Stained glass has been more than once referred to. It is to be found in its greatest perfection in France, as for example in La Sainte Chapelle at Paris, and the cathedrals of Le Mans, Bourges, Chartres, and Rheims. All that has been said in the introductory chapter on this, the crowning ornament of Gothic architecture, and on its influence upon window design, and through that, upon the whole structure of the best churches, is to the full as applicable to French examples. Coloured decoration was also frequently employed in the interior of churches and other buildings, and is constantly to be met with in French buildings, both secular and religious. In most cases, however, it is less easy to appreciate this than the stained glass, for, as it is now to be seen, the colours are either faded and darkened by time and smoke, or else restored, not always with the exactness that could be desired. _Construction and Design._ The construction of the great buildings of the middle ages in France is an interesting subject of study, but necessarily a thoroughly technical one. Great sagacity in designing the masonry, carpentry, joinery, and metal-work; and trained skill in the carrying out the designs, have left their traces everywhere; and while the construction of the earlier castles and of the simple churches shows a solidity but little inferior to that of the Romans themselves, the most elaborate works, such for example as the choir at Beauvais (Fig. 38), can hardly be surpassed as specimens of skill and daring, careful forethought, and bold execution. [Illustration: FIG. 38.--BEAUVAIS CATHEDRAL, INTERIOR. (1225-1537.)] Design, in France, pursued the general principles of Gothic architecture to their logical conclusions with the most uncompromising consistency. Perhaps the most distinctive peculiarity in French cathedrals is a love of abstract beauty, and a strong preference for breadth, regularity, dignity, and symmetry wherever they come into competition with picturesqueness and irregular grouping. There is, it is true, plenty of the picturesque element in French mediæval art; but if we take the finest buildings, and those in which the greatest effort would be made to secure the qualities which were considered the greatest and most desirable, we shall find very strong evidences of a conviction that beauty was to be attained by regularity and order, rather than by unsymmetrical and irregular treatment. BELGIUM AND THE NETHERLANDS. Belgium is a country rich in remains of Gothic architecture. Its art was influenced so largely by its neighbourhood to France, that it will not be necessary to attempt anything like a chronological arrangement of its buildings. Fine churches exist in its principal cities, but they cannot be said to form a series differing widely from the churches of France, with which they were contemporary, and where they differ the advantage is generally on the side of the French originals.