Something has been said in a previous chapter of the novelist's belief in certain occult powers of the mind, with which the newly discovered action of magnetism seemed to him to be connected. At first, his ideas on the subject were a good deal mixed. When, in 1832, a terrible epidemic of cholera was spreading its ravages, he wrote to Doctor Chapelain, suggesting that somnambulism--he would have called it hypnotism to-day--should be employed to seek out the causes of the malady, and a test applied to prove whether its virtues were real or chimerical. In 1834, he had come to pin his faith to the healing powers of magnetism. "When you or Monsieur Hanski or Anna are ill," he wrote to Eve, "let me know. Don't laugh at me. At Issoudun, facts recently demonstrated to me that I possess very large magnetic potency, and that, either through a somnambulist" (he meant a hypnotist) "or through myself, I can cure persons dear to me." To all his friends he reiterated the same advice--magnetic treatment, which he declared his mother capable of exercising as well as himself. Madame Balzac's initiation into the science was due to the Prince of Hohenlohe-Waldenburg-Schillingfurst, Bishop of Sardica, who, in his several visits to Paris between 1821 and 1829, wrought wonderful cures by the simple imposition of hands. As the lady used to suffer from a swelling in the bowels whenever she ate raw fruit, the Bishop, hearing of it, came one day to see her, and applied his method, which cured her. Balzac, being a witness of the miracle, became an ardent investigator in this new branch--or rather old branch revived--of therapeutics. Thenceforward, his predilection for theories of the occult went hand in hand with his equally strong taste for the analytic observation of visible phenomena; and not infrequently he indulged in their simultaneous literary expression. The composing of _Seraphita_ was carried on at the same time as his _Search for the Absolute_ and _Pere Goriot_.