Sends his 'Hirudo' paper for publication in "Linnean Transactions". His 'Hirudo nigra' same as the 'Hirudo complanata' in [George] Shaw's 'Hirudo viridis' paper, believes this 'H. complanata' is not the same as Linnaeus' and asks Smith to show Shaw the paper for his judgement. States that his three species are "not good 'Hirudines', if we [...] stick to the Linnaean definitions".

[Nicholas] Gwyn informed him of Smith's introduction to the King and Queen [George III (1738-1820) and Charlotte (1744-1818)], hopes it proves useful. Is collecting insects not described by Linnaeus to send to Smith. Asks if [James] Sowerby's drawing of the leeches included 'Hirudo nigra'. Requests copies of Smith's "Spicilegium" for himself, and a copy of this and Sir William Jones' "Tract on the legal method of suppressing riots" for Gwyn.