In the glazed tiles, inseparably associated with Delft and other places in Holland, the Dutch had admirable material for interior decoration. Some tiles were pure white; others had conventional floral forms painted upon them. Many, again, were decorated with devices derived from scriptural, nautical, rural, historical, and classical sources. Units such as these, beautiful in themselves, were capable of giving lively and gay effects when arranged together. How satisfactorily they were used will have been already observed in the fireplaces previously described. But, apart from giving value to fireplaces, they were employed in other ways. Notable rooms are to be seen whose good appearance depends primarily upon the skilful manipulation of tiles. Two such are illustrated, one in colour (opposite). They are from Hindeloopen, and are now in the Frisian Museum at Leeuwarden. The original woodwork of the coloured drawing belongs to the seventeenth century. The back of the fireplace, as well as the walls surrounding it, is faced entirely with tiles from floor to ceiling. Those towards the floor have blue and white patterns upon them; above, and in the window recess, they are white but for the narrow blue borders round the angles. These tiles were made at Makkum. Upon the floor are glazed quarries of red and black, laid in alternate colours. The room of the other illustration (page 137) dates from the eighteenth century. It has similar tiles on the walls and quarries on the floor. Floors were also laid with other coloured quarries, blue and green and yellow; while in larger houses stone and marble were employed with pleasing results. Panelling was by no means infrequently applied to interior walls. It was often marked by elaboration rather than simplicity, although there are not wanting examples of rooms wainscoted with plain framed woodwork divided into panels by stiles and rails. Of ornamental panels there are certain definite kinds. Characteristic are those adorned with linen-fold patterns. Another design that was favoured is shown in the illustration taken from Zwolle (page 138), where carved vine ornaments appear between two curved and moulded scrolls set back to back. This particular example is attributed to the beginning of the sixteenth century. At a later date round-headed arches and pilasters were introduced, such as those exemplified from Leiden on this page, as well as carved friezes and moulded cornices. It is remarkable to note the great similarity between the development of panelling in Holland and in England. The earlier patterns employed in both countries are practically identical, while Dutch seventeenth-century woodwork bears great resemblance to that of our Jacobean period.