Simon laughed awkwardly enough, but made none of the negative protestations usual on such occasions. He asked me to take a seat.

“Simon,” said I, “I have just come from Madame Vulpes.”

This time Simon turned as white as a sheet, and seemed stupefied, as if a sudden electric shock had smitten him. He babbled some incoherent words, and went hastily to a small closet where he usually kept his liquors. Although astonished at his emotion, I was too preoccupied with my own idea to pay much attention to anything else.

“You say truly when you call Madame Vulpes a devil of a woman,” I continued. “Simon, she told me wonderful things to-night, or rather was the means of telling me wonderful things. Ah! if I could only get a diamond that weighed one hundred and forty carats!”

Scarcely had the sigh with which I uttered this desire died upon my lips when Simon, with the aspect of a wild beast, glared at me savagely, and, rushing to the mantelpiece, where some foreign weapons hung on the wall, caught up a Malay creese, and brandished it furiously before him.

“No!” he cried in French, into which he always broke when excited. “No! you shall not have it! You are perfidious! You have consulted with that demon, and desire my treasure! But I will die first! Me, I am brave! You cannot make me fear!”

All this, uttered in a loud voice, trembling with excitement, astounded me. I saw at a glance that I had accidentally trodden upon the edges of Simon’s secret, whatever it was. It was necessary to reassure him.

“My dear Simon,” I said, “I am entirely at a loss to know what you mean. I went to Madame Vulpes to consult with her on a scientific problem, to the solution of which I discovered that a diamond of the size I just mentioned was necessary. You were never alluded to during the evening, nor, so far as I was concerned, even thought of. What can be the meaning of this outburst? If you happen to have a set of valuable diamonds in your possession, you need fear nothing from me. The diamond which I require you could not possess; or, if you did possess it, you would not be living here.”

Something in my tone must have completely reassured him, for his expression immediately changed to a sort of constrained merriment, combined, however, with a certain suspicious attention to my movements. He laughed, and said that I must bear with him; that he was at certain moments subject to a species of vertigo, which betrayed itself in incoherent speeches, and that the attacks passed off as rapidly as they came. He put his weapon aside while making this explanation, and endeavoured, with some success, to assume a more cheerful air.

All this did not impose on me in the least. I was too much accustomed to analytical labours to be baffled by so flimsy a veil. I determined to probe the mystery to the bottom.

“Simon,” I said gaily, “let us forget all this over a bottle of Burgundy. I have a case of Lausseure’s Clos Vougeot downstairs, fragrant with the odours and ruddy with the sunlight of the Côte d’Or. Let us have up a couple of bottles. What say you?”

“With all my heart,” answered Simon smilingly.

I produced the wine, and we seated ourselves to drink. It was of a famous vintage, that of 1848, a year when war and wine throve together, and its pure but powerful juice seemed to impart renewed vitality to the system. By the time we had half finished the second bottle, Simon’s head, which I knew was a weak one, had begun to yield, while I remained calm as ever, only that every draught seemed to send a flush of vigour through my limbs. Simon’s utterance became more and more indistinct. He took to singing French chansons of a not very moral tendency. I rose suddenly from the table just at the conclusion