"I accept all your explanations" I said, "and Saknussemm is right. He found out the entrance to the bowels of the earth, he has indicated correctly, but that he or anyone else ever followed up the discovery is madness to suppose." "Why so, young man?" "All scientific teaching, theoretical and practical, shows it to be impossible." "I care nothing for theories," retorted my uncle. "But is it not well-known that heat increases one degree for every seventy feet you descend into the earth? Which gives a fine idea of the central heat. All the matters which compose the globe are in a state of incandescence; even gold, platinum, and the hardest rocks are in a state of fusion. What would become of us?" "Don't be alarmed at the heat, my boy." "How so?" "Neither you nor anybody else know anything about the real state of the earth's interior. All modern experiments tend to explode the older theories. Were any such heat to exist, the upper crust of the earth would be shattered to atoms, and the world would be at an end." A long, learned and not uninteresting discussion followed, which ended in this wise: "I do not believe in the dangers and difficulties which you, Henry, seem to multiply; and the only way to learn, is like Arne Saknussemm, to go and see." "Well," cried I, overcome at last, "let us go and see. Though how we can do that in the dark is another mystery." "Fear nothing. We shall overcome these, and many other difficulties. Besides, as we approach the centre, I expect to find it luminous--" "Nothing is impossible." "And now that we have come to a thorough understanding, not a word to any living soul. Our success depends on secrecy and dispatch." Thus ended our memorable conference, which roused a perfect fever in me. Leaving my uncle, I went forth like one possessed. Reaching the banks of the Elbe, I began to think. Was all I had heard really and truly possible? Was my uncle in his sober senses, and could the interior of the earth be reached? Was I the victim of a madman, or was he a discoverer of rare courage and grandeur of conception? To a certain extent I was anxious to be off. I was afraid my enthusiasm would cool. I determined to pack up at once. At the end of an hour, however, on my way home, I found that my feelings had very much changed. "I'm all abroad," I cried; "'tis a nightmare--I must have dreamed it." At this moment I came face to face with Gretchen, whom I warmly embraced. "So you have come to meet me," she said; "how good of you. But what is the matter?" Well, it was no use mincing the matter, I told her all. She listened with awe, and for some minutes she could not speak. "Well?" I at last said, rather anxiously. "What a magnificent journey. If I were only a man! A journey worthy of the nephew of Professor Hardwigg. I should look upon it as an honor to accompany him." "My dear Gretchen, I thought you would be the first to cry out against this mad enterprise."