Presumes Smith has left for Holland from Yarmouth, Norfolk. The 'Sisymbrium murale' Smith sent is growing, shall compare the plant with the descriptions of Linnaeus, [William] Curtis, and [William] Hudson. Asks if the difference between 'Sisymbrium murale' and 'Sisymbrium murens' comes from soil and culture. Compliments Smith's translation [of Linnaeus dissertation], many have ordered copies of it. Hopes Smith will be able to revise and correct the defects in Linnaeus' system although has gained much from [Johan Anders] Murray's editions. Warns Smith against current taste of publishing numerous vapid volumes. Wishes Smith enquire in Leyden, Holland, what 'Alyssum siculum' now there is an 'Alyssum maritimum'. Asks Smith to purchase for him the works of [Hieronymus David] Gaubius [(1705-1780) German physician and chemist]. Received seeds of 'Trifolium alpestre', 'Hesperis [verna]', '[Hesperis] obovata' from Mr Dixon.