I have seen, at the Theatre of San Carlo, the _Don Giovanni_ of Mozart; but certainly, after being accustomed to the extreme vivacity of Rossini's style, the music, even of the divine Mozart, appears to go off heavily. There is too much of what the French call _musique de fanfares_ in the opera of _Don Giovanni_ and I believe most of the Italians are of my way of thinking. We have just heard of the death of the poor Princess Charlotte. I am no great admirer of Kings and Queens; and yet I must own, I could not help feeling regret for the death of this princess. I had formed a very high opinion of her, from many traits in her character; and I fancied and hoped that she was destined to redeem England from the degradation and bad odour into which she had been plunged by the borough-mongers and bureaucrats, engendered by the Pitt system. She had liberal ideas and an independent spirit. I really almost caught myself shedding tears at this event, and had she been buried here, I should have gone to scatter flowers upon her tomb: His saltem accumulem donis, et fungar inani Munere.[108] Has no royalist or ministerial poet been found to do hommage to her _manes_? Had she lived to be Queen of England she would have found a thousand venal pens to give her every virtue under heaven. There is a professor of natural philosophy now at Naples, of the name of Amici, from Modena, who has invented a microscope of immense power. The circulation of the blood in the thigh of a frog (the coldest animal in nature), when viewed thro' this microscope, appears to take place with the rapidity of a Swiss torrent. Since I have been here, I have once more ascended Vesuvius; there was no eruption at all this time, but I witnessed the sight of a stream of red-hot liquid lava flowing slowly down the flank of the mountain. It was about two and a half feet broad.