Although he was still in the full prime of youth, Paganini devoted his talent steadily to success and profit, when, in one of those hallucinations to which all great artists are subject, the violin lost its attractions in his eyes. A lady of rank having fallen desperately in love with him, and reciprocated by him, he withdrew with her to an estate she possessed in Tuscany. This lady played the guitar, and Paganini imbibed a taste for the instrument, and applied himself as sedulously to its practice as he had formerly done with the violin. He soon discovered new resources; and during a period of three years, he divided all the energies of his mind between its study, and agricultural pursuits, for which the lady's estate afforded him ample opportunities. But Paganini's former _penchant_ for the violin returned, and he decided on resuming his travels. On his return to Genoa, in 1804, he occupied himself solely with composition. It appears, too, that at this period he gave instruction on the violin to Catherine Calcagno, born at Genoa, in 1797, who, at the age of fifteen, astounded Italy by the boldness of her style; all traces of her seem lost after 1816. Toward the middle of 1805, Paganini left Genoa, to undertake a new tour in Italy. The first town he visited was Lucca, the scene of his first successes. Here he again created so great a sensation by the concerto he performed at a nocturnal festival, in a convent chapel, that the monks were obliged to leave their stalls, in order to repress the applause which burst forth, despite the sanctity of the place. He was then twenty-one years of age. The principality of Lucca and Piombino had been organized in the month of March, of the same year, in favor of the Princess Eliza, sister of Napoleon, and the wife of Prince Bacciochi. The court had fixed its residence in the town of Lucca. The great reputation of the violinist induced the princess to offer him the posts of director of her private music, and conductor of the Opera orchestra, which he accepted. The princess, who had appreciated the originality of his talent, excited him to extend his discoveries of novel effects upon his instrument. To convince him of the interest he had inspired her with, she granted him the grade of captain in the Royal Gendarmerie, so that he might be admitted with his brilliant costume at all the great court receptions. Seeking to vary the effect of his instrument at the court concerts, he removed the second and third strings, and composed a dialogue sonata for the first and fourth strings. He has related this circumstance himself nearly in the same terms: