At the time when Mesmer made so much noise in Paris with his magnetism, M. Campan, my husband, was his partisan, like almost every person who moved in high life. To be magnetized was then a fashion; nay, it was more, it was absolutely a rage. In the drawing-rooms, nothing was talked of but the brilliant discovery. There was to be no more dying; people's heads were turned, and their imaginations heated in the highest degree. To accomplish this object, it was necessary to bewilder the understanding; and Mesmer, with his singular language, produced that effect. To put a stop to the fit of public insanity was the grand difficulty; and it was proposed to have the secret purchased by the court. Mesmer fixed his claims at a very extravagant rate. However, he was offered fifty thousand crowns. By a singular chance, I was one day led into the midst of the somnambulists. Such was the enthusiasm of the spectators, that, in most of them, I could observe a wild rolling of the eye, and a convulsed movement of the countenance. A stranger might have fancied himself amidst the unfortunate patients of Charenton. Surprised and shocked at seeing so many people almost in a state of delirium, I withdrew, full of reflections on the scene which I had just witnessed. It happened that about this time my husband was attacked with a pulmonary disorder, and he desired that he might be conveyed to Mesmer's house. Being introduced into the apartment occupied by M. Campan, I asked the worker of miracles what treatment he proposed to adopt; he very coolly replied, that to ensure a speedy and perfect cure, it would be necessary to lay in the bed of the invalid, at his left side, one of three things, namely, a young woman of brown complexion; a black hen; or an empty bottle. "Sir," said I, "if the choice be a matter of indifference, pray try the empty bottle." M. Campan's side grew worse; he experienced a difficulty of breathing and a pain in his chest. All magnetic remedies that were employed produced no effect. Perceiving his failure, Mesmer took advantage of the periods of my absence to bleed and blister the patient. I was not informed of what had been done until after M. Campan's recovery. Mesmer was asked for a certificate, to prove that the patient had been cured by means of magnetism only; and he gave it. Here was a trait of enthusiasm! Truth was no longer respected. When I next presented myself to the queen (Marie-Antoinette), their majesties asked what I thought of Mesmer's discovery. I informed them of what had taken place, earnestly expressing my indignation at the conduct of the barefaced quack. It was immediately determined to have nothing more to do with him. THE EMPEROR ALEXANDER'S VISIT TO MADAME CAMPAN'S SCHOOL.