has alternate headers and stretchers in every course. Dutch brickwork shows a wide range of colouring. Some is very dark and of a purple tint; some is yellow, particularly in the neighbourhood of Dordrecht; red bricks there are in every town; while at Breda they gradate from lemon yellow to a delicate salmon pink. It will be perceived that materials such as these offered means for harmonious combinations. The possibilities were appreciated, and about the country there exist many happy effects which were secured by blending the various coloured bricks. It was a favourite method to build walls with parti-coloured bands running horizontally through them in the manner shown from Franeker (page 26), where four courses of red bricks interchange with one of yellow. Mouldings and surrounds to openings often contrasted with the prevailing colour of the building. As an illustration of this, the example from Dordrecht (below) may be cited; the walls are formed with yellow bricks and the decorated window-heads with red. In addition to effects obtained by colour harmonies, enrichment was secured by applying moulded and shaped brickwork. It was confined principally to the doorways, windows and string courses, and how successful this system of ornamentation can be will be realised by further reference to the two above-mentioned drawings. Among other familiar features of Dutch buildings are the mosaic decorations which generally occupy the arched spaces over window-heads. Made up of simple units--square or shaped bricks and little pieces of stone--they were set together to form repeating patterns and devices. Many of the houses, such as that at Dordrecht (page 27), attain distinction by reason of these interesting and freely rendered details, and they will be more fully considered in the following chapter on exterior features.