Sends two boxes of specimens and part of his "hum-drum letter-like" journal.

Congratulates WDF on his marriage,

reminisces about Cambridge and early entomology. Now neglects entomology for geology.

Describes Concepción after earthquake.

Hopes to cross Cordilleras before they leave South America in September.

The termination of the voyage has been decided – September 1836.

The earthquake of Concepción.

His geological observations (since November). Can now prove both sides of the Andes have recently risen to considerable heights.

Zoological collection.

Plans to cross the Cordilleras.

Has just returned from crossing the Cordilleras. Geological observations of formations representing great epochs of violence which broke up the earth’s crust. Shells at over 12000 feet. Silicified trees in sandstone formations at great heights. Red snow and viviparous lizards. Botanical specimens.

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.

Expresses envy for WDF’s life as a clergyman.

Outlines homeward voyage; tells of his hope of seeing active volcanoes and Tertiary strata in Galapagos. Recommends geology to Fox. Discusses Lyell’s views; CD has become "a zealous disciple".

Looks forward to seeing volcanoes in Galapagos Islands.

Has altered his views on Cordillera formations as a result of another trip. Discusses his theory of their origin and history.

Sends some geological specimens. Describes his recent trips and findings on the geology of the Andes. Asks if HSF has seen large beds of shells on elevated land – possibly at Rio Grande or S. Brazil.

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.

CD informs PPK of his impending arrival at Dunheved, Penrith; news of his journey thus far.

CD’s impressions of Sydney and of FitzRoy’s character and temperament.

His joy at prospect of journey’s end in eight months’ time.

Observations on Australia.

Reports on his collecting in Galapagos – its flora and very curious birds; its instructive geology.

Tahiti and good work of missionaries.

Finds the voyage tedious at present.

Expects that the different scientific societies will be of the greatest use to his work in London when he returns home.

Gives some impressions of Australia.

Asks JSH to propose him for Geological Society. His meeting with Sir John Herschel and Andrew Smith at Cape of Good Hope.

Beagle is again in Brazil because of need to check on "singular disagreements in the Longitudes".

Pleased by Sedgwick’s praise.

Happily home, he sends thanks to his "first Lord of the Admiralty". Will visit Maer in two or three weeks.

CD describes his happy home-coming. Finds his family and Shrewsbury unchanged.

His joy at being home. Anxious to see JSH for advice on his geological specimens.

Congratulates CW on his marriage. Waiting in London till Beagle arrives in Woolwich.

Describes recent visit to Henslow in Cambridge.

At a loss to arrange specimens and observations.