I had heard something of Moissan, but I knew his artificial diamonds were very small. I shook my head.

"You seem to know something of this kind of thing. I will tell you a little about myself. Perhaps then you may think better of the purchase." He turned round with his back to the river, and put his hands in his pockets. He sighed. "I know you will not believe me."

"Diamonds," he began--and as he spoke his voice lost its faint flavour of the tramp and a.s.sumed something of the easy tone of an educated man--"are to be made by throwing carbon out of combination in a suitable flux and under a suitable pressure; the carbon crystallises out, not as black-lead or charcoal-powder, but as small diamonds. So much has been known to chemists for years, but no one yet has. .h.i.t upon exactly the right flux in which to melt up the carbon, or exactly the right pressure for the best results. Consequently the diamonds made by chemists are small and dark, and worthless as jewels. Now I, you know, have given up my life to this problem--given my life to it.

"I began to work at the conditions of diamond making when I was seventeen, and now I am thirty-two. It seemed to me that it might take all the thought and energies of a man for ten years, or twenty years, but, even if it did, the game was still worth the candle. Suppose one to have at last just hit the right trick, before the secret got out and diamonds became as common as coal, one might realise millions.

Millions!"

He paused and looked for my sympathy. His eyes shone hungrily. "To think," said he, "that I am on the verge of it all, and here!

"I had," he proceeded, "about a thousand pounds when I was twenty-one, and this, I thought, eked out by a little teaching, would keep my researches going. A year or two was spent in study, at Berlin chiefly, and then I continued on my own account. The trouble was the secrecy.

You see, if once I had let out what I was doing, other men might have been spurred on by my belief in the practicability of the idea; and I do not pretend to be such a genius as to have been sure of coming in first, in the case of a race for the discovery. And you see it was important that if I really meant to make a pile, people should not know it was an artificial process and capable of turning out diamonds by the ton. So I had to work all alone. At first I had a little laboratory, but as my resources began to run out I had to conduct my experiments in a wretched unfurnished room in Kentish Town, where I slept at last on a straw mattress on the floor among all my apparatus.

The money simply flowed away. I grudged myself everything except scientific appliances. I tried to keep things going by a little teaching, but I am not a very good teacher, and I have no university degree, nor very much education except in chemistry, and I found I had to give a lot of time and labour for precious little money. But I got nearer and nearer the thing. Three years ago I settled the problem of the composition of the flux, and got near the pressure by putting this flux of mine and a certain carbon composition into a closed-up gun-barrel, filling up with water, sealing tightly, and heating."

He paused.

"Rather risky," said I.

"Yes. It burst, and smashed all my windows and a lot of my apparatus; but I got a kind of diamond powder nevertheless. Following out the problem of getting a big pressure upon the molten mixture from which the things were to crystallise, I hit upon some researches of Daubree's at the Paris _Laboratorie des Poudres et Salpetres_. He exploded dynamite in a tightly screwed steel cylinder, too strong to burst, and I found he could crush rocks into a muck not unlike the South African bed in which diamonds are found. It was a tremendous strain on my resources, but I got a steel cylinder made for my purpose after his pattern. I put in all my stuff and my explosives, built up a fire in my furnace, put the whole concern in, and--went out for a walk."

I could not help laughing at his matter-of-fact manner. "Did you not think it would blow up the house? Were there other people in the place?"

"It was in the interest of science," he said, ultimately. "There was a costermonger family on the floor below, a begging-letter writer in the room behind mine, and two flower-women were upstairs. Perhaps it was a bit thoughtless. But possibly some of them were out.

"When I came back the thing was just where I left it, among the white-hot coals. The explosive hadn't burst the case. And then I had a problem to face. You know time is an important element in crystallisation. If you hurry the process the crystals are small--it is only by prolonged standing that they grow to any size. I resolved to let this apparatus cool for two years, letting the temperature go down slowly during that time. And I was now quite out of money; and with a big fire and the rent of my room, as well as my hunger to satisfy, I had scarcely a penny in the world.

"I can hardly tell you all the shifts I was put to while I was making the diamonds. I have sold newspapers, held horses, opened cab-doors.

For many weeks I addressed envelopes. I had a place as a.s.sistant to a man who owned a barrow, and used to call down one side of the road while he called down the other. Once for a week I had absolutely nothing to do, and I begged. What a week that was! One day the fire was going out and I had eaten nothing all day, and a little chap taking his girl out, gave me sixpence--to show-off. Thank heaven for vanity! How the fish-shops smelt! But I went and spent it all on coals, and had the furnace bright red again, and then--Well, hunger makes a fool of a man.

"At last, three weeks ago, I let the fire out. I took my cylinder and unscrewed it while it was still so hot that it punished my hands, and I sc.r.a.ped out the crumbling lava-like ma.s.s with a chisel, and hammered it into a powder upon an iron plate. And I found three big diamonds and five small ones. As I sat on the floor hammering, my door opened, and my neighbour, the begging-letter writer, came in. He was drunk--as he usually is. ''Nerchist,' said he. 'You're drunk,' said I.

