No summary available.

Thanks for a woodcut sent by ARW for Descent.

Congratulations on his removal from London,

and praise of his review of Francis Galton ["Hereditary genius", Nature 1 (1870): 501–3]. CD agrees with every word of it.

Discusses the reasons for inserting questions on consanguineous marriages in the forthcoming Census.

Copy of Duchenne [see 7089] has not arrived; CD is concerned that it may be lost.

Finds Academy contains valuable matter for his work.

Descent progresses slowly – will not be ready for press for several months.

Has sent off specimens of Virgularia but fears they are in bad state. He could not find his dried specimens. Encloses notes that can be relied upon but may be of little use.

Also encloses a memorandum for Prof. K. G. Semper.

CD thinks Alcide d’Orbigny may have given name of Virgularia patagonica.

CD enjoyed RAvK’s recent visit [see 7164].

No summary available.

Thanks TTTT for his study of European spiders [On European spiders Part 1 (1869–70)] which bases its classification system on the theory of evolution.

Appreciation of eulogy in preface of ARW’s book [Theory of natural selection].

On amount of modification and lines of descent in determining the position in man.

Reference to StGJM’s article "On the appendicular skeleton of the primates" Phil. Trans. R. Soc. [157 (1867): 299–430],

and his [and James Murie’s] article on lemurs ["On the anatomy of Lemuroidea"] Trans. Zool. Soc. [7 (1872): 1–114].

Thanks StGJM for prompt answer correcting inaccuracies in CD’s notes on StGJM’s opinions. Expects "universal disapprobation" when he publishes Descent.

Is much obliged for information [about rabbits?].

Thanks for copies of FVH’s "Preliminary field report [of the U. S. Geological Survey] of Colorado and New Mexico" [Am. J. Sci. 49 (1870): 258–63] and Geological report [of the exploration] of the Yellowstone [and Missouri] River[s under the direction of Captain W. F. Reynolds (1869)].

Discusses flora of Sandwich Isles. "There is nothing I shd enjoy so much as to visit California, but I am growing old & my health is weak".

Thanks for HHV’s interest in the census [CD’s plan to add questions on consanguineous marriage to the census] on which CD hopes to persuade Sir J. Lubbock to speak.

Crossing experiments and self-sterility [in Eschscholzia].

Pangenesis.

Hermann Müller on insect adaptations for fertilisation of flowers.

CD working on book on man and sexual selection.

In a fortnight will begin to arrange notes on expression. Asks for FCD’s conclusions about the contraction of eye muscles. Is interested in abstract of FCD’s experiments on "rate of travelling of the nervous powers".

Encloses part of letter from Fritz Müller on Passiflora, with seeds.

Is endeavouring to have included in next census a question as to whether the parents in each household are cousins.

Comments on WP’s biographical article on CD. Asks him to thank O. F. Peschel for his present of the publication [Das Ausland 2 Apr 1870].

Expresses sympathy [on death of FCD’s daughter].

Will be grateful for his paper and letter.