Has not received the plants Smith mentioned in his last letter. Has sent the requested 'Lichen' specimens, did not want to send them before completing his "Lichenographia universalis", now printing; collection now contains almost 900 specimens, will send more as occasion arises. [Heinrich] Schrader thinks the new lichen work "definitive". Also enclosing letter and parcel for Dawson Turner.

Friendly criticism of Smith's book; wonders whether he relied too much on [Erasmus] Darwin who was "too poetical to be correct" and [William] Forsyth who was "too cunning" to be quite so pure as Smith supposes him. Pleased to hear that the second fasiculum of "Flora Graeca" is to be printed soon. Genus 'Silene' has always been obscure and remarks on this subject will be welcome.