Altogether the Piazza and its vicinity is the French _quartier_ of Rome. At seven o'clock every evening, the detachments who are to be on guard, during the night, at the different military posts, are drawn up in front of the said building, receive the pass-word, and then, headed by the drums and fifes, march off to their respective stations. Every Sunday and Thursday evening too, at this hour, the French band plays for a short time in the Piazza. Generally, this ceremony passes off in perfect quiet, and in truth attracts as little attention from bystanders as our file of guardsmen passing on their daily round from Charing Cross to the Tower. On Sunday evening last, a considerable crowd, numbering, as far as I can learn, some two or three thousand persons, chiefly men and boys, assembled round the band, and as the patrols marched off down the Corso, and towards the Castle of Saint Angelo, followed them with shouts of "Viva l'Italia," "Viva Napoleone," and, most ominous of all, "Viva Cavour." As soon as the patrols had passed the crowd dispersed, and there was, apparently, an end of the matter. The next night poured with rain, with such a rain as only Rome can supply; and yet, in spite of the rain, a good number of people collected to see the guard march off, and again a few seditious or patriotic cries (the two terms are here synonymous) were heard. Such things in Italy, and in Rome especially, are matters of grave importance, and the Government was evidently alarmed. Contrary to general expectation, and I suspect to the hopes of the clerical party, the French general has issued no notice, as he did last year, forbidding these demonstrations. However, the patrols have been much increased, and great numbers of the Pontifical gendarmes have been brought into the city. On Tuesday night the Papal police made several arrests, and a report was spread by the priests that the French troops had orders to fire at once, if any attempt was made to create disturbance. On the same night, too, there was a demonstration at the Apollo. I have heard, from several quarters, that on some of the Pontifical soldiers entering the house, the whole audience left the theatre, with very few exceptions. However, in this city one gets to have a cordial sympathy with the unbelieving Thomas, and not having been present at the theatre myself, I cannot endorse the story.