On the 7th of August, the very day after the battle of Worth, while MacMahon was retreating before the victorious army of the Prussian Crown Prince, the Parisians were made victims of an extraordinary deception. A great battle was reported, in which the Crown Prince had been made prisoner, together with twenty-six thousand of his men. All Paris turned into the streets to exult over this victory; everyone rushed in the direction of the Bourse, where details of the great victory were said to have been posted. In every street, from every house, people were summoned to hang out flags and banners. An excited crowd filled up the Bourse, many men clinging to the railings, all shouting, singing, and embracing each other. No one for a long time had any clear idea what the rejoicing was about, yet the crowd went on shouting and singing choruses, waving hats, and reiterating the "Marseillaise." The carriage of Madame Marie Sasse, the prima donna, who was on her way to a rehearsal at the Grand Opera House, was stopped, and she was requested to sing the "Marseillaise." She stood up on the seat of her carriage and complied at once. "There was profound silence," wrote a gentleman who was in the crowd, "when she gave the first notes of the 'Marseillaise;' but all Paris seemed to take up the chorus after each stanza. There was uproarious applause. The last verse was even more moving than when Faure had sung it, on account of the novelty of the surroundings and the spontaneous feeling of the people. There were real tears in the singer's eyes, and her voice trembled with genuine emotion as she came to the thrilling appeal to _Liberté_." At the same moment Capoul also was singing the "Marseillaise" in another street, and in the Rue Richelieu the mob, having stopped a beer cart and borrowed some glasses from a restaurant, were drinking healths to the army and the emperor. "All this time," says the American, who mingled in the crowd and shouted with the rest in his excitement, "it never occurred to me to doubt the accuracy of the news that had so stirred up Paris; for the newspapers on the preceding days had prepared us to expect something of the kind. All at once, upon the Boulevard, I was aware of a violent altercation going on between a respectable-looking man and a number of infuriated bystanders. He seemed to be insisting that the whole story of the victory was untrue, and that despatches had been received announcing heavy disasters. I saw that unlucky citizen hustled about, and finally collared and led off by a policeman, the people pursuing him with cries of 'Prussian!' But some time later in the day some persons in a cab drove down the Boulevards with a white banner, inscribed: THE AUTHOR OF THE FALSE NEWS IS ARRESTED! This, however, was not the case, for the news was never traced to any person."