“You make the glass invisible by putting it into a liquid of nearly the same refractive index; a transparent thing becomes invisible if it is put in any medium of almost the same refractive index. And if you will consider only a second, you will see also that the powder of glass might be made to vanish in air, if its refractive index could be made the same as that of air; for then there would be no refraction or reflection as the light passed from glass to air.”

“Yes, yes,” said Kemp. “But a man’s not powdered glass!”

“No,” said Griffin. “He’s more transparent!”

“Nonsense!”

“That from a doctor! How one forgets! Have you already forgotten your physics, in ten years? Just think of all the things that are transparent and seem not to be so. Paper, for instance, is made up of transparent fibres, and it is white and opaque only for the same reason that a powder of glass is white and opaque. Oil white paper, fill up the interstices between the particles with oil so that there is no longer refraction or reflection except at the surfaces, and it becomes as transparent as glass. And not only paper, but cotton fibre, linen fibre, wool fibre, woody fibre, and bone, Kemp, flesh, Kemp, hair, Kemp, nails and nerves, Kemp, in fact the whole fabric of a man except the red of his blood and the black pigment of hair, hair are all made up of transparent, colourless tissue. So little suffices to make us visible one to the other. For the most part the fibres of a living creature are no more opaque than water.”

“Great Heavens!” cried Kemp. “Of course, of course! I was thinking only last night of the sea larvae and all jelly-fish!”

“Now you have me! And all that I knew and had in mind a year after I left London — six years ago. But I kept it to myself. I had to do my work under frightful disadvantages. Oliver, my professor, was a scientific bounder, a journalist by instinct, a thief of ideas — he was always prying! And you know the knavish system of the scientific world. I simply would not publish, and let him share my credit. I went on working; I got nearer and nearer making my formula into an experiment, a reality. I told no living soul, because I meant to flash my work upon the world with crushing effect and become famous at a blow. I took up the question of pigments to fill up certain gaps. And suddenly, not by design but by accident, I made a discovery in physiology.”

“Yes?”

“You know the red colouring matter of blood; it can be made white — colourless — and remain with all the functions it has now!”

Kemp gave a cry of incredulous amazement.

The Invisible Man rose and began pacing the little study. “You may well exclaim. I remember that night. It was late at night — in the daytime one was bothered with the gaping, silly students — and I worked then sometimes till dawn. It came suddenly, splendid and complete in my mind. I was alone; the laboratory was still, with the tall lights burning brightly and silently. In all my great moments I have been alone. ‘One could make an animal — a tissue — transparent! One could make it invisible! All except the pigments — I could be invisible!’ I said, suddenly realising what it meant to be an albino with such knowledge. It was overwhelming. I left the filtering I was doing, and went and stared out of the great window at the stars. ‘I could be invisible!’ I repeated.

His stories were what frightened people worst of all. Dreadful stories they were—about hanging, and walking the plank, and storms at sea, and the Dry Tortugas, and wild deeds and places on the Spanish Main. By his own account he must have lived his life among some of the wickedest men that God ever allowed upon the sea, and the language in which he told these stories shocked our plain country people almost as much as the crimes that he described. My father was always saying the inn would be ruined, for people would soon cease coming there to be tyrannized over and put down, and sent shivering to their beds; but I really believe his presence did us good. People were frightened at the time, but on looking back they rather liked it; it was a fine excitement in a quiet country life, and there was even a party of the younger men who pretended to admire him, calling him a “true sea–dog” and a “real old salt” and such like names, and saying there was the sort of man that made England terrible at sea.

In one way, indeed, he bade fair to ruin us, for he kept on staying week after week, and at last month after month, so that all the money had been long exhausted, and still my father never plucked up the heart to insist on having more. If ever he mentioned it, the captain blew through his nose so loudly that you might say he roared, and stared my poor father out of the room. I have seen him wringing his hands after such a rebuff, and I am sure the annoyance and the terror he lived in must have greatly hastened his early and unhappy death.

All the time he lived with us the captain made no change whatever in his dress but to buy some stockings from a hawker. One of the cocks of his hat having fallen down, he let it hang from that day forth, though it was a great annoyance when it blew. I remember the appearance of his coat, which he patched himself upstairs in his room, and which, before the end, was nothing but patches. He never wrote or received a letter, and he never spoke with any but the neighbours, and with these, for the most part, only when drunk on rum. The great sea–chest none of us had ever seen open.

He was only once crossed, and that was towards the end, when my poor father was far gone in a decline that took him off. Dr. Livesey came late one afternoon to see the patient, took a bit of dinner from my mother, and went into the parlour to smoke a pipe until his horse should come down from the hamlet, for we had no stabling at the old Benbow. I followed him in, and I remember observing the contrast the neat, bright doctor, with his powder as white as snow and his bright, black eyes and pleasant manners, made with the coltish country folk, and above all, with that filthy, heavy, bleared scarecrow of a pirate of ours, sitting, far gone in rum, with his arms on the table. Suddenly he—the captain, that is—began to pipe up his eternal song:

“Fifteen men on the dead man’s chest—
Yo–ho–ho, and a bottle of rum!
Drink and the devil had done for the rest—
Yo–ho–ho, and a bottle of rum!”