistolam Petri Molinaei ad Balzavm, cum responsione ad haereses, errores & calumnias eius, ac vindiciis urbis Romae & Pontificis Romani.