In South America, Cochrane in a brilliant action took the Spanish stronghold of Valdivia, held to be a Gibraltar in strength. King Ferdinand in Madrid was terrified. From all points of Spain the commandants wrote that they could not answer for their garrisons. Abisbas was ordered to return to Cadiz with reinforcements. On leaving Madrid he boasted to the king that he knew how to deal with rebels. By the time he reached Ocana, early in March, he himself proclaimed the Constitution. The news of Abisbas' defection created consternation in Madrid. On the night of March 6, the king convoked his Council of State. On the morrow he issued a summons for the Cortes. This was not enough. Crowds gathered in the streets and clamored for the Constitution. A report that the guards were on the point of going over to the people brought the king around. From the balcony of the royal palace Ferdinand announced his readiness to take the oath to the Constitution. The next day was spent in riotous rejoicing. The prison of the Inquisition was sacked and all political prisoners were liberated. On the following day the mob broke into the gates and gardens of the royal palace. The members of the old municipal council entered the royal private chamber and called for a fulfilment of the king's public promise. Ferdinand accepted the inevitable under a smiling exterior, and swore an oath of fidelity to the Constitution of 1812. A provisional Junta took charge of affairs until the new Cortes should be convened. [Sidenote: Duc de Berry assassinated] The news of the Spanish revolution astounded Europe. In France a fanatic by the name of Louvel deemed the moment come to strike at the reigning house of France. Louvel had followed Napoleon to exile in Elba. After the Hundred Days he dogged the footsteps of the Bourbon princes with a settled project of murder. The heir-presumptive to the French crown was the Duc de Berry. If he died without a son the elder Bourbon line was bound to become extinct as a reigning house. On the night of February 13, Louvel attacked the Duc de Berry at the entrance of the opera house and plunged a knife into his heart. The Duchess was covered with her husband's blood. That night Duc de Berry died beseeching forgiveness for the man who had killed him. King Louis XVIII. himself closed the eyes of his nephew. [Sidenote: Fall of Decazes' Ministry]