Delaying his visit to Smith in Norwich depending on whether [Dawson] Turner comes to visit him at Holkham [home of Thomas William Coke]. Lord and Lady Nugent [George Nugent-Grenville, 2nd Baron Nugent (1788-1850)] and Lord and Lady William Bentinck [Lord William Henry Cavendish-Bentinck (1774–1839), army officer and diplomatist] are leaving, and death of Mrs Anson, mother of late Lord Anson, will curtail further invitations for time being. May have his catalogue of the Holkham manuscripts finished before he leaves. His happiness at time he spent at Holkham with Smith and Lady Smith.

Sends his son's thanks for Smith's opinion on his daughter's bad back, she is being treated by Sir Henry Halford [1st baronet (1766-1844), physician] and [Thomas] Copeland [(1781-1855), surgeon]. A proposal to unite the two Linnean dining clubs is being debated after a suggested first condition the rules of the club held at the British Coffee House take precedence was rejected. Relates observations made by his son, Robert, that keeping freshly caught trout with worms causes it to putrefy, and subsequent observations made by a gentleman applying trout to the stomachs of children with and without worms, recording the same results. Has sent Smith a barrel of oysters.

Read [Thomas] Rackett's "Linnean Transactions" paper on red viper ['Observations on a Viper found in Cranborne Chace, Dorsetshire' (1819)] and recalls a memorandum he gave Sir Joseph Banks 30 years ago on how as a boy, five miles from Newbury, [Berkshire], he saw "a small serpent with a red belly" the length of slow worm bite a greyhound, which survived but had an extremely swollen neck in morning. Considered it to be a sort of slow worm and suggested the name 'Coluber chersea', the memorandum will be in Banks' loose notices.

Difficulties in communicating with Smith. Concerned to find that expressions of his in "Flora Scotia" have been misconstrued as attacks on Smith; will ensure offensive passages are expunged from second edition; apologises for and explains his wording of pages 132 and 279; praises Smith's botanical skills. Discusses differences in leaf shape of 'Salix purpurea', 'S. helix', and 'S. amygdalina'. Disagrees that economical merit should give place to scientific character in reference to 'S. caerulea', discusses authors on 'Salix' including Candolle and Sprengel.

Criticises [Samuel Frederick] Gray's "Natural Arrangements of British Plants", which seems "calculated to give the death blow to the study of natural orders, if not to botany altogether", remarks on plant names and attack on Linnaeus in preface, thinks [Richard] Salisbury has assisted with the natural orders. Refutes Salisbury's article on [Jonas] Dryander in October "Monthly Review".

Hopes Smith's work on "English Flora" in earnest; if Smith had declined it would have undertaking it himself. Return from his professorship not enough to support his family; supplementing by publishing books; proposes a "Species plantarum" in English, though concedes it would largely be a translation of Candolle, asks Smith's opinion. His intended "Exotic botany" work delayed by lack of able Scottish artists; difficulties with publisher. Thanks for duplicate specimens.

Sending dried specimens of local plants; intends to make a complete collection of the flora of Mauritius, Madagascar, and the surrounding archipelago, two botanists already engaged on it.