JDH writes to Sir William Turner Thiselton-Dyer from Florence, about visiting [Anton] Dohrn's laboratory at Naples. He was interested in their method of rearing fish, molluscs & ascidians & impressed by the library. Dohrn gets little investment from England but is more concerned by lack of interest from the United States of America. The lab has a room for selling microscopic preparations & a popular aquarium. Lady [Hyacinth] Hooker has visited Mrs Dohrn. JDH got tired of sightseeing in Rome, he admires the Christian builders for turning material from temples into churches but thinks the original buildings were probably more impressive. He marvels at how lifelike he found bronze sculptures compared to those of marble. But the dying gladiator in marble at the Vatican is the most impressive sculpture JDH has ever seen. At the Vatican he also admired Raphael's 'Transfiguration' but in general was not impressed with the paintings & frescos of Rome. Though some of the old Roman paintings are fine, he suspects there were greater ancient Greek masterpieces in paint that have not survived. He saw some Etruscan artefacts at Cortona including painting of a muse quite unlike the Etruscan frescoes found at Orvieto, which closely resemble those of Pompeii. JDH describes his impressions of St Peter's Basilica, especially the mosaic inside the dome, which he compares to the dome of the Duomo & St Paul's in London. JDH was already familiar with the ancient arches & colosseum from the renderings of Piranesi & Panini, so they had less impact. Mentions visiting Tivoli & the crater lake at Albano. Writes of a Trappist monastery he visited in the Campania, where Eucalyptus is credited with curing fever & the land is cultivated by monks & convicts. He mentions various works being done at RBG Kew including dragging the lake, & the care of Araucaria rulei. JDH comments on the need for reform in the Linnean Society, he does not want to be the chair & Lubbock will do no harm in that role.