In 1855 he was elected a member of the second chamber; and as the government refused to allow him leave of absence from his official duties he resigned his post in the public service.
In 1866 he received three years' leave of absence to collect fresh materials, and in 1869 succeeded Heinrich Ewald as professor of oriental languages at Gottingen.
After gaining a further extension of leave of absence from his regiment he returned to Ajaccio and spent six months more in the midst of family and political affairs.
Thanks to the friendly intervention of the marechal du camp, baron Duteil, Bonaparte once more gained leave of absence for three months and reached Corsica in September 1791.
At Rome, in the Jubilee year 1500, he himself lectured with applause; but having been nominated in 1497 canon of the cathedral of Frauenburg, he recrossed the Alps in 1501 with the purpose of obtaining further leave of absence for the completion of his academic career.