| Show SECURE SUPPLY OF FRESH AIR necessary vent gators can be put in with L atle trouble where steam heat Is installed ac cording to suburban life ventilation is especially needed for the absence ot of flues and open fireplaces deprives the rooms of a constant source of pure air and architects are often negligent in supplying efficient substitutes for them when building a house it Is 1 very easy to have at least one open grating communicating with the out side air placed at the highest ble point in every room with a flap if desired to prevent this outlet becoming an inlet but even when the house is built without these necessary ventilators they can be easily made with very little expense or trouble perhaps the simplest method of providing a constant inlet tor for a room ia is to have a counterpart of the lower rail rall of the sash frame made with upper and lower surfaces parallel when this Is put in its place and the win dow shut down on it air comes in readily at the junction of the upper and lower frames and at a height which prevents those sitting in the room from feeling any draught |