Summary

Has been consulting with Mrs Lyell about the possibility of publishing Lyell’s letters. Asks CD’s opinion on the matter.

Summary

CD and Frank think they have proved that function of plant sleep is to protect leaves from injury by chilling radiation. Requests plants for experiment to determine whether underside of leaf is hardier than upper.

Summary

Studying geotropism.

Experiments using exposure to frost to study nyctitropism are difficult to perform because species vary in frost tolerance.

Summary

JDH’s scheme for lowering F.R.S. fees by creating a fund through membership subscription.

Summary

Though correspondence has never ebbed so low, CD is constantly in his thoughts.

Observations on cheetahs used as domesticated hunting animals.

Finds geographical barriers sometimes separate species, but also finds species that remain separate where there are no barriers to migration.

Colour "individuates" isolated animal species.

Plains and alpine animal distribution show altitude not strictly analogous to latitude.

Impact of timber cutting on climate has led to extinction of crocodiles.

Will discuss coal formation in letter to Edward Forbes.

CD often asked whether isolated mountains in southern latitudes had closely allied representatives of Arctic and north temperate plants; JDH has found a representative barberry.

Making for Darjeeling via Calcutta.

Summary

JDH may put CD’s name down for £200 for the proposed fund.

Does JDH have a plant of Porlieria hygrometrica he could lend to CD?

Summary

JDH details the subscription fund’s finances.

Has finished lecture for Royal Society on N. American plant distribution.

Summary

CD contributes £200 to JDH’s Royal Society fund.

Summary

Burdened with Anniversary Address to the Royal Society.

Quips that even Huxley is running out of speeches.

Summary

Wants Oxalis specimen named; is fascinated by cotyledonary movements of the genus.

Summary

Frank asked to summarise work with CD for use in JDH’s Royal Society address.

Work with A. Gray shows Colorado plants closer to Altai than to E. or W. America.

Work with J. Ball shows Moroccan plants very distinct from nearby Canaries.

JDH on Royal Commission to Paris Exhibition.

Summary

Before JDH discusses flora of Canary Islands CD suggests he read F. B. White’s paper [see 11707], which explains stocking of Atlantic island fauna as due to changed currents during [last, or Miocene] northern glacial period.

Summary

Botanical evidence is against F. B. White’s origin of St Helena fauna. JDH holds flora is S. African. Since plants must arrive before insects, if fauna is Palearctic then flora survived glacial period. Flora not Miocene since old and relic orders are absent. Suggests S. African west coastal mountains as insects’ origin.

Summary

Confident of species theory as result of applying it to cirripede sexual systems.

CD’s opinion of E. Blyth. JDH should meet Blyth, inquire about domesticated varieties, study insular flora, solve coal-plant problem.

Summary

Thanks for JDH’s description of CD’s work in Nature.

Anthony Rich to bequeath his property (over £1100 a year) to CD.

Summary

Congratulates CD on the Anthony Rich bequest.

Sad but relieved to retire as President of the Royal Society.

Describes battle with Treasury over use of an empty house at Kew.

Summary

Waiting for frost to go so experiments can start again.

Summary

Brian Hodgson reading CD’s Journal of researches with delight.

Forwarding breeding pamphlets.

JDH recommends P. S. Pallas on degeneration.

CD’s facts on sex in barnacles startling.

Hugh Falconer’s health.

Summary

Urges Frank to reconsider his refusal of Cambridge Examinership.

Summary

Frank’s reasons for not accepting the Cambridge Examinership.