The origin of this art is to be sought for in that of cutting on wood, just as in printing, the use of wooden types led to the adoption of metal. The period of the first invention of wood engraving is unknown; the French and the Germans tracing it to that of playing-cards, which the former affirm were first used in France in the time of Charles V.; while the latter maintain they were in use much earlier in Germany, or before the year 1300.[84] Both these opinions were first attacked by Papillon, in his "Treatise upon cutting in Wood," where he claims the merit of the discovery for Italy, and finds the most ancient traces of the art about the year 1285, at Ravenna. His account of it is republished in the preface to the fifth volume of Vasari, printed at Siena; but it is mixed up with so many assertions, to which it is difficult to give credit, that I must decline considering it at all. The Cav. Tiraboschi is a far more plausible and judicious advocate in favour of Italy.[85] On the subject of cards, he brings forward a MS. by Sandro di Pippozzo di Sandro, entitled _Trattato del Governo della Famiglia_. It was written in 1299, and has been cited by the authors of the Della Cruscan dictionary, who quote, among other passages, the following words: "if you will play for money, or thus, or at cards, you shall provide them," &c. We may hence infer, that playing-cards were known with us earlier than elsewhere, so that if the invention of stamping upon wood was derived from them, we have a just title to the discovery. In all probability, however, it does not date its origin so early; the oldest playing-cards were doubtless the work of the pen, and coloured by the old illuminators, first practised in France, and not wholly extinct in Italy at the time of Filippo Maria Visconti, duke of Milan.[86]