Very pleased with IGStH’s approval [of Origin]. Will be proud to place IGStH’s Résumé des lecons sur la question de l’espèce (I. Geoffroy Saint-Hilaire 1851) alongside his other works in his library.

Grateful for his offer to look over the difficult passages in Origin for a translator.

Has interpreted the word 'honorary' quite correctly.

[Responding to HS's 1859-12-31,] JH presents additional problems in the nebular hypothesis, critiques in detail HS's views of the distribution of cometary orbits, and argues against HS's theory of sunspot formation.

Hopes readers will send information on the permanence of cross-bred plants and animals. No one doubts that cross-bred productions tend to revert in various degrees to either parent for many generations. But are there not cases of crossed breeds of sheep and pigs that breed true? CD believes occasional cross-breeding of varieties is advantageous in nature as well as under domestication. [See reply to this letter by J. O. Westwood, Gard. Chron. (1860): 122.]

CD has learned from Lyell that JDH reviewed Origin in Gardeners’ Chronicle writing in Lindley’s style.

Lyell is working on man.

Review of Origin in Gardeners’ Chronicle [31 Dec 1859].

Criticises views of J. G. Jeffreys on non-migration of shells. Cites case of Galapagos shells.

Mentions Edward Forbes’s theory of submerged continental extensions. Cites Hooker’s [introductory] essay [in Flora Tasmaniae (1860)] for evidence against any recent connection between Australia and New Zealand.

Discusses Huxley’s views of hybrid sterility.

Questions whether Étienne Geoffroy Saint-Hilaire believed in species change. Mentions views of Isidore Geoffroy Saint-Hilaire.

The distribution of cave insects.

CD’s study of man.

The problems of locating French and German translators.

Huxley’s criticism of Owen’s views on human classification.

The sale of Origin.

Is grateful for being allowed to dedicate his book to JH; also for his information on harmonics.

Miniature of William Herschel's portrait was lost and recovered. At same sale where RW bought WH's portrait, was sold 7-foot reflector, inside which were several papers in WH's handwriting. New owner would not accept £40. Does JH advise offering more?

P. T. A. Talandier wants to translate Origin into French. Talandier gave Louis Blanc as a referee. Could Mrs Cresy, who knows Blanc, find out what he thinks of Talandier?

Asks if Quatrefages has found anyone to translate Origin into French, because P. T. A. Talandier, although not a naturalist, wishes to do so.

Is grateful for his assistance and will send him a proof. Can nothing be done about a new edition of his articles on Light and Sound from the Metropolitana?

Orders J. E. Tennent’s work on Ceylon [Sir James Emerson, afterwards Tennent, Ceylon, an account of the island, physical, historical, and topographical (1859)], and Richard Owen’s Classification and distribution of Mammalia [1859].

[Responding to JH's 1860}-1-12,] HS admits some of JH's objections to HS's views on distribution of cometary orbits, but attempts to salvage HS's cyclonic theory of sunspot formation.

CD is pleased by BP’s appreciative opinion of Origin. He never intended to claim that he originated the doctrine that species have not been independently created. The only novelty in his work is the attempt to explain how species became modified and how the theory of descent explains large classes of facts. If he has taken anything from BP, he has done so unconsciously. Gives names of those he would have mentioned in any account of authors who maintained that species have not been separately created.

CD greatly admires BP’s Philosophy of creation.

To avoid possible misundertanding of his letter [2654] of that morning, CD wishes to make clear that he did not wish to imply that BP’s essay and the Vestiges of creation were in the same class. The more he thinks of it the more difficult he feels it would be to give a fair account of the authors who have maintained the modification of species. CD finds that he referred to BP’s views in the preface to his larger work [Natural selection], which was replaced by the Origin.

Please send directions to Collingwood, so RW may send miniature of William Herschel's portrait to JH.

Sending mathematical papers of his friend for JH. Is on the point of going soldiering again. Would welcome position of tutor if she hears of one going vacant.

Thanks EC for help in finding French translator [for Origin].

Gives the results of crossing experiments; some interesting and curious facts.

Sends copy of 2d ed. of Origin, with list of corrections.

Is at work on "fuller work" [Variation].