Sends Ernst Haeckel’s [Generelle] Morphologie [1866] and C. K. Sprengel’s book [Entdeckte Geheimniss der Natur (1793)].

A. Gaudry and L. Rütimeyer have declared in favour of CD’s views.

Expresses thanks and pleasure at what GB has said about his book [Variation] in GB’s [Presidential] Address [to the Linnean Society, 1868, Proc. Linn. Soc. Lond. (1868): lvii–c]. "What you say about Pangenesis quite satisfies me".

CD discussed "bud-variation" to show that it was an error to believe all variability is due to sexual generation.

Sends a letter (and seeds) from Fritz Müller about a strange monstrous form of Begonia found wild in Brazil. Asks GB whether it is worth communicating to Linnean Society.

CD finds GB’s address interesting; assures him that he has never said GB was wrong on any point, but that there were differences between them, which he now thinks are not great.

Comments on specific parts of the address [see 6793]: colonisation, variability of large and small genera, descent from a single parent or pair of parents, rapid multiplication and change in species, isolation.

Asks GB to support the election of CD’s nephew, Henry Parker, to the Athenaeum Club.

Thanks GB for his "Report on [the recent progress and present state of] systematic botany" [Rep. BAAS (1874): 27–54] and for the way in which he refers to CD’s book.