Kuila repaired to the room given him--identical to all other living rooms in Central City. In measurement the room was fifteen by fifteen and twelve feet high. At first glance the walls were a buff color, but after a few moments in the room under the glow of the light that appeared to emanate from the walls themselves it was evident that they were changing color. A pink flush was creeping over them, a pink that deepened to a rose to be saved from red by the appearance of another hue, a delicate blue, that, from dark blue, became a light green and so through the spectrum of colors. Ages ago Man had discovered the effects of color upon his nervous system and knew that the monotony of any one shade would eventually drive him mad. Therefore, as one by one the colors of Nature disappeared around him, he set about producing a riot of color about him. Everything he made was colored with a pigment which in the light brought out the seven colors and all the delicate shades between them. Even clothes had the faculty to change minutely. In shape the room was square, and yet the corners were built with a curve that gave the room a graceful line. Its furnishings were of the simplest. There were low couches padded with a soft felt-like material, and like the walls, it changed color continually. These couches, fashioned so as to give perfect ease to the body, were shaped to its curves and angularities, and were used both as beds as well as for relaxation, serving for the awkward chair of the ancient. Several low tables, hardly a foot high, served as desks or to hold a few simple though colorful ornaments. One wall of the room was given almost entirely over to a large mirror-like surface that gave no reflection. But by touching a small lever on its side it gave the onlooker all the news of the world--like the news-reel of old, by which ages ago one might sit back and watch the progress of the world. A simple attachment gave forth sound so that music, lectures and various sound arrangements came to the listener. Now men seldom used this medium, for, in a world that comprised only two cities and a few outposts, there was little news to broadcast besides that which went by word of mouth or could be announced in the city streets and auditoriums.