At this period Dürer was also engaged in experimenting upon the art of copper-plate engraving, in which he restricted himself mainly to reproducing copies of the works of other artists, among them those of Jacopo de Barbari, a painter of the Italian school, who was residing in Nuremberg, and who among other things gave the great artist instruction in plastic anatomy. The influence of his instructor is plain, when we compare engravings executed about 1504 with those published at a previous date, and especially when we examine his design of the Passion of our Lord painted in white upon a green ground, commonly known as "The Green Passion," which is treasured in the Albertina at Prague. He also during these twelve years finished seven of the twelve great wood-cuts illustrating the passion, and sixteen of the twenty cuts which compose the series known as "The Life of the Virgin." The activities of Dürer in Nuremberg were temporarily interrupted by a journey to Italy, which he undertook in the fall of the year 1505. What the immediate occasion for undertaking this journey may have been is not plain, though it seems most likely that one of his objects was to enable him to recuperate from the effects of a protracted illness, from which he had suffered during the summer of this year, and also incidentally to secure a market for his wares in Venice, the commercial relationships of which with Nuremberg were very close at this period. A German colony, composed largely of Nuremberg factors and merchants, was located at this time in Venice, and they had secured the privilege of dedicating a great painting in the church of St. Bartholomew. The commission for the execution of this painting was secured by Dürer. It represents the adoration of the Virgin, but has been commonly known under the name of "The Feast of the Rose Garlands." After having undergone many vicissitudes, it is preserved to-day in a highly mutilated condition in the monastery of Strachow, near Prague. Dürer's stay in Venice was signalized not only by the production of this painting, but of three or four other notable works which still exist, and which reflect the great influence upon him of the Italian school of painting, with which he had attained familiarity. His stay in Venice lasted about a year. In the fall of 1506, he returned to Nuremberg, and there remained for the next fourteen years, engaged in the practice of his art. These years were years of success and prosperity. His name and fame had spread over the whole of Europe, and the greatest artists of the day were glad to do him homage. Raphael said of him, when contemplating some of his designs, "Truly this man would have surpassed us all, if he had the masterpieces of ancient art constantly before his eyes as we have." A friendly correspondence was maintained between the immortal Italian and his German contemporary, and in his own country, all men, from the emperor to the peasant, delighted to do honor to his genius, the