Sends his Inaugural Dissertation as requested when they saw each other in Norwich. Receives much satisfation from the specimens Smith gifted him. Sends specimen of 'Mentha gratissima' Ehrhart, believes it may be 'Mentha sylvestris' even though [Georg Franz] Hoffmann received it into his "Flora Germanicus". Publications: Smith's "Flora Britannica"; [Olof] Swartz' "Dispositio muscorum", notes that Swartz has adopted Hedwig's method "with some alterations"; and [Erik] Acharius' "Lichen descriptio".