Marc Antonio's death did not bring with it the ruin of line engraving in Italy. The numerous pupils he had educated, and in turn the pupils of these, handed down to the beginning of the seventeenth century the master's manner, and propagated his doctrines in neighbouring countries. We have spoken of the revolution which their works produced in German art; we shall presently see French art submitting in its turn to Italian influences. Meanwhile, and even during Marc Antonio's life, a particular sort of engraving was making rapid progress in Italy. It consisted in the employment of a process, popularised by Ugo da Carpi, for obtaining from several wooden blocks proofs of engravings in camaïeu: that is, as we explained at the beginning of this book, proofs in two, three, or four tones, offering almost the same appearance as drawings washed in with water-colour: a process which Ugo did not really invent, but only improved from the first attempts made at Augsburg in 1510 by Jobst Necker, which were destined to be still further improved by Nicolò Vicentino, Andrea Andreani, Antonio da Trento, and many others. A great number of pieces, executed in the same manner from Raphael and Parmigiano, prove the skill of Ugo da Carpi, who unfortunately took it into his head to introduce into painting even more radical changes than those he had first promoted in engraving. He conceived the strange idea of painting a whole picture with his finger, without once having recourse to a brush, and, the proceeding appearing to him praiseworthy, he perpetuated the recollection of it in a few proud words at the bottom of the canvas. Michelangelo, to whom the picture was shown as a remarkable curiosity, merely said that "the only remarkable thing about it was the folly of the author." What would he have thought of Luca Cambiaso, the Genoese, whose talent consisted in painting with both hands at once? The practice of engraving in camaïeu was not continued in Italy and Germany beyond the last years of the sixteenth century. Even before then wood engraving, properly so called, had reached a stage of considerable importance in both countries; and it had distinguished itself by decided enough progress to cause engraving in camaïeu to lose much of the favour with which at first it was welcomed.