All this is not to be wondered at when you remember the inert characteristics of nitrogen. There are in some localities natural springs which give out slender streams of oxygen. You will learn by and by what use the Saturnians make of this dangerous gas, which, as you recollect, constitutes about one fifth of your own atmosphere. Saturn has large lead mines, but no other metal is found on this planet. The inhabitants have nothing else to make tools of, except stones and shells. The mechanical arts have therefore made no great progress among them. Chopping down a tree with a leaden axe is necessarily a slow process. So far as the Saturnians can be said to have any pride in anything, it is in the absolute level which characterizes their political and social order. They profess to be the only true republicans in the solar system. The fundamental articles of their Constitution are these: All Saturnians are born equal, live equal, and die equal. All Saturnians are born free,--free, that is, to obey the rules laid down for the regulation of their conduct, pursuits, and opinions, free to be married to the person selected for them by the physiological section of the government, and free to die at such proper period of life as may best suit the convenience and general welfare of the community. The one great industrial product of Saturn is the bread-root. The Saturnians find this wholesome and palatable enough; and it is well they do, as they have no other vegetable. It is what I should call a most uninteresting kind of eatable, but it serves as food and drink, having juice enough, so that they get along without water. They have a tough, dry grass, which, matted together, furnishes them with clothes sufficiently warm for their cold-blooded constitutions, and more than sufficiently ugly.