Summary

EB has had his pension disallowed; is coming to England.

Summary

Discusses his new microscope.

Summary

Performed a large number of Lythrum crosses before leaving home.

Working on Drosera for amusement. Has tried effect on plants of vegetable substances active on animal nervous systems, e.g., opium; makes Drosera inactive for hours.

Summary

Son [Leonard] ill with scarlet fever. Also Mrs Darwin.

Intends to give up work on Drosera until Variation is done.

Summary

Encloses MS on observations and experiments on Drosera. JDH’s opinion will help him decide whether to pursue subject in some future year.

Summary

Walter White [Asst.-Sec. and Librarian, Royal Society] has introduced EC to Richard Kippist of the Linnean Society, who has made little progress toward accepting Origin.

Summary

Thanks for opinion on Drosera. After working for a time on a subject he is absolutely incapable of judging its value.

Has found a case in Lythrum of a necessary triple alliance between three hermaphrodites; the strangest case of propagation recorded among plants or animals.

Asks for L. thymifolia to see how a trimorphic form passes or graduates into dimorphic.

Questions JDH on Linum perenne.

Has found 33 hybrids in one field between Verbascum thapsus and V. lychnitis. The perfect series of varieties would have justified running the species together, but every one of the intermediate forms is sterile.

Summary

Masdevallia turns out to be nothing wonderful, "I was merely stupid about it."

Asks for plants for experiments.

Hedysarum and Oxalis sensitiva seeds.

Asks whether Oliver knows of experiments on absorption of poisons by roots.

CD finds he cannot publish this year on Lythrum salicaria; he must make 126 additional crosses!

Asks for odd variations of common potato; he wants to grow a few plants of every variety.

Variation is crawling.

Has had some bad attacks lately.

Summary

Lythrum salicaria is coming out clear.

Would be glad of Nesaea seed.

Is disappointed with Melastoma, but is sure there is something curious to be made out.

His experiments with poisons on Drosera lead him to conclude that it possesses something analogous to nervous matter.

Comments on natural hybrids of Verbascum.

Deplores the Civil War and the feelings it has fostered in Britain.

Summary

Criticises style of JS’s fern paper [Edinburgh New Philos. J. 2d ser. 16 (1862): 209–27].

JS’s remark on "the two sexes counteracting variability in the product of the one" is new to CD.

Does the female [fern?] plant always produce female by parthenogenesis?

They seem to work on same subjects; CD has much material on Drosera.

Does not understand JS’s objections to natural selection.

Offers to suggest experiments.

Summary

Account of Orchids.

Summary

Glad to receive CD’s pat on back for address.

Wants to know what CD thinks of the argument on geological contemporaneity.

On his poor health.

Summary

Still working on book and has completed 620 out of 700 pages.

Rewrote memoir [on mimicry in Amazon Lepidoptera] for Trans. Linn. Soc. Lond. [23 (1862): 495–566].

Edwin Brown, HWB’s earliest naturalist friend, will have a hard time classifying Carabi as he is unable to travel.

Summary

Nearly agrees on contemporaneity, but THH pushes his ideas too far. Would require strong evidence before believing that the so-called Silurian, Devonian, and Carboniferous strata could be contemporaneous. Thinks THH’s case on advancement of organisation is strong. But he should read Bronn, before publishing again, and say more on other side. Cannot help hoping he is not as right as he seems to be.

Summary

Thanks for Dawson’s letter. Doubts his evidence that climate of land was not glacial when upheaved after submergence.

Encloses memorandum of questions for C. V. Naudin.

Expression of the emotions.

Is building a hothouse for plant experimenting.

JDH’s ideas on America are more atrocious than his. What a new idea that struggle for existence is necessary to try to purge a government! Probably true. Slavery draws him one way one day, another the next. Yankees are "detestable toward us". Tocqueville.

Summary

Just finished HWB’s paper ["Contributions to an insect fauna of the Amazon valley", Trans. Linn. Soc. Lond. 23 (1862): 495–566], one of the most remarkable he has ever read. Found mimetic cases and connection of facts marvellous. Finds equally important the facts on variation and segregation of complete and semi-complete species. Questions whether insect mimicry is not due to small size and defencelessness. Criticises title of paper. Mentions that Wallace will appreciate it.

Summary

Forwards carbonate of ammonia and gelatine free of chlorine.

Summary

Thanks for Aldrovanda reference and Cassia.

Has wasted labour on Melastomataceae without getting a glimpse of the meaning of the parts.

Wants seeds, from their native land, of Heterocentron or Monochaetum.

Is beginning to change his view about rarity of natural hybrids.

Summary

Observations on Welwitschia.

Summary

Sends CD West Ireland soundings.

More detail on his review "a la Lindley" [see 3797].

Bates’s paper ["Contributions to an insect fauna of the Amazon valley", Trans. Linn. Soc. Lond. 23 (1862): 495–566] is capital.

Andrew Murray’s article plays into CD’s hands through sheer ignorance.

JDH is on Royal Society Council.

Has no recollection of applying natural selection to Polynesians. None but a German would dig out such a passage if it exists [see 3812].

Has caused Tyndall to modify his pseudo-geology.

Has not seen Duke of Argyll’s review [Edinburgh Rev. 116 (1862): 378–97]. [The Duke] did not understand Orchids the least little bit, nor the Origin, when JDH saw him.