Has just returned from a month long visit to Hastings, Sussex, where he saw the India, Jamaica, and Oporto fleets and collected marine plants. Fishermen brought a blue shark, 'Squalus glaucus', to shore, and as [Thomas] Pennant had only briefly spoken of the species decided to make a full description of it, and had an outline drawing of it made; proposes it for a paper [published as 'A Description of the Porbeagle Shark']. Has a specimen of 'Asplenium marinum' for Linnean Society herbarium. Found two new 'Ulvae' at Hastings. Asks the progress of printing of his paper on 'Carex'; wishes [John] Sibthorp could see it before he finishes his "Flora Oxoniensis". Baroness [Henriette Charlotte von] Itzenplitz has giving birth to a son at Kew.

On reverse of letter note "do get my vol. of Phil. Transactions" and a column of amounts of money.