''Structive scoundrel,' said he. 'Go to your father,' said I, meaning the Father of Lies. 'Never you mind,' said he, and gave me a cunning wink, and hiccuped, and leaning up against the door, with his other eye against the door-post, began to babble of how he had been prying in my room, and how he had gone to the police that morning, and how they had taken down everything he had to say--''siffiwas a ge'm,' said he. Then I suddenly realised I was in a hole. Either I should have to tell these police my little secret, and get the whole thing blown upon, or be lagged as an Anarchist. So I went up to my neighbour and took him by the collar, and rolled him about a bit, and then I gathered up my diamonds and cleared out. The evening newspapers called my den the Kentish-Town Bomb Factory. And now I cannot part with the things for love or money.

"If I go in to respectable jewellers they ask me to wait, and go and whisper to a clerk to fetch a policeman, and then I say I cannot wait.

And I found out a receiver of stolen goods, and he simply stuck to the one I gave him and told me to prosecute if I wanted it back. I am going about now with several hundred thousand pounds-worth of diamonds round my neck, and without either food or shelter. You are the first person I have taken into my confidence. But I like your face and I am hard-driven."

He looked into my eyes.

"It would be madness," said I, "for me to buy a diamond under the circ.u.mstances. Besides, I do not carry hundreds of pounds about in my pocket. Yet I more than half believe your story. I will, if you like, do this: come to my office to-morrow...."

"You think I am a thief!" said he keenly. "You will tell the police. I am not coming into a trap."

"Somehow I am a.s.sured you are no thief. Here is my card. Take that, anyhow. You need not come to any appointment. Come when you will."

He took the card, and an earnest of my good-will.

"Think better of it and come," said I.

He shook his head doubtfully. "I will pay back your half-crown with interest some day--such interest as will amaze you," said he. "Anyhow, you will keep the secret?... Don't follow me."

He crossed the road and went into the darkness towards the little steps under the archway leading into Ess.e.x Street, and I let him go.

And that was the last I ever saw of him.

Afterwards I had two letters from him asking me to send bank-notes--not cheques--to certain addresses. I weighed the matter over, and took what I conceived to be the wisest course. Once he called upon me when I was out. My urchin described him as a very thin, dirty, and ragged man, with a dreadful cough. He left no message. That was the finish of him so far as my story goes. I wonder sometimes what has become of him. Was he an ingenious monomaniac, or a fraudulent dealer in pebbles, or has he really made diamonds as he a.s.serted? The latter is just sufficiently credible to make me think at times that I have missed the most brilliant opportunity of my life. He may of course be dead, and his diamonds carelessly thrown aside--one, I repeat, was almost as big as my thumb. Or he may be still wandering about trying to sell the things. It is just possible he may yet emerge upon society, and, pa.s.sing athwart my heavens in the serene alt.i.tude sacred to the wealthy and the well-advertised, reproach me silently for my want of enterprise. I sometimes think I might at least have risked five pounds.

AEPYORNIS ISLAND

The man with the scarred face leant over the table and looked at my bundle.

"Orchids?" he asked.

"A few," I said.

"Cypripediums," he said.

"Chiefly," said I.

"Anything new? I thought not. _I_ did these islands twenty-five--twenty-seven years ago. If you find anything new here--well it's brand new. I didn't leave much."

"I'm not a collector," said I.

"I was young then," he went on. "Lord! how I used to fly round." He seemed to take my measure. "I was in the East Indies two years, and in Brazil seven. Then I went to Madagascar."

"I know a few explorers by name," I said, antic.i.p.ating a yarn. "Whom did you collect for?"

"Dawsons. I wonder if you've heard the name of Butcher ever?"

"Butcher--Butcher?" The name seemed vaguely present in my memory; then I recalled _Butcher_ v. _Dawson_. "Why!" said I, "you are the man who sued them for four years' salary--got cast away on a desert island ..."

"Your servant," said the man with the scar, bowing. "Funny case, wasn't it? Here was me, making a little fortune on that island, doing nothing for it neither, and them quite unable to give me notice. It often used to amuse me thinking over it while I was there. I did calculations of it--big--all over the blessed atoll in ornamental figuring."

"How did it happen?" said I. "I don't rightly remember the case."

"Well.... You've heard of the Aepyornis?"

"Rather. Andrews was telling me of a new species he was working on only a month or so ago. Just before I sailed. They've got a thigh bone, it seems, nearly a yard long. Monster the thing must have been!"

"I believe you," said the man with the scar. "It _was_ a monster.

Sinbad's roc was just a legend of 'em. But when did they find these bones?"

"Three or four years ago--'91, I fancy. Why?"

"Why? Because _I_ found 'em--Lord!--it's nearly twenty years ago. If Dawsons hadn't been silly about that salary they might have made a perfect ring in 'em.... _I_ couldn't help the infernal boat going adrift."

He paused, "I suppose it's the same place. A kind of swamp about ninety miles north of Antananarivo. Do you happen to know? You have to go to it along the coast by boats. You don't happen to remember, perhaps?"