correctly.

On the 12th of May, 1866, a great conflagration, infinitely larger than that of London or Moscow, was announced. To use the expression of a distinguished astronomer, a world was found to be on fire! A star, which till then had shone weakly and unobtrusively in the corona borealis, suddenly blazed up into a luminary of the second magnitude. In the course of three days from its discovery in this new character, by Birmingham, at Tuam, it had declined to the third or fourth order of brilliancy. In twelve days, dating from its first apparition in the Irish heavens, it had sunk to the eighth rank, and it went on waning until the 26th of June, when it ceased to be discernible except through the medium of the telescope. This was a remarkable, though certainly not an unprecedented proceeding on the part of a star; but one singular circumstance in its behavior was that, after the lapse of nearly two months, it began to blaze up again, though not with equal ardor, and after maintaining its glow for a few weeks, and passing through sundry phases of color, it gradually paled its fires, and returned to its former insignificance. How many years had elapsed since this awful conflagration actually took place, it would be presumptuous to guess; but it must be remembered that news from the heavens, though carried by the fleetest of messengers, light, reaches us long after the event has transpired, and that the same celestial carrier is still dropping the tidings at each station it reaches in space, until it sinks exhausted by the length of its flight.

As the star had suddenly flamed up, was it not a natural supposition that it had become inwrapped in burning hydrogen, which in consequence of some great convulsion had been liberated in prodigious quantities, and then combining with other elements, had set this hapless world on fire? In such a fierce conflagration, the combustible gas would soon be consumed, and the glow would therefore begin to decline, subject, as in this case, to a second eruption, which occasioned the renewed outburst of light on the 20th of August.

By such a catastrophe, it is not wholly impossible that our own globe may some time be ravaged; for if a word from the Almighty were to unloose for a few moments the bonds of affinity which unite the elements of water, a single spark would bring them together with a fury that would kindle the funeral pyre of the human race, and be fatal to the planet and all the works that are thereon.

"Your argument," he then instantly added, "is by no means a good one. What do we know of the Supreme Architect of the Universe, or of his designs? He builds up worlds, and he pulls them down; he kindles suns and he extinguishes them. He inflames the comet, in one portion of its orbit, with a heat that no human imagination can conceive of; and in another, subjects the same blazing orb to a cold intenser than that which invests forever the antarctic pole. All that we know of Him we gather through His works. I have shown you that He burns other worlds, why not this? The habitable parts of our globe are surrounded by water, and water you know is fire in possibility."

"But all this," I rejoined, "is pure, baseless, profitless speculation."

"Not so fast," he answered. And then rising, he seized the small vial, and handing it to me, requested me to open it.

I confess I did so with some trepidation.

"Now smell it."

I did so.

"What odor do you perceive?"

"Potassium," I replied.

"Of course," he added, "you are familiar with the chief characteristic of that substance. It ignites instantly when brought in contact with water. Within that little globule of potassium, I have imbedded a pill of my own composition and discovery. The moment it is liberated from the potassium, it commences the work of decomposing the fluid on which it floats. The potassium at once ignites the liberated oxygen, and the conflagration of this mighty globe is begun."

"Yes," said I, "begun, if you please, but your little pill soon evaporates or sinks, or melts in the surrounding seas, and your conflagration ends just where it began."

"My reply to that suggestion could be made at once by simply testing the experiment on a small scale, or a large one, either. But I prefer at present to refute your proposition by an argument drawn from nature herself. If you correctly remember, the first time I had the pleasure of seeing you was on the island of Galveston, many years ago. Do you remember relating to me at that time an incident concerning the effects of a prairie on fire, that you had yourself witnessed but a few days previously, near the town of Matagorde? If I recollect correctly, you stated that on your return journey from that place, you passed on the way the charred remains of two wagon-loads of cotton, and three human beings, that the night before had perished in the flames; that three slaves, the property of a Mr. Horton, had started a few days before to carry to market a shipment of cotton; that a norther overtook them on the treeless prairie, and a few minutes afterwards they were surprised by beholding a line of rushing fire, surging, roaring and advancing like the resistless billows of an ocean swept by a gale; that there was no time for escape, and they perished terribly in fighting the devouring element?"

"Yes; I recollect the event."

"Now, then, I wish a reply to the simple question: Did the single spark, that kindled the conflagration, consume the negroes and their charge? No? But what did? You reply, of course, that the spark set the entire prairie on fire; that each spear of grass added fuel to the flame, and kindled by degrees a conflagration that continued to burn so long as it could feed on fresh material. The pillule in that vial is the little spark, the oceans are the prairies, and the oxygen the fuel upon which the fire is to feed until the globe perishes in inextinguishable flames. The elementary substances in that small vial recreate themselves; they are self-generating, and when once fairly under way must necessarily sweep onward, until the waters in all the seas are exhausted. There is, however, one great difference between the burning of a prairie and the combustion of an ocean: the fire in the first spreads slowly, for the fuel is difficult to ignite; in the last, it flies with the rapidity of the wind, for the substance consumed is oxygen, the most inflammable agent in nature."

Rising from my seat, I went to the washstand in the corner of the apartment, and drawing a bowl half full of Spring Valley water, I turned to Summerfield, and remarked, "Words are empty, theories are ideal—but facts are things."

"I take you at your word." So saying, he approached the bowl, emptied it of nine-tenths of its contents, and silently dropped the potassium-coated pill into the liquid. The potassium danced around the edges of the vessel, fuming, hissing, and blazing, as it always does, and seemed on the point of expiring—when, to my astonishment and alarm, a sharp explosion took place, and in a second of time the water was blazing in a red, lurid column, half way to the ceiling.

"For God's sake," I cried, "extinguish the flames, or we shall set the building on fire!"

"Had I dropped the potassium into the bowl as you prepared it," he quietly remarked, "the building would indeed have been consumed."

Lower and lower fell the flickering flames, paler and paler grew the blaze, until finally the fire went out, and I rushed up to see the effects of the combustion.

Not a drop of water remained in the vessel! Astonished beyond measure at what I had witnessed, and terrified almost to the verge of insanity, I approached Summerfield, and tremblingly inquired, "To whom, sir, is this tremendous secret known?" "To myself alone," he