Flemish art above all others reached a high level of perfection at this time that has scarcely ever or anywhere been surpassed. The work of the brothers Van Eyck, accomplished just before the opening of Columbus' Century, paved the way for a great new development of art and made their invention of painting in oil the favorite medium of pictorial expression. After such a work as "The Adoration of the Lamb," at Ghent, no one could doubt either of their genius as artists or the future of the new mode in painting. Their pupil, Roger Van der Weyden, did not excel his masters, but carried on worthily the tradition which they had established, and passed on the torch which they had lighted to successors whose fame was to be undying. Memling is indeed a great master in painting, almost never excelled, seldom equalled and representing a phase of art development quite independent of the humanistic side of the Renaissance. {72} The wonderful decorations of the casket of St. Ursula in the Hospital of St. John at Bruges, done just about the time of the discovery of America, are not unworthy to be placed beside the greatest art of Europe from any period. The almost more beautiful "Adoration of the Magi" in the same place shows a minute finish in detail, a marvellous power of composition, a charm of expression and a wonderful application of colors which have not faded during all these four and a half centuries, which deservedly place it among the world's supreme artistic triumphs. What Giotto is at Padua in the Arena, and Fra Angelico in San Marco at Florence, Memling is in the Hospital of St. John at Bruges. The pictures must be seen in all the glory of their unfading colors to be properly appreciated or to enable those who are less familiar with the great work of the Netherlands painters to understand the encomiums of critics; but even uncolored reproductions give some idea of the charm of the originals.