"I breathed more freely, notwithstanding that the gas, having partially diffused upwards to the level of the opening, now began to filter through to my side. I waited a minute or two listening to the breathing of the two murderers as it grew moment by moment more stertorous and irregular, and then, having filled up the stove, went down to the first floor and sat awhile by the open window to breathe the relatively fresh air.

"All was now quiet in the street. No doubt the guard had been strengthened, but I did not look out. It was as well not to be seen at that hour in the morning. As I sat by the window, I thought about the two men in that deadly room. It was a thousand pities that they should be lost to science. Yet there was no help for it. Even if I had decided to acquire them I could not have done so, for, by the very worst of luck, I had used up my last barrel and had neglected to lay in a fresh stock. Besides, of course, the police knew they were there.

"I rested for half an hour or so and then went upstairs to see how matters were progressing. No light now came through the opening in the wall, for the paraffin lamp had either burned out or been extinguished by the accumulating gas. I listened attentively. The harsh, metallic ticking of a cheap American clock was plainly, even intrusively, audible; otherwise no sound came from that chamber of death.

"I drew the sliding panel right back, held aside the dangling garments, and, climbing through into the cupboard, pushed open the doors. A faint glimmer of light from the street made dimly visible the mattress on the floor and two indistinct dark shapes stretched on it. I stepped quickly across the room, breathing as little as possible of the unspeakably foul air, and struck a wax match. It burned dimly and smokily, but showed me the two murderers, lying in easy postures, their faces livid and ghastly in hue but peaceful enough in expression. When I lowered the match, its flame dwindled and turned blue, and at eighteen inches from the floor it went out as if dipped in water. At that height the heavy gas must have been nearly pure. The room was a veritable Grotto del Cane.

"I stooped quickly, holding my breath, and felt the wrists of the two men. They were chilly to the touch and no vestige of pulse was perceptible. I shook them both vigorously, but failed to elicit any responsive movement. They were quite limp and inert and I had no doubt that they were dead. My work was done. The policemen were now safe, whatever follies they might commit; and it only remained for me to remove the traces of the fairy godmother who had labored through the night to save them from their own exuberant courage.

"Passing back through the opening, I drew away the now unnecessary pipe, closed the two panels, and carried the little stove down to my bedroom. I looked at the unruffled bed—mute but eloquent witness to the night's activity—and deciding as a measure of prudence to give it the appearance of having been slept in, took off my boots and crept in between the sheets. But I was not in the least degree drowsy. Quite the contrary. I was all agog to see the end of the comedy in which I had, all unknown, taken the leading part; so that after tossing about for a few minutes I sprang out of bed, resumed my boots and poured out a basin full of water to refresh myself by a wash.

"And now once more observe the strangely indirect lines of causation. The towels on the horse were damp and none too clean. I flung them into the dirty-linen basket and dragged open the drawer in which the clean ones were kept. It was the bottom drawer of a cheap pine chest that I had bought in Whitechapel High Street. That chest of drawers was of unusual size; it was four feet wide by nearly five feet high, and the two bottom drawers were each fully eighteen inches deep, and were far larger than was necessary for my modest stock of household linen.

"I pulled out the bottom drawer, then, and as its great cavity yawned before me, it offered a not unnatural suggestion. The length of an average man's head and trunk is under thirty-six inches. Allowing a few inches more for his feet and ankles, a cavity forty-eight inches long is amply sufficient for his accommodation. Flinging out the towels and sheets that lay in the drawer, I got in and lay down with my knees drawn up. Of course there was room and to spare.

"It was an interesting fact but not very applicable to present circumstances. Still, it set me thinking. I went into the front room and glanced out of the open window. A faint lightening of the murky sky heralded the approach of dawn, and from afar came the murmur of commencing traffic out in High Street. I was about to turn away when my ear caught a new and unusual sound rising above that distant murmur; the measured tread of feet mingling with the clatter of horses' hoofs and a heavy, metallic rumbling. I looked out cautiously in the direction whence the sounds came and was positively stupefied with amazement. At the end of the street I saw, by the light of the lamps, a company of soldiers appearing round the corner and taking up a position across the road. I watched breathlessly. Soon, at a sign from the officer, the men spread mats on the muddy ground and lay down on them, and then appeared a train of horses, dragging a field-piece or quick-firing gun, which was halted behind the infantry and unlimbered. A minute later the black shapes of a number of soldiers appeared on the sky-line as they crept along the parapets of the opposite houses where, save for their heads and the barrels of their rifles, they presently disappeared.

"It seemed that I had misjudged the police in the matter of caution. It almost seemed that my labors had been useless; for surely these portentous preparations indicated some masterpiece of strategy. What an anticlimax it would be when the defenders of the fort were found to be dead! But what a still greater anticlimax if they were not there at all!