It is a mistake to suppose that a good effect cannot be obtained by the use of the cheaper makes of bricks, a remark which also applies in the case of the London stock-bricks, so long as they are not uniformly selected; a good effect may be gained, for instance, by using a few of the darker ones indiscriminately with the cream-coloured ones. The splash of dark colour caused by the black ones coming together is by no means undesirable. A good example of an effective use of these bricks is to be seen at Brewer’s Estate, London. ROOF COVERING.—The materials to be employed in roofing depend upon the style of cottage, and also upon the locality. The Bangor slates are cheap, and may be an excellent covering as regards durability; but unfortunately, in the class of cottages here dealt with, it is rarely possible to get so good an effect with them as with other kinds. They may be used, however, in the whitewashed cottage, so long as the smaller sizes are selected. Hand-made roofing tiles, and thick Welsh green and rustic Precelly slates may be recommended, as also the Peake’s & Hartshill hand-made tiles. Pantiles are cheap, but should only be employed on unbroken roofs having few valleys, where it is less difficult to keep out the wet. The roof should be steep, the angle in no case being less than 45 degrees. Before covering, care should be taken to ascertain whether they are of good manufacture, and whether they are porous or not. There are sometimes pantiles of an indifferent quality on the market; and, if this precaution is not taken, a roof may have to be stripped and re-tiled. Where they have been used and have afterwards been found to be bad they may be tarred, as are wood coverings in Norway and Sweden. It is always essential that the services of a practised layer of pantiles should be secured. Gables should have damp courses under the coping to shield them from frost and wet. Roof ridging should have careful attention, and it is wiser to suppress rather than to sharpen, the better to obtain that rustic appearance suitable to a cottage. Many fantastic ridges, with vulgar finials, are employed in the building of small suburban villas, of a more or less sharp-pointed character, and of a depth out of proportion to the roof, which gives an unpleasant harshness to the general appearance. With the principle in view that the sky-line should be softened as much as possible, the brindled hand-made half-rounds should be used. With green slates, ridges of blue are the most suitable, as the colours harmonise. Experience will probably show that the red and buff ridges will not stand the weather so well as other kinds.