His combinations I knew now were useless, I having discovered the one only clue. For three mortal hours he continued without speaking a word, without raising his head, scratching, rewriting, calculating over and over again. I knew that in time he must hit upon the right phrase. The letters of every alphabet have only a certain number of combinations. But then years might elapse before he would arrive at the correct solution. Still time went on; night came, the sounds in the streets ceased--and still my uncle went on, not even answering our worthy cook when she called us to supper. I did not dare to leave him, so waved her away, and at last fell asleep on the sofa. When I awoke my uncle was still at work. His red eyes, his pallid countenance, his matted hair, his feverish hands, his hectically flushed cheeks, showed how terrible had been his struggle with the impossible, and what fearful fatigue he had undergone during that long sleepless night. It made me quite ill to look at him. Though he was rather severe with me, I loved him, and my heart ached at his sufferings. He was so overcome by one idea that he could not even get in a passion! All his energies were focused on one point. And I knew that by speaking one little word all this suffering would cease. I could not speak it. My heart was, nevertheless, inclining towards him. Why, then, did I remain silent? In the interest of my uncle himself. "Nothing shall make me speak," I muttered. "He will want to follow in the footsteps of the other! I know him well. His imagination is a perfect volcano, and to make discoveries in the interests of geology he would sacrifice his life. I will therefore be silent and strictly keep the secret I have discovered. To reveal it would be suicidal. He would not only rush, himself, to destruction, but drag me with him." I crossed my arms, looked another way and smoked--resolved never to speak. When our cook wanted to go out to market, or on any other errand, she found the front door locked and the key taken away. Was this done purposely or not? Surely Professor Hardwigg did not intend the old woman and myself to become martyrs to his obstinate will. Were we to be starved to death? A frightful recollection came to my mind. Once we had fed on bits and scraps for a week while he sorted some curiosities. It gave me the cramp even to think of it! I wanted my breakfast, and I saw no way of getting it. Still my resolution held good. I would starve rather than yield. But the cook began to take me seriously to task. What was to be done? She could not go out; and I dared not.