Another early woodcut is the Brussels Print, which is in the Royal Library at Brussels. It is ostensibly dated 1418, but although this date is accepted by some, it has most probably been tampered with, and therefore the position of the print is at least doubtful. It is of Flemish origin, and represents the Virgin and Child, accompanied by SS. Barbara, Catharine, Veronica and Margaret. Other prints exist which are not dated, and it is quite possible that some of these may be older than the St Christopher, though no definite statements as to their date can be made. It is certain, however, that the art of block-printing was known in the closing years of the fourteenth century, and that it was practised thenceforward until about 1510, that is, some years after the invention of typography. In many manuscripts of the period, printed illustrations were inserted by means of blocks, either to save time, or because the scribe's skill did not extend to drawings. These early woodcuts were the forerunners of the better known block-books, which also, according to Heinecken, were at first the work of the card-makers. Block-books consisted of prints accompanied by a descriptive or explanatory text, both text and illustration being printed from the same block. Since they were intended for the moral instruction of those whose education did not fit them for the study of more elaborate works, they generally deal with Scriptural and religious subjects. The earliest of all the block-books was the _Biblia Pauperum_, or "Bible of the Poor," so called because it was designed for the edification of persons of unlearned minds and light purses, who could neither have afforded the high prices demanded for ordinary manuscript copies, nor have read such copies had they owned them. The _Biblia Pauperum_, however, exactly met their want. It is not so much a book to read, as a book to look at. It has a text, it is true, but the text is subordinate to the pictures.