Summary

His reasons for rejecting Atlantis hypothesis connecting Madeira and Canary Islands.

Summary

Thanks for Haast’s observations. Particularly glad to get geological evidence of glacial action (in Southern Hemisphere).

Thinks Ramsay’s theory to large extent true, but thinks that in a much disturbed country some lakes would have been formed in depressions.

Summary

Bates agrees with CD on neuter ants.

Orchids.

Repeating experiment of C. F. v. Gärtner to study Huxley’s idea of physiological species.

Summary

So JDH did write the Gardeners’ Chronicle review [of Orchids]! CD guessed it from the little slap at R. Brown.

Dawson’s lecture has nothing new. Absurd to assume Greenland under water during whole of glacial period. Suggests absence of certain plants in Greenland due to seeds not surviving in sea-water. Suggests an experiment on vitality in sea-water of plants that might be in Greenland. Is more willing to admit a Norway–Greenland land connection than most other cases.

Urges JDH to warn Tyndall on his glacial theory of valleys in Switzerland.

Is working on cultivated plants.

Summary

JDH’s letter on grounds of generalisation in plant morphology.

Faunal distribution and the glacial period.

Orchid homologies.

Summary

Royal Society Council would feel bound to vote for Candolle, but privately would twenty times rather see Asa Gray elected.

Asks for title of Wollaston’s Cape Verde book [Coleoptera Hesperidum (1867)].

Supposes JDH has received his letter in answer to Gray.

Has been writing two long papers for Linnean Society [reprinted in Forms of flowers].

Summary

Abstract growing to inordinate length.

Writing in support of S. Passell as assistant at Linnean Society.

Summary

Athenæum [Owen’s?] attack on JDH [BAAS address] and CD. False statement that CD’s sole groundwork is from pigeons.

Agrees with JDH on foolishness of Red Lion Club.

Huxley’s want of judgment.

JDH’s argument about astronomy and astronomers.

Pall Mall Gazette [8 (1868): 593, 595–6] and Morning Advertiser on JDH’s address.

Summary

Praises JDH’s Australian introduction.

Disputes JDH’s emphasis on SE. and SW. Australian flora.

Summary

CD very ill.

Suspects F. Boott’s widow is illegitimate granddaughter of Erasmus Darwin.

CD, like JDH, has speculated that agrarian weeds have become adapted to cultivated ground. Suggests comparison with country of origin.

Wallace’s praise of Herbert Spencer’s Social statics baffles CD.

[Letter completed by E. A. Darwin.]

Summary

A German scholar says JDH first applied natural selection to replacement of races of men, the ruder races of Polynesians yielding to civilised Europeans. CD cannot remember reading this.

Warns JDH to take care Welwitschia does not turn into a case of barnacles and consume years instead of months.

In what months do flowers appear in Acropera loddigesia and A. luteola? CD is alarmed by John Scott’s observations on them, which differ from his own. "I am very uneasy."

Summary

CD will not write to L. Descaisne to defend his priority over C. V. Naudin.

Feels success of theory depends on acceptance and application by good and well-known workers, like JDH, Huxley, and Lyell.

Summary

HCW’s criticisms of CD’s theory.

Summary

Congratulates JDH on finishing his introductory essay [to Flora Tasmaniae].

Lyell’s position on mutability appears more positive in his letters to JDH than in those to CD. Considers JDH a convert.

Summary

Calculating small number of species in aberrant genera of insects and plants.

Joachim Barrande’s "Colonies", Élie de Beaumont’s "lines of Elevation", Forbes’s "Polarity" make CD despair, as these theories lead to conclusions opposite to CD’s from the same classes of facts.

Summary

Does not think so poorly of Nature as JDH does, by any means; fears Popular Science Review is rather ephemeral but more durable than Nature.

The case of the charlock.

Summary

Agrees that Lyell’s letters shed no new light on extensions issue. Continental extensions: opposes their being hypothesised all over world.

Commonality of alpine plants damns both extension and migration.

Summary

CD welcomes the prospect of the Philosophical Club of the Royal Society as means for seeing old acquaintances and making new ones. Will try to go up to London regularly.

Admits that the warning from JDH and Asa Gray (that more harm than good will come from combat over the species issue) makes him feel "deuced uncomfortable".

Reflects upon the complexity of Agassiz; how singular that a man of his eminence and immense knowledge "should write such wonderful stuff & bosh".

Summary

Responds to JDH’s outline history of plant geography.

Considers Humboldt the "greatest scientific traveller who ever lived".

Discusses the origin and rapid radiation of angiosperms in Cretaceous period.

Comments on importance of work of Alphonse de Candolle, Saporta, Axel Blytt.

Summary

CD preparing historical sketch, which will go into second American edition of Origin.

Asks JDH to copy out Naudin’s line on finality.