Summary

Mentions Miss Buckley’s information on roosting in trees [see Variation 1: 181 n.].

Refers to Duke [of Argyll] and his Lamarckian view of change.

Roosting habits and behaviour of pigeons in Egypt.

Criticises Herbert Spencer’s works.

Has finished Elements; comments on Laurentian stages.

Remarks on his health

and forthcoming work [Variation].

Summary

Gives details of enclosed MS on cool period. Mentions Hooker’s opposed "axis of the earth" view. Causes of glacial period are beyond CD; "cannot believe change in land and water being more than a subsidiary agent".

Summary

Discussion of Mrs Agassiz’s letter [to Mary Lyell, forwarded to CD] regarding S. American glacial action,

with comments on Bunbury’s letter on temperate plants.

Refers to opinions of Agassiz, David Forbes, Hooker, and CD on glacial period and glaciers.

Wishes he had published a long chapter on glacial period [Natural selection, pp. 535–66] written ten years ago.

Tells of death of his sister, Catherine, and other family matters.

Summary

His better opinion [of work of Boucher de Perthes].

Explains his position on CL’s treatment of species.

Mentions positive response to his ideas on the part of a German professor [Ernst Haeckel], Alphonse de Candolle, and a botanical palaeontologist [Gaston de Saporta].

Notes negative reaction of entomologists.

Mentions Falconer’s objections [to Antiquity].

Mentions work of Hooker.

Comments on paper by Owen ["On the aye-aye", Rep. BAAS 32 (1862) pt 2: 114–16]

and CD’s review of Bates’s paper [Collected papers 2: 87–92].

Thinks Natural History Review is excellent.

Summary

Belated thanks to CL for copy of Elements. Praises CL’s work. Notes especially Atlantic continents, the Weald, the Purbeck beds, glacial action, and the formation of lake-basins.

Also mentions account of Heer’s work

and CD’s disagreement with J. D. Forbes.

Suggests that CL have Murray print a two-volume edition [of the Elements].

Summary

Discusses hybridisation in cowslip and primrose.

Mentions proposed visit.

Summary

Criticises Duke of Argyll’s address [to the Royal Society of Edinburgh (1864)] and demurs on Argyll’s "new birth" theory.

Agrees with CL on beauty.

Enjoyed hearing of Princess Royal’s discussion [on Darwinism].

CD’s illness.

CL’s advice on chapter [of Variation] on dogs was excellent.

Summary

Thanks CL for Hooker’s letter.

Discussion of Hooker’s views on glacial action and temperature with specific reference to S. America.

His squabbles with Hooker on transport of seeds via water currents,

temperate plants, and preservation of tropical plants during cooler period.

Expresses interest in seeing Agassiz’s letter.

Summary

Discusses CD’s and J. D. Hooker’s letters to Lyell concerning Louis Agassiz’s theory of the glaciation of the Amazon basin in Brazil.

Summary

Discusses apple specimens received from CL; reversion to crab state. Cites passage on subject in Variation.

Comments on letter from Mr Wood on inheritance in fruit-trees.

Would like to cross flowers of "Hawthornden" with many distinct varieties.

Summary

More comments on proofs [of CL’s Principles of geology, 10th ed.]. Discusses permanence of continents and other points.

Refers to passage describing evaporation of snow in Journal [of researches, pp. 277–8].

Cites astronomers’ views on increasing length of day.

Summary

Comments on his fear that "so many heavy guns fired by great men" might influence the public and scientists.

Sends CL the Owen-inspired Wilberforce review [Q. Rev. 108 (1860): 225–64].

Mentions defence of Origin by Asa Gray at American Academy of Arts and Sciences.

Agassiz and Theophilus Parsons have poor criticisms ["Prof. Agassiz on the origin of species", Am. J. Sci. 2d ser. 30 (1860): 142–54].

Lists other negative reviews by Rudolph Wagner ["An essay on classification by Louis Agassiz", Göttingische Gelehrte Anz. (1860) pt 2: 761–800], Charles Daubeny ["Remarks on the final causes of the sexuality of plants, with particular reference to Mr Darwin’s work On the origin of species by natural selection", Rep. BAAS 30 (1860) pt 2: 109–10], and two anonymous ones (one favourable).

Huxley says K. E. von Baer "goes a long way with us".

Comments on "pipes" in chalk as evidence of geological processes still at work.

Is writing on origin of dog breeds [Variation 1: 15–43].

Summary

Comments on BAAS meeting: "our side seems to have got on very well". Asa Gray, too, is fighting nobly.

Comments on review [by Samuel Wilberforce] in the Quarterly [Rev. 108 (1860): 225–64].

Mentions a favourable review in the London Review.

Wonders if German translation [of the Origin] by Bronn has drawn attention to the subject.

The Natural History Review to be edited by Huxley and others.

Expects CL’s book [Antiquity of man (1863)] to be a bombshell.

Summary

Comments at length on CL’s book [Antiquity of man (1863)]. CD is "greatly disappointed that you have not given judgment and spoken fairly out what you think about the derivation of species".

Lists large number of queries concerning minor points.

Praises especially the chapters on language and glaciers.

Comments on the temperature of Africa during the glacial period, especially with regard to the views of Hooker.

Mentions Owen’s paper on the aye-aye [Rep. BAAS 32 (1862) pt 2: 114–16].

Summary

The coral-reef book has been invaluable [J. D. Dana, Corals and coral islands (1872); used by CD in Coral reefs, 2d ed. (1874)].

Thanks for Saturday Review.