Asks if the 'Fucus fastigiatus' of the Linnaean herbarium has any fruit on it as described in "Linnean Transactions" vol 3 p200, and if so requests smallest sample possible in order to draw it under microscope; he has made some important discoveries respecting fructification in this species and its affinities.

Requests to become a subscriber of "Flora Graeca". Does not wish the remaning volume of "Flora Anglica" ["Flora Britannica"?] to come out until the modern cryptogamists are more advanced. Has much to add to the physiology of 'Fucus' from parcels of winter specimens in fruit sent from Cornwall, Bognor, [Sussex], and the Isle of Wight.

Has sent letterpress of his third fasciculus [probably "Nereis Britannica"] to [Dawson] Turner for Smith's opinion. Hopes Smith received specimen of 'Lichen vulpinus'; observations. Encloses specimens of 'Byssus fulva', observations; drawings of 'B velutina v aurea', observations. Sent specimen of 'Auricularia papyrina' to Turner; observations.

[Spec 25 written in pencil at head of verso of first folio]