I saw what he was driving at.

“You mean one of his mistresses?”

“Yes, and I think I know which one—­it belonged to Madame de Montespan.”

I stared at him in astonishment, as he sat back in his chair, smiling across at me.

“But,” I objected, “you can’t be sure—­”

“Of course I’m not sure,” he agreed quickly.  “That is to say, I couldn’t prove it.  But there is some—­ah—­contributory evidence, I think you lawyers call it Boule and the Montespan were in their glory at the same time, and I can imagine that flamboyant creature commissioning the flamboyant artist to build her just such a cabinet.”

“Really, Vantine,” I exclaimed, “I didn’t know you were so romantic.  You quite take my breath away.”

He flushed a little at the words, and I saw how deeply in earnest he was.

“The craze of the collector takes him a long way sometimes,” he said.  “But I believe I know what I’m talking about.  I am going to make a careful examination of the cabinet as soon as I can.  Perhaps I’ll find something—­there ought to be a monogram on it somewhere.  What I want you to do is to cable my shippers, Armand et Fils, Rue du Temple, find out who owns this cabinet, and buy it for me.”

“Perhaps the owner won’t sell,” I suggested.

“Oh yes, he will.  Anything can be bought—­for a price.”

“You mean you’re going to have this cabinet, whatever the cost?”

“I mean just that.”

“But, surely, there’s a limit.”

“No, there isn’t.”

“At least you’ll tell me where to begin,” I said.  “I don’t know anything of the value of such things.”

“Well,” said Vantine, “suppose you begin at ten thousand francs.  We mustn’t seem too eager.  It’s because I’m so eager, I want you to carry it through for me.  I can’t trust myself.”

“And the other end?”

“There isn’t any other end.  Of course, strictly speaking, there is, because my money isn’t unlimited; but I don’t believe you will have to go over five hundred thousand francs.”

I gasped.

“You mean you’re willing to give a hundred thousand dollars for this cabinet?”

Vantine nodded.

“Maybe a little more.  If the owner won’t accept that, you must let me know before you break off negotiations.  I’m a little mad about it, I fancy—­all collectors are a little mad.  But I want that cabinet, and I’m going to have it.”

I did not reply.  I only looked at him.  And he laughed as he caught my glance.

“I can see you share that opinion, Lester,” he said.  “You fear for me.  I don’t blame you—­but come and see it.”

He led the way out of the room and down the stairs; but when we reached the lower hall, he paused.

“Perhaps I’d better see my visitor first,” he said.  “You’ll find a new picture or two over there in the music-room—­I’ll be with you in a minute.”