Late Gothic windows have also pointed and elliptical arches over the heads unenriched by decoration. They were customarily built in brickwork, with the window spaces flush, or set back from the face of the walling. Pointed arches ceased to be generally used after the coming of the Renaissance. The elliptical shape, however, continued, and the establishment of the circular arch was but a short and natural step in development. These two forms obtained for many succeeding years. Instances of either type are presented in the drawing from Zwolle (page 101), and innumerable others are shown by the illustrations in this volume. They were not given up until displaced by classic pediments, or the overhead feature was altogether abandoned. The gabled front at Gorinchem (page 103), built in stone and brick, has circular arches appearing over the windows. The enclosed spaces are richly decorated by stone carvings, and the character of the work seems to be advanced for the period to which it apparently belongs. Much interesting sculpture is also distributed over the gable and walls of this building. Windows were first glazed with leaded lights. Small squares of glass, as at Dordrecht (page 98), or diamond panes were used. But during the seventeenth century the employment of wooden bars became universal and leadwork went out of fashion. The openings were divided centrally by transoms, the lower windows receding inwards considerably more than the upper ones. Wooden shutters, opening outwards, were still customary. They were occasionally large enough to cover the whole window, but usually only the lower half was furnished with them. Seventeenth-century shutters are not comparable, in point of carved enrichment, with those of Gothic times; the woodwork, frequently devoid of ornament, is fastened to the window-frames by iron strap-hinges, and fitted with bolts and catches. They are, however, brightly painted and are interesting in consequence, giving colour to the architectural groups. Many harmonious schemes are to be observed; green and white; white, green and red; yellow and black; red and black; and numerous others. The coloured drawing from Nijmegen (opposite) shows shutters painted in red and black; while several specimens, from North and South Holland, are given (pages 98 to 100). The glazing of windows was first enclosed by casements, with hinges to open and shut. After casements came sash windows, which were substituted for the older form. There are many shown in the illustrations. Those from Flushing (page 105), appearing on a house dated 1625, differ somewhat from the usual type, being surrounded by mouldings and carvings. Dormer windows also, as has already been stated, became much-developed features during the seventeenth and eighteenth centuries. Three characteristic specimens are given: two from Kampen, of the years 1626 and 1634, and a later dormer, from Marssum, belonging to the eighteenth century, all shown on page 102.