It is impossible to have a beautiful room if the rug seems to rise up and smite you as you enter. Persian rugs with their conventional floral designs should not be used with the marked color and geometrical designs of Caucasian rugs. These points are important to remember and follow, for otherwise unity of scheme for the room will be impossible. If one has several fine rugs well matched in color value and design they should be placed with a due regard to the shape of the room and the position of the furniture. A rug placed cat-a-cornered breaks up the structural plan of the room and makes it appear smaller than it really is. The new lines formed are at odds with the lines of the walls and interfere with the sense of space by stopping the eye in its instinctive journey to the boundary of things. Oriental rugs should be tried if possible in the rooms in which they are to be used before the final choice is made, and one must always try the rug with the light falling across the nap and also with the nap, for one way makes the rug lighter and the other darker, and one of the two may be just what is wanted. If one owns a rug which seems far too bright to use it can be toned down, but the owner must take the risk of its being spoiled in the process. To me it does not seem a great risk, because if the rug is so bright that it is absolutely nerve-destroying and useless, and there is a chance that for a small sum it can be made charming, why not take it? I have never heard of one failing, but I suppose some of them must or the stipulation would not be made. If an Oriental rug is used it should give the keynote for the color scheme, and the design of the rug will decide whether there can be any figured material used in the room. It is far easier to build up a scheme from a satisfactory rug than it is to try to fit one into a room which is otherwise finished. One's field of choice is much wider. Samples of wallpaper, curtain material and furniture coverings should always be tried with the rugs, whether Oriental or plain in color, for the scheme of a room must be worked out as a whole, not piece-meal. Each room must be considered in relation to the other rooms near it, because, although it may be beautiful in itself, if it does not harmonize with the connecting rooms the whole effect will be a failure. Vistas from one room to another should be alluring and charming; there should be no violent and clashing contrasts of color or styles of furniture or sudden change in the scale of furnishings. One room cannot shake off its relationship to the rest of the house and be a success, and floor coverings must bear their full share of responsibility in making the whole house beautiful. _The Treatment of Walls_