My illustrious doctor, Mme. Le Roy and I send for news of you; we hope that your last attack of gout has much diminished or calmed down.

I also have the honor of informing you that if the weather is nice tomorrow, Thursday, the unknown or anonymous monsieur will perform his experiments on elementary fire at eleven o'clock, but I am concerned that you might not be able to join us. Please accept, my illustrious doctor, a thousand sincere assurances of my eternal attachment for you. Have you received any news from America? The anonymous monsieur no longer conducts his experiments in the same place. Now it is at the rue de Bourgogne, faubourg St. Germain, at Monsieur the Marquis de l'Aubespine.