In country places, where there is no sewage to contaminate the soil, a hard, well-beaten dirt floor is not particularly objectionable, except that it cannot well be cleaned. Boards raised from the ground by small blocks nailed to the under side, and leading to bins, cupboards, and furnace room, should be laid across it to prevent the tracking of dirt to the upper rooms, and these little walks must be swept and kept free from dirt and dust. If the cellar is floored with boards, the flooring should be raised sufficiently to allow free circulation of air beneath it; but the only strictly sanitary flooring is of concrete, six inches thick, covered from wall to wall with Portland or other good cement. Cellars, being below the street, and therefore receiving some of the surface drainage, are prone to dampness, and are easily contaminated by leakage from drains and sewers, and other filth communicated to them through the soil. These conditions are largely counteracted by the concrete and cement flooring, which also bars the entrance o ants and other vermin. The communication o damp cellar air, polluted by noxious gases from sewers and decaying vegetable matter, to the upper parts of the house is responsible for many an other wise unexplainable case of rheumatism, consume tion, typhoid, and other diseases, and any outla; of time and money which can render the cella wholesome and immune to ravages of agents es ternal and beyond our control, must not be grudged