St. Denis, as it now appears, presents the noble elegance of Gothic art in its golden hour. The new transept was made of exceptional width; its aisles and stately piers compose picturesque vistas. The triforium of the reconstructed church was glazed, one of the first essays of a feature which was to be in general use in the XIV century. To unite triforium and clearstory in a brilliant sparkle of color added to the magnificence of a church, but it marked a decline in the sound structural laws of Gothic. The purpose of a triforium arcade was to beautify the plain wall surface necessitated by the lean-to roof over the side aisles. When that blind arcade was opened, the lean-to roof of the aisles had to be changed to a conical one, which signified an inner channel for rain water and the ultimate deterioration of the masonry. Suger's St. Denis had started the delight in stained glass, and the St. Denis of St. Louis merely carried out its consequences--the suppression of wall inclosures. The present upper windows of the abbatial are poor examples of Louis-Philippe's day. The architect of Louis IX, Pierre de Montereau, designed St. Denis as we have it to-day, so says a record recently unearthed by M. Henri Stein.[33] He was an innovator who here first accentuated the upward sweep of Gothic lines. To that XIII-century master they attributed for a time the Sainte-Chapelle of the king's palace in the Cité, but now that it is certain that he planned St. Denis, it is doubted if he made the Sainte-Chapelle, as there is little kinship between the two. There is a decided likeness between St. Denis and the chapel of the palace at St. Germain-en-Laye, and also with the Lady chapel of St. Germer-en-Flay. Pierre de Montereau was buried in 1267 in a now-destroyed Sainte-Chapelle which he had erected within the monastery inclosure of St. Germain-des-Prés, at Paris. Both Montereau and Montreuil claim this distinguished master. Probably he was born in the former town on the border of Champagne, as his church at St. Denis shows a trait of that region, the gallery of circulation under the windows of the side aisles. Moreover, two of his abbot patrons came from Montereau. The architect Eudes de Montreuil, whom St. Louis took with him on his first crusade, and who worked on the fortresses of Aigues-Mortes and Jaffa, was a son of Pierre de Montereau, it is supposed, and his name should be spelled in the same way. No tomb in St. Denis' abbey church predates the XIII century. To honor King Dagobert, founder of the abbey, St. Louis put up an elaborate monument and ordered the effigies that distinguish his royal predecessors' graves. With the tombstone of St. Louis' son, Philip the Bold, began portrait work. An exact likeness of Charles V, the good Valois king, was made by his Flemish sculptor, André Beauneveu, and of almost too great realism is that of his general Bertran Duguesclin, whom King Charles ordered buried with royal honors in the national necropolis.