Reon now left me, promising to return within an hour, in order that I might reach the observatory in due time. As I walked slowly among the tall palms, taking a path here and there at random and admiring the beautiful beds of flowers, some of which I recognized as flowers also indigenous to Earth, I noticed that all whom I met greeted me in the most cordial way, some pausing to say a few words. I saw the importance of saying whatever was prompted by the first appearance of the individual, and I found that I could thus join in a most enjoyable conversation with these charming people, with a knowledge of their names and the matters of interest to them. All were very enthusiastic about the lumaharp, and I anxiously awaited another number upon this wonderful instrument. As the paths I turned down were all strange to me, I judged that Almos was not familiar with the interior of this particular building, but as there were many gardens nearer the observatory, he would have no reason to visit this one, except on an occasion of this kind. Not realizing the enormous size of the building, I had wandered far from the entrance at which I was to meet Reon, and had decided to ask to be directed back, when suddenly I stopped, rooted to the ground, every nerve straining to catch a faint melodious sound that seemed to fill the air. No music on Earth could equal it! Before me arose a vision of beautiful flowers--flowers that had thoughts as beautiful as themselves, and that through the genius of a man poured forth their souls in a volume of melody, so beautiful as to beggar description. As Almos was perfectly familiar with this remarkable invention, a gradual comprehension of the wonderful genius of Sarraccus, its inventor, came to me. Tall, calm, and of dignified bearing; a man of great learning, but of few words; Sarraccus had won the love and admiration of all by his discovery of the regenerating rays that had given the people of Mars perpetual life and health. He it was who had discovered super-radium, and this wonderful power had, in time, been used by others until many important inventions had developed from it, such as the virator, the radioscope, the radiphone, illumination without expenditure of power or material, and several minor inventions, all of which, however, contributed greatly to the comfort and advancement of this great people. The aerenoid, one of his most important inventions, had made it possible to reach any part of the globe within an hour, and this, coming at the time of the great change in the social conditions on Mars, had expedited the movement to a wonderful extent by bringing the inhabitants of every quarter of the globe into daily contact with one another. So easy and rapid was this means of transit through the air, that cities and towns were soon abolished, and in the process of time, Mars attained the ideal, and became a World Beautiful--the magnificent estate of one large family.