Thanks for Roscoe's letter of 1 March. Critiques in detail Roscoe's paper on Scitamineae plants; believes it will do Roscoe "great honour" as a botanist he is the first to give a "plausible account" of these genera; a point that could have been alluded to; corrections of punctuation, quotations, spelling, and words for characteristics; asks whether 'Roscoia' is to remain in 'Amomum'.

[Richard] Salisbury has published a "most abusive & lying pamphlet" against "English Botany" ["Generic characters in the English Botany"], which he has ignored, along with two letters received since his last conclusive one. No one is paying Salisbury any attention and are anxious for Smith to keep his silence. Composed new introductory letter for Royal Institution, refuting Salisbury and not honouring him with apparent notice. Transcribes a mocking "motto" for [Salisbury] and [William] Hooker's [(1779-1832), botanical artist] "Paradisus [Londinensis]".