In Europe, in the meanwhile, there had been some significant changes. On March 2, Emperor Francis of Austria died at the age of sixty-seven. The succession of Archduke Ferdinand to the throne produced no change in the national policy. Metternich was retained at the head of affairs. Almost of more moment to Germany was the death of Karl Wilhelm von Humboldt, the diplomat, and brother to Alexander, the great German explorer and philosophic writer. Besides his services as a statesman at the time of the international conferences at Paris and Vienna, he is distinguished for his philological researches in the Basque and Kauri languages. About the same time Hans Christian Andersen, the Danish author, published his first collection of fairy tales. The book had an immediate success, and after its translation into German achieved a world-wide reputation. Various translations from the German version and from the original had large sales in England and America. [Sidenote: Artistic activity in France] [Sidenote: May riots of Paris] [Sidenote: Fieschi's infernal machine] [Sidenote: Second campaign in Algiers] In France, too, notwithstanding political disturbances, fine arts and letters flourished. New creations appeared from the pens of Lamartine, Victor Hugo, Balzac, De Vigny and Alfred De Musset. Theophile Gautier brought out his masterpiece "Mademoiselle de Maupin." Among the musicians at Paris, Meyerbeer, Auber, Berlioz, Rossini, Bellini, Donizetti, Spontini, and Schapa were at the height of their activity. Politically it was a year of disturbances for France. The opening of the State trial of last year's conspirators before the Chamber of Peers was followed by diatribes in the press. The liberties of the press were further restricted. Riots again broke out in May. After all, but one man was condemned to death. Most of those who were implicated were sentenced to transportation. New laws for the repression of sedition were proposed by the Cabinet. Then it was that the first serious attempt was made on the life of Louis Philippe. Already seven projects of assassination had been discovered and frustrated, when a grand review of the National Guards, on July 28, gave an opportunity for a telling stroke. At the moment when the royal procession arrived on the Boulevard Temple, an infernal machine was set off by a Corsican named Fieschi. The King was saved only by the fact that he had bent down from his horse to receive a petition when the machine was discharged. Among those that were struck down were the Dukes of Orleans and Broglie, Marshal Mortier, General Verigny, and Captain Vilate. The perpetrators of the crime were put to death. In French foreign affairs a renewed uprising of Arab tribes under Abd-el-Kader necessitated another military campaign in Algeria.