I could not sleep Saturday night, and turned on the lights regardless of the future. It was annoying that the electricity should not last out the air and provisions. I revived my thoughts of euthanasia, and examined my automatic pistol. Toward morning I must have dropped asleep with the lights on, for I awoke in darkness yesterday afternoon to find the batteries dead. I struck several matches in succession, and desperately regretted the improvidence which had caused us long ago to use up the few candles we carried.

After the fading of the last match I dared to waste, I sat very quietly without a light. As I considered the inevitable end my mind ran over preceding events, and developed a hitherto dormant impression which would have caused a weaker and more superstitious man to shudder. The head of the radiant god in the sculptures on the rock temple is the same as that carven bit of ivory which the dead sailor brought from the sea and which poor Klenze carried back into the sea.

I was a little dazed by this coincidence, but did not become terrified. It is only the inferior thinker who hastens to explain the singular and the complex by the primitive short cut of supernaturalism. The coincidence was strange, but I was too sound a reasoner to connect circumstances which admit of no logical connection, or to associate in any uncanny fashion the disastrous events which had led from the Victory affair to my present plight. Feeling the need of more rest, I took a sedative and secured some more sleep. My nervous condition was reflected in my dreams, for I seemed to hear the cries of drowning persons, and to see dead faces pressing against the portholes of the boat. And among the dead faces was the living, mocking face of the youth with the ivory image.

I must be careful how I record my awaking today, for I am unstrung, and much hallucination is necessarily mixed with fact. Psychologically my case is most interesting, and I regret that it cannot be observed scientifically by a competent German authority. Upon opening my eyes my first sensation was an overmastering desire to visit the rock temple; a desire which grew every instant, yet which I automatically sought to resist through some emotion of fear which operated in the reverse direction. Next there came to me the impression of light amidst the darkness of dead batteries, and I seemed to see a sort of phosphorescent glow in the water through the porthole which opened toward the temple. This aroused my curiosity, for I knew of no deep-sea organism capable of emitting such luminosity. But before I could investigate there came a third impression which because of its irrationality caused me to doubt the objectivity of anything my senses might record. It was an aural delusion; a sensation of rhythmic, melodic sound as of some wild yet beautiful chant or choral hymn, coming from the outside through the absolutely sound-proof hull of the U-29. Convinced of my psychological and nervous abnormality, I lighted some matches and poured a stiff dose of sodium bromide solution, which seemed to calm me to the extent of dispelling the illusion of sound. But the phosphorescence remained, and I had difficulty in repressing a childish impulse to go to the porthole and seek its source. It was horribly realistic, and I could soon distinguish by its aid the familiar objects around me, as well as the empty sodium bromide glass of which I had had no former visual impression in its present location. The last circumstance made me ponder, and I crossed the room and touched the glass. It was indeed in the place where I had seemed to see it. Now I knew that the light was either real or part of an hallucination so fixed and consistent that I could not hope to dispel it, so abandoning all resistance I ascended to the conning tower to look for the luminous agency. Might it not actually be another U-boat, offering possibilities of rescue?

It is well that the reader accept nothing which follows as objective truth, for since the events transcend natural law, they are necessarily the subjective and unreal creations of my overtaxed mind. When I attained the conning tower I found the sea in general far less luminous than I had expected. There was no animal or vegetable phosphorescence about, and the city that sloped down to the river was invisible in blackness. What I did see was not spectacular, not grotesque or terrifying, yet it removed my last vestige of trust in my consciousness. For the door and windows of the undersea temple hewn from the rocky hill were vividly aglow with a flickering radiance, as from a mighty altar-flame far within.

Later incidents are chaotic. As I stared at the uncannily lighted door and windows, I became subject to the most extravagant visions—visions so extravagant that I cannot even relate them. I fancied that I discerned objects in the temple—objects both stationary and moving—and seemed to hear again the unreal chant that had floated to me when first I awaked. And over all rose thoughts and fears which centred in the youth from the sea and the ivory image whose carving was duplicated on the frieze and columns of the temple before me. I thought of poor Klenze, and wondered where his body rested with the image he had carried back into the sea. He had warned me of something, and I had not heeded—but he was a soft-headed Rhinelander who went mad at troubles a Prussian could bear with ease.

The rest is very simple. My impulse to visit and enter the temple has now become an inexplicable and imperious command which ultimately cannot be denied. My own German will no longer controls my acts, and volition is henceforward possible only in minor matters. Such madness it was which drove Klenze to his death, bareheaded and unprotected in the ocean; but I am a Prussian and a man of sense, and will use to the last what little will I have. When first I saw that I must go, I prepared my diving suit, helmet, and air regenerator for instant donning; and immediately commenced to write this hurried chronicle in the hope that it may some day reach the world. I shall seal the manuscript in a bottle and entrust it to the sea as I leave the U-29 forever.

I have no fear, not even from the prophecies of the madman Klenze. What I have seen cannot be true, and I know that this madness of my own will at most lead only to suffocation when my air is gone. The light in the temple is a sheer delusion, and I shall die calmly, like a German, in the black and forgotten depths. This daemoniac laughter which I hear as I write comes only from my own weakening brain. So I will carefully don my diving suit and walk boldly up the steps into that primal shrine; that silent secret of unfathomed waters and uncounted years.