The south-east aspect is most suitable for the best rooms of a house, because it escapes some of the east wind, and part of the scorching heat and beating rain of the south. It is admirably adapted, therefore, for a drawing-room or day-room, is the most pleasant aspect for bedrooms, and is best suited for the nursery or for the rooms of an invalid. The south-west aspect is the least congenial of all, because it is so open to a sultry sun and blustering winds. This aspect should never be chosen for a dining-room; in summer it is unpleasantly hot for bedrooms; and it is not suitable for a porch or entrance, on account of the driving rains which prevail during a portion of the year. The south aspect is not very desirable for the windows of a dining-room, and is unpleasant for a morning-room, unless a verandah has been provided. The larder and dairy should never face the south. The west aspect is not quite agreeable for a dining-room, on account of the excessive heat prevailing in the summer afternoons; neither is it desirable for the drawing-room; and it should never preferably be chosen for bedrooms, although it is very agreeable for a smoking-room. One side of a conservatory should always face to the west. The north-west aspect is very good for a billiard-room, also for a dining-room, if the windows are fitted up with blinds to shade the sun. =Construction.= _Foundation._--Bearing in mind what Dr. Simpson has said as to the house acting as a suction pump, drawing up moisture and gases, often most noxious, from the soil on which it is built, it is clear that the foundation ought to be air-tight and water-tight; for besides the emanations due to the soil, we must remember that escape from the gas-pipes laid in the street is a very common occurrence, that sewers are apt to leak, and so the soil in the neighbourhood of houses may become saturated with filth. Fatal instances are known where coal gas and other foul vapours have been drawn, as it were, long distances and poisoned the air of a house or houses. The only way of guarding against this is to have the foundations, and some distance outside the foundations, laid in concrete. There should also be a space between the basement wall and the surrounding earth. No one, in Eassie’s opinion, would think of building a dwelling on a patch of ground without first removing the vegetable mould to some depth below the level of the floor; and however good the soil, it is very desirable to cover the site with a layer of concrete to keep out damp and bad exhalations. Rawlinson even advises a bed of charcoal below the concrete. Simpson insists that if a cottage floor has to be laid on the bare ground, there ought at least to be a bed of good concrete below the tiles. Cellars add to the dryness and healthiness of a house if the walls and floors are made impervious to air and water, and are properly ventilated. The walls of the house ought to have a damp-proof course to prevent the moisture rising in them.