He replied, “Our opinion is this: The volcanic action in the moon toward its close and final cessation, was enormous. The planet had already been completely honeycombed by former convulsions and the seas had poured themselves into the underground openings, until there was almost as much water below the surface as above. This water kept up a continual contention with the melted interior, resulting in still greater explosions, sending out enormous quantities of volcanic matter, forming cones in some cases twenty-five miles high and over 100 miles in diameter. The enormous weight of these volcanic cones in many cases proved too great to be supported by the crust, that separated them from the interior cavities their materials had been blown out of, and so they broke through—that is the central part of the cones broke through, leaving a margin of their bases all around, standing like the walls of a crater. But these are not the original craters, as you can see. If they were, they would be on top of elevated cones of enormous height, which they are not.” “This view appears to me very plausible and I feel the more interested in the subject, because the idea constantly impresses itself upon me, that the earth is repeating the history of the moon. According to our theories of evolution the two bodies separated from each other, when they were in the condition of hot expanded gases, and as the moon contained only 1/81 part as much matter as the earth, it cooled down and became a habitable world, many millions of years before the earth. Since you have been talking to me, the impression has constantly grown upon me, that your moon history is really an anticipation of our own, and it becomes the more interesting on that account.” His eyes expressed extreme satisfaction, as he replied that he was glad that I had seen that point. “We have in one of the provinces of the interior continent, an immense university, devoted to the study of mundane affairs, past, present and future. The duty is assigned me of holding a professorship in this university, in the college of ‘Mundane Prognostication’. As this college has been in operation for over 100,000 years, we have had abundant opportunity to verify our system of prognostication, and you would be surprised at the accuracy with which our predictions have been realized in your history. Of course, we could have done nothing, but for the basis our own history gave us to work on.” “Well,” said I, “I can’t say that I am sorry to know that my time will be out long before the earth reaches the conditions that makes it necessary for the inhabitants to retreat underground. These spaces below must indeed be queer places to live in, for it don’t seem like they would be exposed to storms, as if out of doors, and yet not cosy and homelike, as if in a house, and I don’t see how they can be otherwise than cold damp and gloomy—that is, viewed from the stand point of earth. Am I right?”