Thanks CD for a copy of his Journal of researches which is "not second in interest and instruction to any work of the kind I have ever read".

Gives CD the results of some calculations for "dip" over different distances, as requested.

Reference to W. Smellie’s Natural history [1791] requested by CD.

Would like further experimentation to confirm report about germination of wheat from Egyptian tombs. Sir G. Wilkinson may have been deceived by the Arabs.

Reports on abortive anthers in flowers of thyme sent by CD.

Hybrid geese.

Reports observations on the behaviour of captive harvest mouse and dormouse. When descending sticks mouse uses its tail like a prehensile-tailed monkey.

Regrets not seeing CD before leaving on trip [to the U. S.]. CD’s move from London will be a privation for CL.

Returns charts on coral reefs.

Discusses elevations along Holyhead Road [Anglesey].

Location of village of Bethesda [NW Wales].

Gives the height of Shrewsbury above sea-level.

Discusses the death of his son. Thanks CD for his letter of condolence and invites him to visit.

Will be happy to report on seeds sent by CD. Suggests names.

Replies to queries by CD. Describes Clipperton Rock [SW. of Mexico] and Cocos Island. Mentions possible species of Cactornis. Discusses depth of water at Bow Island [Hao, Tuamotu Archipelago], and occurrence of coral formations at various islands.

CD will be gratified to learn that RBH has recognised a species of Cactornis as a native of Bow Island [Hao, Tuamotu Archipelago].

Discusses classification of animals. Degree of affinity different for different taxonomic groups. Discusses affinity of Ornithorhynchus or Echidna to reptiles.

Brain of whale is highly developed; on differences among brains of Quadrumana.

Calls CD’s attention to an article about William Herbert’s hybrid Narcissus.

Explains what he means when he attempts a "natural classification", defining his words and using man as a standard; gives examples. Classification of Aptera and Diptera.

Discusses his discharge from the Zoological Society. Is to see Robert Brown about the British Museum position.

Much interested in CD’s communication [about W. Kemp] and seeds sent; does not know the species; has sent seeds to Henslow.

Describes a monstrous plant found near Ely.

Describes germination of seeds found in sand-pit and the geological setting of the sand-pit.

Postulates existence of ancient lake along the course of the River Tweed. Notes evidence of glaciation.