[Recto is a list of Galapagos shells, by island, signed GBS. Verso is another list of shells in EF’s hand.]

Arranges to call on correspondent and bring some shells.

Asks for list of the Bahia Blanca fossil shells.

Asks for a meeting in order to go over the shells [which GBS was to describe in the appendix on Tertiary fossil shells in South America].

Cannot find two specimens of S. American fossil shells.

Suggests location of lost shell specimens.

Discusses GBS’s completion of his descriptions of fossil shells for the appendix to South America.

Note on editorial details concerning names of fossil shells [for South America, appendix]. The Latin for "Darwin" is "Darvinius".

Describes his reasoning in classifying CD’s Turritella ambulacrum specimens into two sorts. GBS holds that distinguishing characters, whether of species or varieties, should always be noticed. [See South America, appendix, pl. III, fig. 49.]

Gives his opinion on the tropical character of fossil shells listed by CD. The shells of Navidad [Chile] are not particularly tropical.