Sends copy of [Lewis David de] Schweinitz and [Johann Baptist von] Albertini's "Fungi Niskienses". Explains the genesis of the work; well received in Europe and by Persoon.

He was not mistaken in his ideas respecting the horn of the rhinoceros, having observed the living specimen at Exeter Change, which is larger than Mr B's specimen but has a much shorter horn; concludes that the horn on Mr B's is from another species. Sending specimen of 'Acontium napellus' found near Cheltenham, [Gloucestershire], has also found it near Carlisle, [Cumberland]. considers it a British species.

Will explain his reasons for opposing Mr Bullock when he next sees Smith.

["Spec 15" written in pencil top of verso of first folio]