Robert Brown has mistreated Capt. P. P. King by holding back for nine years the plants collected on King’s voyage of the Adventure and Beagle.

CD is led to believe there are no true permanently inbreeding, sexually reproducing beings. Thanks for replies to breeding questions.

Asks for clarification of Hippeastrum crosses: is selfing or crossing with individual of same species intended and was increased fertility due to constitution of foreign parent or due to the pollen coming from another plant? Has WH known any hybrid or mongrel to revert or to vary in a manner unlikely to be effect of soil?

Sends Journal of researches.

Rejects necessity of outbreeding and any general law of reversion.

Describes further experiments with Hippeastrum showing greater fertility with foreign pollen than with individual’s own pollen or with pollen from another individual of same species.

Does not believe CD’s questions about reversion can be answered in present state of knowledge.

Returns proof sheets and requests revises. Gives his opinion of Mr Walkers’s work.

A newly-elected Fellow sends a signed obligation and subscription to CD as Secretary of the Geological Society of London.

Transmits, as on former occasions, the Smith, Elder & Co. account for the now published third number of the third part of the Zoology.

Acknowledges Journal of researches and in return sends the first volume of his History of British birds [1839–43].

Discusses details of LJ’s part of Zoology [Fish].

CD is working hard on Coral reefs.

Detailed evidence for and against geological elevation along coast of the Indian subcontinent, South Asia, and Arabia. Extensive references to geological literature about these areas.

Describes coral sand-dune and salt-marsh formation.

Acknowledges receipt of CD’s gift of the Journal of researches. Praises CD’s "ingenious" views.

Asks for details of Smyth’s Island discovered by WHS – particularly whether the islets form a ring surrounding a lagoon. [See Coral reefs, p. 158].

Gives his opinion of a MS on geology. It is not really a scientific work. It might sell well, but CD’s opinion on success of sale is worthless.

Thanks CD for his Journal of researches, "one of the best scientific travelworks of this time", which CFAH intends to translate into German.

Observations on the geology of Arabia.

Praises CD’s Journal of researches and comments on some of CD’s observations and conclusions. Considers volcanic activity and its effect on past climate and changes in climate over time. Discusses glacial phenomena. Believes the climate of the coast of Peru is modified by cold sea-currents.

Regrets he cannot accept invitation. "My health will not at present stand going out in the evenings."

Sends notes on soundings made on coral banks in the China Sea.

His recent geological observations.

Finds a difficulty with CD’s erratic block theory.

Comments on the discussion of erratic blocks in Journal of researches [pp. 619, 621–2].

Informs LJ that Yarrell has recommended B. W. Hawkins to do the plates [for Fish]. Discusses arrangements to be made, number of plates, etc. Answers LJ’s questions about several specimens.

Presents the Smith, Elder & Co. account for the fourth number now published of the second part of the Zoology.