“SIR,— “A twelvemonth ago, or a little more, I expressed to you my joy at hearing of your elevation to the ministry; I have now the honour to write you my opinion of the Sieur Delisle, who has been working at the transmutation of metals in my diocese. I have, during the last two years, spoken of him several times to the Count de Pontchartrain, because he asked me; but I have not written to you, sir, or to M. de Chamillart, because you neither of you requested my opinion upon the subject. Now, however, that you have given me to understand that you wish to know my sentiments on the matter, I will unfold myself to you in all sincerity, for the interests of the King and the glory of your ministry.

“There are two things about the Sieur Delisle which, in my opinion, should be examined without prejudice: the one relates to his secret; the other, to his person; that is to say, whether his transmutations are real, and whether his conduct has been regular. As regards the secret of the philosopher’s stone, I deemed it impossible, for a long time; and for more than three years, I was more mistrustful of the pretensions of this Sieur Delisle than of any other person. During this period I afforded him no countenance; I even aided a person, who was highly recommended to me by an influential family of this province, to prosecute Delisle for some offence or other which it was alleged he had committed. But this person, in his anger against him, having told me that he had himself been several times the bearer of gold and silver to the goldsmiths of Nice, Aix, and Avignon, which had been transmuted by Delisle from lead and iron, I began to waver a little in my opinions respecting him. I afterwards met Delisle at the house of one of my friends. To please me, the family asked Delisle to operate before me, to which he immediately consented. I offered him some iron nails, which he changed into silver in the chimney-place before six or seven credible witnesses. I took the nails thus transmuted, and sent them by my almoner to Irabert, the jeweller of Aix, who, having subjected them to the necessary trial, returned them to me, saying they were very good silver. Still, however, I was not quite satisfied. M. de Pontchartrain having hinted to me, two years previously, that I should do a thing agreeable to his Majesty if I examined into this business of Delisle, I resolved to do so now. I therefore summoned the alchymist to come to me at Castellane. He came; and I had him escorted by eight or ten vigilant men, to whom I had given notice to watch his hands strictly. Before all of us he changed two pieces of lead into gold and silver. I sent them both to M. de Pontchartrain; and he afterwards informed me by a letter, now lying before me, that he had shown them to the most experienced goldsmiths of Paris, who unanimously pronounced them to be gold and silver of the very purest quality, and without alloy. My former bad opinion of Delisle was now indeed shaken. It was much more so when he performed transmutation five or six times before me at Senes, and made me perform it myself before him without his putting his hand to anything. You have seen, sir, the letter of my nephew, the Père Berard, of the Oratoire at Paris, on the experiment that he performed at Castellane, and the truth of which I hereby attest. Another nephew of mine, the Sieur Bourget, who was here three weeks ago, performed the same experiment in my presence, and will detail all the circumstances to you personally at Paris. A hundred persons in my diocese have been witnesses of these things. I confess to you, sir, that, after the testimony of so many spectators and so many goldsmiths, and after the repeatedly successful experiments that I saw performed, all my prejudices vanished. My reason was convinced by my eyes; and the phantoms of impossibility which I had conjured up were dissipated by the work of my own hands.

“It now only remains for me to speak to you on the subject of his person and conduct. Three suspicions have been excited against him: the first, That he was implicated in some criminal proceeding at Cisteron, and that he falsified the coin of the realm; the second, That the King sent him two safe-conducts without effect; and the third, That he still delays going to court to operate before the King. You may see, sir, that I do not hide or avoid anything. As regards the business at Cisteron, the Sieur Delisle has repeatedly assured me that there was nothing against him which could reasonably draw him within the pale of justice, and that he had never carried on any calling injurious to the King’s service. It was true that, six or seven years ago, he had been to Cisteron to gather herbs necessary for his powder, and that he had lodged at the house of one Pelouse, whom he thought an honest man. Pelouse was accused of clipping Louis d’ors; and as he had lodged with him, he was suspected of being his accomplice. This mere suspicion, without any proof whatever, had caused him to be condemned for contumacy; a common case enough with judges, who always proceed with much rigour against those who are absent. During my own sojourn at Aix, it was well known that a man, named André Aluys, had spread about reports injurious to the character of Delisle, because he hoped thereby to avoid paying him a sum of forty Louis that he owed him. But