Summary

CD thinks great dam across Yangma valley is a lateral glacial moraine.

Reports on Birmingham BAAS meeting.

Details of water-cure.

Barnacles becoming tedious; careful description shows slight differences constitute varieties, not species.

Lamination of gneiss.

Summary

Admires Wallace’s Island life.

Criticises: 1. His view of similar plants on distant mountains – CD prefers previous low-land connections to Wallace’s summit–summit dispersal;

2. Source of warmth for ancient Arctic climate;

3. Origin of S. Australian flora.

CD’s favourite cases in Movement in plants.

Summary

Wants to see Frank become F.R.S. before he dies.

Pities Wallace and wants a pension for him very much.

Summary

Responds, with some embarrassment, to JDH’s caution on Frank’s F.R.S. prospects.

Summary

Thanks for agreeing to propose Frank as F.R.S.

Would have enjoyed discussing Island life.

Summary

On Wallace’s pension and Frank’s F.R.S.

Summary

Letter of introduction for V. O. Kovalevsky.

Summary

Hooker’s imprisonment.

Birth of Leonard Darwin.

Barnacles will never end; on to fossils.

Summary

Island life continues to stimulate: Wallace ignores effects of glaciers on alpine flora and generally exaggerates those of débâcles and wind dispersal. CD encourages JDH to prepare a geographical address including history of geographical distribution.

Summary

CD complains of discomfort, but has not the strength for a project that would let him forget it.

Summary

Cheered by JDH’s friendly words.

Wishes he could help JDH with geographical distribution, but the subject has gone out of his mind.

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

Responds to JDH on history of plant geography.

Opinion of Humboldt.

Origin of higher phanerogams.

Importance of the occurrence of south temperate forms in the Northern Hemisphere.

Summary

No one could have thought about evolution and not about representative species; yet no one discussed it fully until Origin, including von Baer.

Did not know of Leopold von Buch’s Description physique des îles Canaries [1836] when Origin was published.

"As far as I know no one ever discussed the meaning of the relation between representative species before I did & as I suppose Wallace did in his paper before the Linn. Soc. [1858]."

Summary

Erasmus’ death and CD’s sentiments on death.

Summary

Praises JDH’s York address.

S. B. J. Skertchly has paralleled Axel Blytt’s work in Cambridgeshire fens.

JDH too cautious on southern glacial period.

Is Kew interested in Azores plants collected by Arruda Furtado, a local inhabitant and an evolutionist?

Summary

Comte [de Paris] will have plants next summer.

Arruda Furtado will send his mountain plants from Azores.

Summary

On Himalayan stratigraphy. Believes JDH’s observations of glacial action are the first ever done east of Urals.

Barnacles and the species theory; impressed with variation.

Effect of CD’s species sketch on JDH’s view of willow systematics.

Summary

Visiting his son Horace.

Studying action of carbonate of ammonia. Finds similar looking Euphorbia root cells react differently.

Intrigued by Dischidia rafflesiana, whose pitchers manufacture manure-water that nourishes adventitious roots. Does JDH know histologist for detailed study?

Julius von Wiesner’s criticism of Movement in plants "vivisects" CD in "a most courteous but awful manner" [Das Bewegungsvermögen der Pflanzen (1881)].

Summary

Profuse thanks for plants.

Specifies which euphorbs he wants. Euphorbs’ alternate rows of ammonium carbonate reactive/non-reactive cells are worth more study.