Kienze and I usually slept at different times; and it was during my sleep, about 5 A .M., July 4, that the general mutiny broke loose. The six remaining pigs of seamen, suspecting that we were lost, had suddenly burst into a mad fury at our refusal to surrender to the Yankee battleship two days before, and were in a delirium of cursing and destruction. They roared like the animals they were, and broke instruments and furniture indiscriminately; screaming about such nonsense as the curse of the ivory image and the dark dead youth who looked at them and swam away. Lieutenant Kienze seemed paralyzed and inefficient, as one might expect of a soft, womanish Rhinelander. I shot all six men, for it was necessary, and made sure that none remained alive.
We expelled the bodies through the double hatches and were alone in the U-29. Kienze seemed very nervous, and drank heavily. It was decided that we remain alive as long as possible, using the large stock of provisions and chemical supply of oxygen, none of which had suffered from the crazy antics of those swine-hound seamen. Our compasses, depth gauges, and other delicate instruments were ruined; so that henceforth our only reckoning would be guess work, based on our watches, the calendar, and our apparent drift as judged by any objects we might spy through the portholes or from the conning tower. Fortunately we had storage batteries still capable of long use, both for interior lighting and for the searchlight. We often cast a beam around the ship, but saw only dolphins, swimming parallel to our own drifting course. I was scientifically interested in those dolphins; for though the ordinary Delphinus delphis is a cetacean mammal, unable to subsist without air, I watched one of the swimmers closely for two hours, and did not see him alter his submerged condition.
With the passage of time Kienze and I decided that we were still drifting south, meanwhile sinking deeper and deeper. We noted the marine fauna and flora, and read much on the subject in the books I had carried with.me for spare moments. I could not help observing, however, the inferior scientific knowledge of my companion. His mind was not Prussian, but given to imaginings and speculations which have no value. The fact of our coming death affected him curiously, and he would frequently pray in remorse over the men, women, and children we had sent to the bottom; forgetting that all things are noble which serve the German state. After a time he became noticeably unbalanced, gazing for hours at his ivory image and weaving fanciful stories of the lost and forgotten things under the sea. Sometimes, as a psychological experiment, I would lead him on in the wanderings, and listen to his endless poetical quotations and tales of sunken ships. I was very sorry for him, for I dislike to see a German suffer; but he was not a good man to die with. For myself I was proud, knowing how the Fatherland would revere my memory and how my sons would be taught to be men like me.
On August 9, we espied the ocean floor, and sent a powerful beam from the searchlight over it. It was a vast undulating plain, mostly covered with seaweed, and strewn with the shells of small mollusks. Here and there were slimy objects of puzzling contour, draped with weeds and encrusted with barnacles, which Kienze declared must be ancient ships lying in their graves. He was puzzled by one thing, a peak of solid matter, protruding above the oceanbed nearly four feet at its apex; about two feet thick, with flat sides and smooth upper surfaces which met at a very obtuse angle. I called the peak a bit of outcropping rock, but Kienze thought he saw carvings on it. After a while he began to shudder, and turned away from the scene, as if frightened; yet could give no explanation save that he was overcome with the vastness, darkness, remoteness, antiquity, and mystery of the oceanic abysses. His mind was tired, but I am always a German, and was quick to notice two things: that the U-29 was standing the deep-sea pressure splendidly, and that the peculiar dolphins were still about us, even at a depth where the existence of high organisms is considered impossible by most naturalists. That I had previously overestimated our depth, I was sure; but none the less we must still have been deep enough to make these phenomena remarkable. Our southward speed, as gauged by the ocean floor, was about as I had estimated from the organisms passed at higher levels.
It was at 3:15 PM., August 12, that poor Kienze went wholly mad. He had been in the conning tower using the searchlight when I saw him bound into the library compartment where I sat reading, and his face at once betrayed him. I will repeat here what he said, underlining the words he emphasized: "He is calling! He is calling! I hear him! We must go!" As he spoke he took his ivory image from the table, pocketed it, and seized my arm in an effort to drag me up the companionway to the deck. In a moment I understood that he meant to open the hatch and plunge with me into the water outside, a vagary of suicidal and homicidal mania for which I was scarcely prepared. As I hung back and attempted to soothe him he grew more violent, saying: "Come now – do not wait until later; it is better to repent and be forgiven than to defy and be condemned." Then I tried the opposite of the soothing plan, and told him he was mad – pitifully demented. But he was unmoved, and cried: "If I am mad, it is mercy. May the gods pity the man who in his callousness can remain sane to the hideous end! Come and be mad whilst he still calls with mercy!"
This outburst seemed to relieve a pressure in his brain; for as he finished he grew much milder, asking me to let him depart alone if I would not accompany him. My course at once became clear. He was a German, but only a Rhinelander and a commoner; and he was now a potentially dangerous madman. By complying with his suicidal request I could immediately free myself from one who was no longer a companion but a menace. I asked him to give me the ivory image before he went, but this request brought from him such uncanny laughter that I did not repeat it. Then I asked him if he wished to leave any keepsake or lock of hair for his family in Germany in case I should be rescued, but again he gave me that strange laugh. So as he climbed the ladder I went to the levers and, allowing proper time-intervals, operated the machinery which sent him to his death. After I saw that he was no longer in the boat I threw the searchlight around the water in an effort to obtain a last glimpse of him since I wished to ascertain whether the water-pressure would flatten him as it theoretically should, or whether the body would be unaffected, like those extraordinary dolphins. I did not, however, succeed in finding my late companion, for the dolphins were massed thickly and obscuringly about the conning tower.
That evening I regretted that I had not taken the ivory image surreptitiously from poor Kienze's pocket as he left, for the memory of it fascinated me. I could not forget the youthful, beautiful head with its leafy crown, though I am not by nature an artist. I was also sorry that I had no one with whom to converse. Kienze, though not my mental equal, was much better than no one. I did not sleep well that night, and wondered exactly when the end would come. Surely, I had little enough chance of rescue.
The next day I ascended to the conning tower and commenced the customary searchlight explorations. Northward the view was much the same as it had been all the four days since we had sighted the bottom, but I perceived that the drifting of the U-29 was less rapid. As I swung the beam around to the south, I noticed that the ocean floor ahead fell away in a marked declivity, and bore curiously regular blocks of stone in certain places, disposed as if in accordance with definite patterns. The boat did not at once descend to match the greater ocean depth, so I was soon forced to adjust the searchlight to cast a sharply downward beam. Owing to the abruptness of the change a wire was disconnected, which necessitated a delay of many minutes for repairs; but at length the light streamed on again, flooding the marine valley below me.