went to the banker who paid me the amount. I returned to my room in which
he was waiting for me, and placed the gold on the table, saying that we
could now proceed together to the Tour-du-Grec, where we would complete
our arrangements after the signature of a deed of agreement. The Greek
had his own carriage and horses; he gave orders for them to be got ready,
and we left the inn; but he had nobly insisted upon my taking possession
of the fifty ounces.

When we arrived at the Tour-du-Grec, he signed a document by which he
promised to pay me two thousand ounces as soon as I should have
discovered to him the process of augmenting mercury by one-fourth without
injuring its quality, the amalgam to be equal to the mercury which I had
sold in his presence at Portici.

He then gave me a bill of exchange payable at sight in eight days on M.
Genaro de Carlo. I told him that the ingredients were lead and bismuth;
the first, combining with mercury, and the second giving to the whole the
perfect fluidity necessary to strain it through the chamois leather. The
Greek went out to try the amalgam--I do not know where, and I dined
alone, but toward evening he came back, looking very disconsolate, as I
had expected.

"I have made the amalgam," he said, "but the mercury is not perfect."

"It is equal to that which I have sold in Portici, and that is the very
letter of your engagement."

"But my engagement says likewise without injury to the quality. You must
agree that the quality is injured, because it is no longer susceptible of
further augmentation."

"You knew that to be the case; the point is its equality with the mercury
I sold in Portici. But we shall have to go to law, and you will lose. I
am sorry the secret should become public. Congratulate yourself, sir,
for, if you should gain the lawsuit, you will have obtained my secret for
nothing. I would never have believed you capable of deceiving me in such
a manner."

"Reverend sir, I can assure you that I would not willingly deceive any
one."

"Do you know the secret, or do you not? Do you suppose I would have given
it to you without the agreement we entered into? Well, there will be some
fun over this affair in Naples, and the lawyers will make money out of
it. But I am much grieved at this turn of affairs, and I am very sorry
that I allowed myself to be so easily deceived by your fine talk. In the
mean time, here are your fifty ounces."

As I was taking the money out o