The human life of Jupiter is found in certain belts where the crust of the planet has been hardened for several thousand years. The people have risen from rude, primitive conditions to a state of splendid civilization. In size they are colossal giants, averaging twenty-five feet in height. Their two powerful arms extend from what we would call the hips, and no one would imagine with what facility these giants use them. After extended observation, I was almost tempted to wonder why our arms were placed so high on the body. These Jupiterites are more handsome than the people on the Moon or Mars, and their faces shine with a superior intelligence. Instead of hair on the head, they have something unknown to our world, quite similar in appearance to wool. Their two eyes blaze like balls of fire, making one of the giants appear like a fiersome though not repulsive monster. The most unusual feature about the face is the peculiarity of the chin and forehead. Each is covered with convolutions of an insensible, rubber-like membrane. The people of Jupiter excel in mechanical skill. They build houses, but not by long, tedious days of painstaking labor. Such things as plaster and paint are unknown. A Jupiterite can purchase, from one of the mammoth structural factories, house sides, house ends, house floors or partitions, after any general design he wishes, and have them trimmed in any style his fancy suggests. The materials used are non-combustible and water-proof, and will wear indefinitely. These houses can be put together in a few days and the trimmings adjusted in less than two weeks, unless the structure is very elaborate. Nearly all of their house furniture is also non-combustible, and no one has ever conceived the idea of forming a fire insurance company, simply because there is no need for one. As the people are so much larger than we, so are all things relatively larger than we see them in our world. Wagons and carriages and cars appear as if they were made for mastodons. I saw one of their largest bridges spanning a molten lake. Aside of it the East River bridge would be a dwarf, either in height or length. It is certainly thrilling to step into a world where all things are so gigantic. At times a feeling of insignificance crept over me, but I took courage when I thought that a man's greatness consists in his mental powers and not in his physical bulk, for it is true that the fifty ounces of brain in the skull of a Newton have accomplished more marvels than the ten pounds of brain-matter found in the most cultured Jupiterite. We must give the people of Jupiter credit for exercising a large amount of common sense. In many ways they are more practical than we, and this is quite as noticeable in their language as in any other respect. They have one simple language for the whole globe and in its use they are all agreed. Their vocabulary is small because they have not yet branched out into the infinite varieties of manufacture and invention.