Working with London College of Physicians revising their Pharmacopoeia, queries botanical names with Smith: discusses different specimens of 'Melaleuca leucadendra' sent by Christopher Smith [(d 1807) East India Company botanist], from one of which cajeput oil is obtained; whether officinal juice is obtained from 'Aconitum napellus' or 'Aconitum neomontanum' of [Carl Ludwig] Willdenow; whether Smith has given a trivial name to the 'Alpinia' which yields cardamom; unsure whether the fruit of 'Laurus nobilis' is a bacca or drupa; and terminology for describing hops. Smith has annotated brief responses to each query.