After I had changed into dry clothes I stuffed myself with a good farm-house high tea. How do they manage it in these times of scarcity? Thoughts of starving German children did occur to me, but I am ashamed to confess that they did not spoil my meal. I sat down to read in the decrepit armchair by the fire. But the day of fresh air had made me drowsy, and I found myself just sitting and gazing at the bright embers. Curiously I had forgotten about my stone since the moment when I had arrived and put it on the mantelpiece. Now, with a little shock I remembered it, reached for it, and examined it in the light of the oil lamp.It still appeared to be just an ordinary stone, a little bit of some kind of igneous rock. Using my field-glass, back to front, as a magnifier, I still found nothing unusual about it. It was a commonplace medley of little nodules and crystals all jambed together, and weathered into a uniform greenish grey. Here and there I saw minute black marks that might perhaps be little holes, the mouths of microscopic caves. I thought of breaking the stone, to see what it was like inside; but no sooner had the idea occurred to me than I was checked by a wave of superstitious horror. Such an act, I felt, would have been sacrilege.I fell into a reverie about the stone's antiquity. How many millions of years, I wondered, had passed since its molten substance had congealed? For aeons it had lain waiting, a mere abstract volume, continuous with a vast bulk of identical rock. Then miners had blasted the rock, and brought the debris to the surface. And there it had lain, perhaps for a whole human generation, a mere moment of geological time. Well, what next? A sudden thought struck me. Why not let the little stone enjoy once more some measure of the heat that it had so long lacked? This time no horror stayed me. I threw the stone into the fire, into the glowing centre of the little furnace that my kind landlady had prepared for me on that frosty evening.The cold stone produced a dark patch in its fiery environment; but the fire was a hot one, and very soon the surrounding heat had re-invaded its lost territory. I watched with a degree of excitement that seemed quite unjustified. After a while the stone itself began to glow. I piled on fresh fuel, carefully leavitig a hole through which I could watch the stone. Presently it was almost as bright as the surrounding coal. After all those millions of years it was at last alive once more! Foolish thought! Of course it was not alive: and my excitement was ridiculous, childish. I must pull myself together. But awe, and unreasoning dread, still gripped rue.Suddenly a minute white flame appeared to issue from the stone itself. It grew, till it was nearly an inch tall; and stood for a moment, in the draught of the fire. It was the most remarkable flamelet that I had ever seen, a little incandescent leaf or seedling, or upstanding worm, leaning in the breeze. Its core seemed to be more brilliant than its surface, for the dazzlng interior was edged with a vague, yellowish aura. Near the flame's tip, surprisingly, was a ring or bulging collar of darkness, but the tip itself was a point of brilliant peacock blue. Certainly this was no ordinary flame, though it fluttered and changed its shape in the air-current much like any other flame.