"When I woke up shortly after midnight his warning came to my mind with its hint of danger that seemed, in the starred darkness, real enough to make me get up for the purpose of having a look round. On the hill a big fire burned, illuminating fitfully a crooked corner of the station-house. One of the agents with a picket of a few of our blacks, armed for the purpose, was keeping guard over the ivory; but deep within the forest, red gleams that wavered, that seemed to sink and rise from the ground amongst confused columnar shapes of intense blackness, showed the exact position of the camp where Mr. Kurtz's adorers were keeping their uneasy vigil. The monotonous beating of a big drum filled the air with muffled shocks and a lingering vibration. A steady droning sound of many men chanting each to himself some weird incantation came out from the black, flat wall of the woods as the humming of bees comes out of a hive, and had a strange narcotic effect upon my half-awake senses. I believe I dozed off leaning over the rail, till an abrupt burst of yells, an overwhelming outbreak of a pent-up and mysterious frenzy, woke me up in a bewildered wonder. It was cut short all at once, and the low droning went on with an effect of audible and soothing silence. I glanced casually into the little cabin. A light was burning within, but Mr. Kurtz was not there.

"I think I would have raised an outcry if I had believed my eyes. But I didn't believe them at first--the thing seemed so impossible. The fact is I was completely unnerved by a sheer blank fright, pure abstract terror, unconnected with any distinct shape of physical danger. What made this emotion so overpowering was--how shall I define it?--the moral shock I received, as if something altogether monstrous, intolerable to thought and odious to the soul, had been thrust upon me unexpectedly. This lasted of course the merest fraction of a second, and then the usual sense of commonplace, deadly danger, the possibility of a sudden onslaught and massacre, or something of the kind, which I saw impending, was positively welcome and composing. It pacified me, in fact, so much, that I did not raise an alarm.

"There was an agent buttoned up inside an ulster and sleeping on a chair on deck within three feet of me. The yells had not awakened him; he snored very slightly; I left him to his slumbers and leaped ashore. I did not betray Mr. Kurtz--it was ordered I should never betray him--it was written I should be loyal to the nightmare of my choice. I was anxious to deal with this shadow by myself alone,--and to this day I don't know why I was so jealous of sharing with anyone the peculiar blackness of that experience.