Believes the specimens of [William] Hudson's 'Mentha villosa' he received from [Samuel] Goodenough are 'Mentha sylvestris', confirmed by Linnaeus and Ray in "Historiae plantarum"; further observations on it. Received 'Mentha sativa' from Bath from Goodenough, who believes Pitchford's garden 'M. satvia' is 'M. gentilis'. Confusion over figures of 'M. sylvestris' and other 'Mentha' species in "the old authors" Hudson, [John] Gerard [(1545-1612)], [John] Ray, and [John] Parkinson [(1567-1650)]. Has thirteen customers for [James] Sowerby's work [presumably "English Botany"], and one for [James] Dickson's "Plan[tarum] Crypt[ogamicarum]". Dickson sent him '[Acrostichum] ilvense', thinks it different from the Swedish specimen. Will consult [William] Sole on 'Mentha'. Received 'Sium repens' from Dr Randolph of Oxford, found by [John] Sibthorp, new to England, asks if it is also a new Linnaean one.