Reports on the insect specimens [collected by CD] from Australia, New Zealand, and Tierra del Fuego. Has not completed descriptions.

Has finished the Journal; is readying it for the press.

Adds family news including Caroline’s forthcoming marriage to Josiah Wedgwood III.

Has been "cramming up learning to ornament my journal with".

Sends a list of questions on his botanical specimens. Needs answers for Journal of researches, which he expects to go to press in August.

Questions about woods in cold, northern climates; about JR’s reference to frozen sandstone; about how far out from the shore the sea may become frozen.

His petition for assistance from the government is in statu quo; he is working at his Journal [of researches].

Galapagos land birds and reptiles.

No two naturalists agree on any fundamental idea [of species]. "Everything is arbitrary."

Has been with Richard Owen going over the S. American fossils.

Has worked out the non-relation between animals’ bulk and luxuriance of vegetation.

The horse once common on the Pampas. The mystery of the extinction of these animals.