Tierra del Fuego and the barren coasts of Patagonia are "singularly unfavourable to the insect world". In the tropics, however, CD captured minute Coleoptera by the hundreds – which should result in his bringing home many undescribed species.

Has been working hard on collecting English and foreign birds. Yarrell has written of new birds discovered in England.

News of work in progress by Leonard Jenyns, P. J. Selby, and John Gould.

Cautions CD to beware of insects when he sends any birds’ skins – otherwise there will be only feathers, beaks, and legs remaining when he returns.

Is sending a cargo of specimens – birds’ skins, small quadrupeds, and fossil bones.

Describes his overland trip from Rio Negro to Buenos Aires and his expedition to Santa Fé.

Asks for mineralogical works to help him with the volcanic rocks of the west coast.

His troubles during the revolution have ended well.

Now plans to investigate geological formations at Rio Negro. Is concerned about the expense but cannot bear to miss seeing "one of the most curious pieces of Geology".

Sending shot or powder is illegal, but all CD’s goods and chattels have been sent. EL’s services to CD are what any Englishman should do for his country.

Mentions letters sent in parcel and those from CD received by Fox and Henslow. Adds news of family and friends.

Appreciation of his journal. She hears that CD’s "theory of the Earth" is the same as Lyell’s in 3d volume [of Principles of geology (1833)].