“All plastic bodies, like a planet, etc., assume a spherical form, because all particles equally distant from the center are equally attracted toward the center; and a sphere is the only ‘solid’ in which these conditions can be fulfilled. A sphere formed from the breaking up and concentrating of a broad concentric ring, like the rings out of which planets and moons are formed, must necessarily rotate on its axis, because the particles which compose the concentric ring had an unequal revolutionary velocity. Those particles of the ring nearest the center had a less angular velocity than those particles farthest away from the center. “Just as these few bodies constituting our solar system of which I have spoken _were_ and are affected, so, we believe, have been or will all heavenly bodies--moons, planets, suns and stars--in all parts of the universe be affected during the lapse of untold ages. “From this brief explanation, you will readily see that the Marsites’ conception of creation and _your_ evolution theory are almost exactly identical. Observation and experience have led the Marsites and the mundane inhabitants to similar beliefs on these points of creation and formation. “It is getting late, and I fear that I shall be intruding on our time which should be assigned for rest and sleep,” said Mr. Midith. “I believe, as we have learned in our native home, that we ought to cultivate regular habits and try to live up to them.” “Mr. Midith, I think you are just an excellent teacher!” exclaimed little Celestine. “You _must_ surely stop with us while you are in our town. I am going to ask you ever so many more questions about your books, animals, towns, playmates and a thousand other things.” “Yes, Mr. Midith,” said Rev. Dudley; “if you consider all those things wrong and cruel that you mentioned to us some time ago, I shall be much pleased to know how you get along without them, and how you got rid of them if you once had them like you now find them here.” “To do without them is much more simple than to have them, as you shall see further on,” replied Mr. Midith. “Of course, we passed through all the stages of physical and intellectual evolution that you have passed through and are now in, and we have also gone much farther than you have thus far. At one time our social and industrial system was afflicted with all your present evils and cruelty. We were in succession cannibals, savages, semi-civilized and are now what we call civilized. What we will be next we can not tell.” CHAPTER IV. HOME AND FAMILY. In the evening when we retired, it was still raining, but the next morning greeted us with a bright, pleasant sunshine. All nature seemed to be clothed in her best garment. The faces at Uwins’ appeared to be as pleasing to the sight after a refreshing night’s rest as the verdant foliage, refreshed by the warm rain and delightful sunshine.