heated words he used were, in reality, a sentence of death upon himself. For my own part, I regret that I lost my temper, and told the American his business methods did not commend themselves to me. Perhaps he did not feel the sting of this; indeed, I feel certain he did not, for, unknowingly, he saved my life. Be that as it may, he showed no resentment, but immediately asked me out to drink with him, an offer I was compelled to refuse. But I am getting ahead of my story. Indeed, being unaccustomed to writing, it is difficult for me to set down events in their proper sequence. The American called upon me several times after I told him our house could not deal with him. He got into the habit of dropping in upon me unannounced, which I did not at all like, but I gave no instructions regarding his intrusions, because I had no idea of the extremes to which he was evidently prepared to go. One day, as he sat near my desk reading a paper, I was temporarily called from the room. When I returned I thought he had gone, taking his machine with him, but a moment later I was shocked to hear his high nasal tones in Sir John's room alternating with the deep notes of my chief's voice, which apparently exercised no such dread upon the American as upon those who were more accustomed to them. I at once entered the room, and was about to explain to Sir John that the American was there through no connivance of mine, when my chief asked me to be silent, and, turning to his visitor, gruffly requested him to proceed with his interesting narration. The inventor needed no second invitation, but went on with his glib talk, while Sir John's frown grew deeper, and his face became redder under his fringe of white hair. When the American had finished, Sir John roughly bade him begone, and take his accursed machine with him. He said it was an insult for a person with one foot in the grave to bring a so-called health invention to a robust man who never had a day's illness, I do not know why he listened so long to the American, when he had made up his mind from the first not to deal with him, unless it was to punish me for inadvertently allowing the stranger to enter. The interview distressed me exceedingly, as I stood there helpless, knowing Sir John was becoming more and more angry with every word the foreigner uttered, but, at last, I succeeded in drawing the inventor and his work into my own room and closing the door. I sincerely hoped I would never see the American again, and my wish was gratified. He insisted on setting his machine going, and placing it on a shelf in my room. He asked me to slip it into Sir John's room some foggy day and note the effect. The man said he would call again, but he never did.
VI.—HOW THE SMOKE HELD DOWN THE FOG.
It was on a Friday that the fog came down upon us. The weather was very fine up to the middle of November that autumn. The fog did not seem to have anything unusual about it. I have seen many worse fogs than that appeared to be. As day followed day, however, the atmosphere became denser and darker, caused, I suppose, by the increasing volume of coal- smoke poured out upon it. The peculiarity about those seven days was the intense stillness of the air. We were, although we did not know it, under an air-proof canopy, and were slowly but surely exhausting the life-giving oxygen around us, and replacing it by poisonous carbonic acid gas. Scientific men have since showed that a simple mathematical calculation might have told us exactly when the last atom of oxygen would have been consumed; but it is easy to be wise after the event. The body of the greatest mathematician in England was found in the Strand. He came that morning from Cambridge. During the fog there was always a marked increase in the death rate, and on this occasion the increase was no greater than usual until the sixth day. The newspapers on the morning of the seventh were full of startling statistics, but at the time of going to press the full significance of the alarming figures was not realized. The editorials of the morning papers on the seventh day contained no warning of the calamity that was so speedily to follow their appearance. I lived then at Ealing, a Western suburb of London, and came every morning to Cannon Street by a certain train. I had up to the sixth day experienced no inconvenience from the fog, and this was largely due, I am convinced, to the unnoticed operations of the American machine.
On the fifth and sixth days Sir John did not come to the City, but he was in his office on the seventh. The door between his room and mine was closed. Shortly after ten o'clock I heard a cry in his room, followed by a heavy fall. I opened the door, and saw Sir John lying face downwards on the floor. Hastening towards him, I felt for the first time the deadly effect of the deoxygenized atmosphere, and before I reached him I fell first on one knee and then headlong. I realized that my senses were leaving me, and instinctively crawled back to my own room, where the oppression was at once lifted, and I stood again upon my feet, gasping. I closed the door of Sir John's room, thinking it filled with poisonous fumes, as, indeed, it was. I called loudly for help, but there was no answer. On opening the door to the main office I met again what I thought was the noxious vapor. Speedily as I closed the door, I was impressed by the intense silence of the usually busy office, and saw that some of the clerks were motionless on the floor, and others sat with their heads on their desks as if asleep. Even at this awful moment I did not realize that what I saw was common to all London, and not, as I imagined, a local disaster, caused by the breaking of some carboys in our cellar. (It was filled with chemicals of every kind, of whose properties I was ignorant, dealing as I did with the accountant, and not the scientific side of our business.) I opened the only window in my room, and again shouted for help. The street was silent and dark in the ominously still fog, and what now froze me with horror was meeting the same deadly, stifling atmosphere that was in the rooms. In falling I brought down the window, and shut out the poisonous air. Again I revived, and slowly the true state of things began to dawn upon me.
I was in an oasis of oxygen. I at once surmised that the machine on my shelf was responsible for the existence of this oasis in a vast desert of deadly gas. I took down the American's machine, fearful in moving it that I might stop its working. Taking the mouthpiece between my lips I again entered Sir John's room, this time without feeling any ill effects. My poor master was long beyond human help. There was evidently no one alive in the building except myself. Out in the street all was silent and dark. The gas was extinguished, but here and there in shops the incandescent lights were still weirdly burning, depending, as they did, on accumulators, and not on direct engine power. I turned automatically towards Cannon Street Station, knowing my way to it even if blindfolded, stumbling over bodies prone on the pavement, and in crossing the street I ran against a motionless 'bus, spectral in the fog, with dead horses lying in front, and their reins dangling from the nerveless hand of a dead driver. The ghostlike passengers, equally silent, sat bolt upright, or hung over the edge boards in attitudes horribly grotesque.
VII.—THE TRAIN WITH ITS TRAIL OF THE DEAD.
If a man's reasoning faculties were alert at such a time (I confess mine were dormant), he would have known there could be no trains at Cannon Street Station, for if there was not enough oxygen in the air to keep a man alive, or a gas-jet alight, there would certainly not be enough to enable an engine fire to burn, even if the engineer retained sufficient energy to attend to his task. At times instinct is better than reason, and it proved so in this case. The railway from Ealing in those days came under the City in a deep tunnel. It would appear that in this underground passage the carbonic acid gas would first find a resting-place on account of its weight; but such was not the fact. I imagine that a current through the tunnel brought from the outlying districts a supply of comparatively pure air that, for some minutes after the general disaster, maintained human life. Be this as it may, the long platforms of Cannon Street Underground Station presented a fearful spectacle. A train stood at the down platform. The electric lights burned fitfully. This platform was crowded with men, who fought each other like demons, apparently for no reason, because the train was already packed as full as it could hold. Hundreds were dead under foot, and every now and then a blast of foul air came along the tunnel, whereupon hundreds more would relax their grips, and succumb. Over their bodies the survivors fought, with continually thinning ranks. It seemed to me that most of those in the standing train were dead. Sometimes a desperate body of fighters climbed over those lying in heaps and, throwing open a carriage door, hauled out passengers already in, and took their places, gasping. Those in the train offered no resistance, and