Brief summary of the voyage so far. His delight in the Brazilian forest; his trip into the interior; the turbulence at Rio; has grown a beard.

During the past two months CD has been lucky with fossil bones, and he is also finding new specimens of living animals.

He describes an ostrich hunt.

Has received several letters from home.

He enjoys Buenos Aires and admires the señoritas. Tierra del Fuego is next.

Account of the four-month voyage to Tierra del Fuego, Cape Horn, and return. The Fuegians are landed with Richard Matthews [the missionary in charge of them]. Storms, seasickness, hostile savages, and scenery are described. His increasing interest in all branches of natural history makes the hardships worth while. FitzRoy buys a schooner. CD will stay at Rio Negro while it is fitted.

Longs to be on the other side of the Horn; tired of these countries. Natural history makes him continue. He now knows it will remain his favourite pursuit for the rest of his life.

Comments on slavery.

Will have additional space on board and a servant [Syms Covington] who will help him with the collection of birds and quadrupeds.

Asks for books, a lens, and four pairs of shoes.

With the help of General Rosas, CD has just finished an overland journey from Patagones to Buenos Aires; he tells of fossil finds at Bahia Blanca and Guardia del Monte. Spring reminds him of home.

Describes his trip to north of Santa Fé, his illness, and return by boat to Buenos Aires – which he found in the throes of a revolution. Covington is cut off from the town, which some expect to be plundered.

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".

Has had to draw bills totalling £217 in seven months.

Is glad the Captain has decided to winter in Tierra del Fuego, because this will facilitate "glorious excursions" into the Andes.

Has obtained fragments of fossil bones and part of a Megatherium head.

Their long delay occurred because the charts were not complete for sending home.

CD is now on shore because of seasickness.

The family may not hear from him for a year.

Describes Patagonia and its inhabitants.

Writes of his pleasure in geology.

Predicts that Falklands will become an "important halting place". Outlines Beagle’s future itinerary.

In the past six months he has done much geology and natural history. His geological pursuits are a source of high pleasure. Has lately determined to work chiefly on corals.

Spent three weeks going up the Santa Cruz with a party; they ran out of provisions 20 miles from the Cordilleras. Winter at present prevents his doing much natural history.

Thanks for her letter of March, which gave him his first explanation of the interest in the [Megatherium] head he had sent.

Wants E. A. Darwin to tell William Clift not to remove numbers or markers on any specimens. The British Museum has first claim on any of his specimens; CD cannot at present say where any should go.

Recounts his trip [from Valparaiso] to Santiago. His meeting with Claude Gay, Thomas Sutcliffe, and others. Geology of tour uninteresting.

Became ill two weeks before on his return from Santiago after an interesting trip and some geology – though snow kept him out of the Andes. FitzRoy has had to sell the schooner; he was discouraged by the Admiralty, and the expense was too much for him to bear personally.

CD has recovered from his illness.

Fatigue and depression had almost decided Captain FitzRoy to turn over his command, but he was dissuaded.

Beagle will now go no further south than Cape Tres Montes and will finish survey in five months.

CD experiences his first earthquake.

Definite plans now to leave Valparaiso 1 June and to arrive in Sydney in January; then Cape of Good Hope and home in September 1836.

Describes Concepción after earthquake.

Will cross the Cordilleras. Hopes snow will hold off.

His trip across the Andes and back was his most successful excursion: can clearly demonstate that the western part of the double line of mountains is much older, with fossil shells at 12000ft; the eastern line may be as modern as the Patagonian plains. If proved, this is an important fact in the theory of the formation of the world. Has found petrified trees.

Slow and tedious trip through miserable country, but geology prospers, and CD will have a good general idea of the structure of Chile by the time he leaves the country. Will send a last large cargo of specimens to Henslow.

Describes his trip from Coquimbo to Copiapò, where he rejoined the Beagle – a hard and wearisome journey, but geologically interesting.

FitzRoy piloted the [Blonde] to rescue crew of wrecked Challenger.

CD has received letters that were missing, and others; for ten months there will be none to or from him.

Memorandum of geological instructions to guide ABU during a voyage of [Constitucion] to survey the coast of Peru.

Living quietly on the ship and eating good food has been good for him. He longs for home. Peru is in a miserable state.