A March on London: Being a Story of Wat Tyler's Insurrection by G. A. Henty (types of ebook readers .txt) 📗

"Many other strange things have been discovered, some of which may seem useless at present, but may, upon further experiments on their properties, turn out of value to man. Such a substance I discovered two years ago. I was experimenting upon bones, and endeavouring to ascertain whether a powder might not be procured which, when mixed with other substances, would produce unexpected results. After calcining the bones, I treated the white ash with various acids and alkaloids, and with fire and water, returning again and again to the trials when I had time. While conducting these experiments, I found that there was certainly some substance present with whose nature I was altogether unacquainted.

"One evening, going into the laboratory after dark, I observed with astonishment what looked like a lambent flame upon the table. In my alarm I ran forward to put it out, but found that there was no heat in it; lighting my lamp I could no longer see it, but on the table I found a few grains of the stuff I had been experimenting on. Turning out the lamp the light was again visible, and after much thought I concluded that it was similar to the light given by the little creatures called glowworms, and which in its turn somewhat resembles the light that can be seen at times in a pile of decaying fish. I tried many experiments, but as nothing came of them I gave them up, not seeing that any use could come of a fire that gave out no heat. I produced a powder, however, that when rubbed on any substance, became luminous in the dark, presenting an appearance strange and sufficiently alarming to the ignorant.

"Thinking the matter over some time ago, I took a little of this powder from the phial in which I had stored it away, and, moistening it, rubbed it on the wall in the form of circles, triangles, and other signs. I did this just before it became dark. As the moisture dried, these figures gradually assumed a luminous appearance. I saw the use to which this could be put in awing a mob, and, setting to work, made a large supply of this powder."

"How long does it retain its light, father?"

"That is uncertain. For some hours in a darkened room, the light gradually growing fainter, but if a bright day follows, the figures stand out on the following night as brightly as before; while if the day is dull they show up but faintly at night. I see not that any use can come of such a thing, for the light is at all times too faint to be used for reading unless the page is held quite close to it. Come downstairs with me and I will show you the head of one of the old Roman statues that was dug up near Rochester, and which I bought for a few pence last year."

They went down into the laboratory. The light was burning. "There you see, Edgar, I have painted this head with the stuff, and now you can see nothing more unusual than if it had been daubed with whitewash. Now I will extinguish the lamp."

Prepared as he was, Edgar nevertheless stepped back with an exclamation of surprise and almost awe. The head stood out in the darkness with startling distinctness. It had the effect of being bathed in moonlight, although much more brilliant than even the light of the full moon. It seemed to him, indeed, almost as if a faint wavering light played around it, giving the stern face of the old Roman a sardonic and evil expression.

"You can touch it, Edgar, but you will see that there is not the slightest warmth."

"It is wonderful, father."

"Yes, it is a strange thing; but is, so far as I can see, of no use save as a wonder, and it is just one of those wonders that to most people would seem to be magical. I showed it a short time ago to the prior, having explained to him beforehand how I had discovered it. He is above the superstitions of folks in general, and knowing that I could have no motive in deceiving him, was much interested; but he said to me, 'This is one of the things that were best concealed. I can quite understand that there are many things in nature of which we are ignorant. I know that what you say of decayed fish sometimes giving out light like this is perfectly true, and everyone knows that the glowworms, when the weather is damp, light up the banks and fields, although no heat can be felt. Doubtless in your researches on bones you have discovered some substance akin to that which causes the light in those cases, but you would never persuade the vulgar of this.

"'Nay, there are even churchmen and prelates who would view it as magic. Therefore, my friend, seeing that, as you say, the powder is not likely to be of any use to man, I should say that it were best that you destroy it, for if whispers of it got abroad you might well be accused of dealing in magic. All knowledge of things beyond them is magic to the ignorant. Roger Bacon was treated as a magician, and I doubt not that this will ever be the case with all those who are more learned than their fellow-men. Therefore my advice to you is, burn the stuff and say naught about it.'

"I did not take his advice, Edgar, for it seemed to me that it might well be used to awe any unruly mob that might come hither at night to attack me. I have made an experiment that, though I believe not in the supernatural, would have frightened me had I seen it without knowing anything of its nature. You know that old skull that was dug up out of the garden last month, I have hung the lower jaw on wires so that it can be moved, and have to-day painted it, and now I will blow out the light again, and then take it from the cupboard."

A moment later the room was in darkness, and then an exclamation of surprise and almost terror rose from Edgar. In front of him there was a gibbering skull, the lower jaw wagging up and down, as if engaging in noiseless laughter, It was much more brilliant than the stone head had been, and a lambent flame played round it.

"What think ye of that, Edgar?"

"It is ghastly, sir, horrible!"

"It is not a pleasant object," his father said, quietly, as he struck the tinder and again lighted the lamp. "I fancy, Edgar, that if a mob of people were to break down the door and find themselves confronted by that object they would fly in terror."

"Assuredly they would, father; they would not stop running this side of Dartford. Even though I expected it, the sight sent a shiver through me, and my teeth well-nigh chattered. But this would only avail in case of a night attack."

"It would avail something even in daylight, Edgar. These downstairs rooms have but little light, and that little I intend to block up by nailing boards inside, and by hanging sacks over them outside. Then if I place the skull in the passage, those who sought me in my laboratory would be brought to a standstill. But there are other means. I have buried jars filled with Friar Bacon's powder round the house, with trains by which they can be fired. At present the common people know little of guns, and methinks that the explosion of two or three of these jars would send them about their business, I have other devices which it is not necessary to enter upon, but which would