Finding little more that I could do to-day, I then called at the residence of Mr. Sloane, a descendant of Sir Hans Sloane of famous memory, who resides in the Bontrouline palace, and not finding him at home left a note of introduction written by two ladies, Mrs. Boott and Miss Boott, and also a letter intrusted to my care by Mirbel. I called also at the Botanic Garden, but Mr. Targioni-Tozzetti[95] was not at home, and the garden was of no great consequence. While at dinner Mr. Sloane called to welcome me to Florence, and to take me out of the city to the Campagna,--lawns and beautiful pleasure-grounds and groves skirting the Arno for a mile or two, which are thrown open to the public, forming the favorite drive or promenade. Almost the whole city was there, and I never saw a more pleasant place. The roads were thronged with carriages, from the barouche of the grand duke to the peasant’s cart, all on terms of perfect equality. The grand duke passed us twice. He mingles much with the people, is accessible to all, and is greatly beloved. The government, though despotic, is paternal, the people are not burdened with taxes, and are contented and industrious. The difference between Tuscany and the Papal States is manifest enough. But I must hasten with my narrative. Early the next morning, Friday, I called on Mr. Sloane, looked at his garden, where he has many fine things. We then crossed the Arno to the other side of the town, called on Professor Amici,[96] who removed here from Modena a few years since, and has charge of the grand duke’s observatory. He was very obliging, showed me his microscopes, which he thinks unrivaled, but I don’t, and then the observatory, where I saw all the instruments, peeped through his telescope, and from the top of the tower had a most beautiful panoramic view of Florence and the surrounding country. We then passed through the museum of natural history, which is in the same building, and is prettily arranged; saw the famous flowers and fruits done in wax, but not the figures which represent the Plague, which were in the anatomical museum adjoining, and which I did not care to see. In the collection were some recent models made under Amici’s superintendence to illustrate his discoveries, etc. They were wonderfully fine, and would be useful in a class-room. Amici is a good observer with the microscope, but his anatomical or physiological notions are in some cases very wide of the mark, and quite surprised me. On leaving, Mr. Sloane and myself separated, he going to fulfill some engagement, and I to the Palazzo Pitti, as it is still called from the founder, though it early passed into the hands of the Medici family, who finished it, and now it is the ducal residence. I must tell you, by the way, that I should have seen a remarkable person in Florence, had she not been sick. Sloane is very intimate with her and wished me to see her; she is the ex-queen of Naples, the widow of Murat and the sister of Napoleon....